{"id":7282,"date":"2026-09-08T19:03:14","date_gmt":"2026-09-08T18:03:14","guid":{"rendered":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/"},"modified":"2026-09-09T08:04:15","modified_gmt":"2026-09-09T07:04:15","slug":"3-3-4-alkenes","status":"publish","type":"page","link":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/","title":{"rendered":"3.3.4 Alkenes"},"content":{"rendered":"\n<div class=\"ols-aqa334-page\">\n\n  <aside class=\"ols-sidebar\">\n  <div class=\"ols-sidebar-header\">\n    <h3>Revision Notes<\/h3>\n    <p>AQA A Level Chemistry<\/p>\n  <\/div>\n\n  <div class=\"ols-topic-group\">\n    <h4>3.3.4 Alkenes<\/h4>\n\n    <ul class=\"ols-topic-list\">\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/alkene-bonding\/\">Alkene Bonding<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/geometric-isomerism\/\">E-Z Isomerism<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/electrophilic-addition-mechanism\/\">Electrophilic Addition Mechanism<\/a><\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/reactions-of-alkenes\/\">Reactions of Alkenes<\/a>\n        <ul class=\"ols-subtopic-list\">\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/reactions-of-alkenes\/halogens\/\">Halogens<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/reactions-of-alkenes\/hydrogen-halide\/\">Hydrogen Halide<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/reactions-of-alkenes\/sulfuric-acid\/\">Sulfuric Acid<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/reactions-of-alkenes\/bromine-water\/\">Bromine Water<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/reactions-of-alkenes\/steam\/\">Steam<\/a><\/li>\n        <\/ul>\n      <\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/polymerisation-reactions\/\">Addition Polymers<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/polymer-properties-and-pvc\/\">Polymer Properties and PVC<\/a><\/li>\n    <\/ul>\n  <\/div>\n\n  <div class=\"ols-topic-group\">\n    <h4>Other AQA Sections<\/h4>\n    <ul class=\"ols-topic-list\">\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-1-introduction-to-organic-chemistry\/\">3.3.1 Introduction to Organic Chemistry<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-2-alkanes\/\">3.3.2 Alkanes<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-1-atomicstructure\/\">3.1.1 Atomic Structure<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-2-amount-of-substance\/\">3.1.2 Amount of Substance<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-1-3-bonding\/\">3.1.3 Bonding<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-2-1-periodicity\/\">3.2.1 Periodicity<\/a><\/li>\n    <\/ul>\n  <\/div>\n<\/aside>\n<script>\r\n(function() {\r\n  function normalisePath(path) {\r\n    return String(path || '')\r\n      .split('?')[0]\r\n      .split('#')[0]\r\n      .replace(\/\\\/+$\/, '')\r\n      .toLowerCase();\r\n  }\r\n\r\n  function highlightActive() {\r\n    var sidebar = document.querySelector('.ols-sidebar');\r\n    if (!sidebar) return false;\r\n\r\n    var currentPath = normalisePath(window.location.pathname);\r\n    var links = sidebar.querySelectorAll('a[href]');\r\n    var matched = null;\r\n    var matchedLength = 0;\r\n\r\n    sidebar.querySelectorAll('.active, .active-main, .parent-active').forEach(function(item) {\r\n      item.classList.remove('active', 'active-main', 'parent-active');\r\n    });\r\n\r\n    sidebar.querySelectorAll('a[data-ols-disabled-parent=\"1\"], a[aria-current]').forEach(function(a) {\r\n      a.removeAttribute('aria-current');\r\n      a.removeAttribute('tabindex');\r\n      a.removeAttribute('data-ols-disabled-parent');\r\n    });\r\n\r\n    links.forEach(function(a) {\r\n      try {\r\n        var href = a.getAttribute('href');\r\n        if (!href || href === '#' || href.charAt(0) === '#') return;\r\n        var linkPath = normalisePath(new URL(href, window.location.origin).pathname);\r\n        if (!linkPath) return;\r\n        if (currentPath === linkPath || currentPath.indexOf(linkPath + '\/') === 0) {\r\n          if (linkPath.length > matchedLength) {\r\n            matched = a;\r\n            matchedLength = linkPath.length;\r\n          }\r\n        }\r\n      } catch(e) {}\r\n    });\r\n\r\n    if (matched) {\r\n      var matchedLi = matched.closest('li');\r\n      var parentSub = matched.closest('.ols-subtopic-list');\r\n\r\n      if (parentSub) {\r\n        if (matchedLi) {\r\n          matchedLi.classList.add('active');\r\n          matched.setAttribute('aria-current', 'page');\r\n        }\r\n\r\n        var parentLi = parentSub.closest('li');\r\n        while (parentLi) {\r\n          parentLi.classList.add('parent-active', 'active-main');\r\n\r\n          var parentLink = parentLi.querySelector(':scope > a');\r\n          if (parentLink) {\r\n            parentLink.setAttribute('aria-current', 'true');\r\n            parentLink.setAttribute('tabindex', '-1');\r\n            parentLink.setAttribute('data-ols-disabled-parent', '1');\r\n          }\r\n\r\n          var higherSub = parentLi.parentElement.closest('.ols-subtopic-list');\r\n          parentLi = higherSub ? higherSub.closest('li') : null;\r\n        }\r\n      } else {\r\n        if (matchedLi) {\r\n          matchedLi.classList.add('parent-active', 'active-main');\r\n          matched.setAttribute('aria-current', 'page');\r\n          matched.setAttribute('tabindex', '-1');\r\n          matched.setAttribute('data-ols-disabled-parent', '1');\r\n        }\r\n      }\r\n    }\r\n\r\n    return true;\r\n  }\r\n\r\n  if (!highlightActive()) {\r\n    document.addEventListener('DOMContentLoaded', highlightActive);\r\n  }\r\n})();\r\n<\/script>\n\n  <style>\n    @import url('https:\/\/fonts.googleapis.com\/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');\n\n    .ols-aqa334-page,\n    .ols-aqa334-page * { box-sizing: border-box; }\n\n    .ols-aqa334-page {\n      --ols-purple: #3b0764;\n      --ols-purple-2: #581c87;\n      --ols-accent: #a855f7;\n      --ols-soft-purple: #f5f0ff;\n      --ols-soft-cream: #fbf7f2;\n      --ols-border: rgba(59, 7, 100, 0.13);\n      --ols-shadow-soft: 0 10px 28px rgba(59, 7, 100, 0.09);\n      --ols-muted: #5c5268;\n      font-family: \"Poppins\", Arial, sans-serif;\n      color: var(--ols-purple);\n      background: #ffffff;\n    }\n\n    .ols-aqa334-page a { color: inherit; text-decoration: none; }\n    .ols-aqa334-container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }\n\n    .ols-aqa334-breadcrumb-bar { padding: 16px 0 0; }\n    .ols-aqa334-breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--ols-muted); font-weight: 500; }\n    .ols-aqa334-breadcrumb a { color: var(--ols-muted); transition: color 0.2s ease; }\n    .ols-aqa334-breadcrumb a:hover { color: var(--ols-accent); }\n    .ols-aqa334-breadcrumb span { color: var(--ols-purple); font-weight: 700; }\n\n    .ols-aqa334-intro {\n      padding: 36px 0 72px;\n      background:\n        radial-gradient(circle at top center, rgba(168, 85, 247, 0.08), transparent 40%),\n        linear-gradient(180deg, #fbf7f2 0%, #ffffff 100%);\n    }\n    .ols-aqa334-intro-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }\n    .ols-aqa334-eyebrow {\n      display: inline-flex; align-items: center; gap: 9px; padding: 8px 16px; border-radius: 999px;\n      background: #ffffff; border: 1px solid rgba(168, 85, 247, 0.22); color: var(--ols-accent);\n      font-size: 13px; font-weight: 600; box-shadow: 0 6px 18px rgba(59, 7, 100, 0.06); margin-bottom: 20px;\n    }\n    .ols-aqa334-eyebrow::before { content: \"\"; width: 7px; height: 7px; border-radius: 50%; background: var(--ols-accent); box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.14); }\n    .ols-aqa334-intro h1 { font-size: clamp(34px, 4.5vw, 64px); font-weight: 800; color: var(--ols-purple); letter-spacing: -0.045em; line-height: 1.08; margin: 0 0 10px; text-shadow: -9px 0 9px rgba(59, 7, 100, 0.08); }\n    .ols-aqa334-accent-bar { width: 72px; height: 4px; background: var(--ols-accent); border-radius: 999px; margin: 0 0 22px; }\n    .ols-aqa334-intro-lead { font-size: clamp(16px, 1.6vw, 19px); font-weight: 300; color: #32104f; line-height: 1.72; margin: 0; }\n\n    .ols-aqa334-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }\n    .ols-aqa334-info-card { background: #ffffff; border: 1px solid var(--ols-border); border-radius: 20px; padding: 20px 22px; box-shadow: var(--ols-shadow-soft); }\n    .ols-aqa334-info-card-label { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ols-muted); margin-bottom: 6px; }\n    .ols-aqa334-info-card-value { font-size: 22px; font-weight: 800; color: var(--ols-purple); letter-spacing: -0.03em; line-height: 1.1; }\n    .ols-aqa334-info-card-sub { font-size: 12px; font-weight: 400; color: var(--ols-muted); margin-top: 3px; }\n\n    .ols-aqa334-topics { padding: 72px 0 80px; background: #ffffff; }\n    .ols-aqa334-section-header { margin-bottom: 40px; }\n    .ols-aqa334-section-title { font-size: clamp(28px, 3vw, 44px); font-weight: 800; color: var(--ols-purple); letter-spacing: -0.04em; line-height: 1.1; margin: 0 0 10px; text-shadow: -9px 0 9px rgba(59, 7, 100, 0.08); }\n    .ols-aqa334-section-sub { font-size: 16px; font-weight: 300; color: var(--ols-muted); margin: 0; }\n    .ols-aqa334-cards-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }\n\n    .ols-aqa334-card {\n      display: flex; flex-direction: column; background: #ffffff; border: 1px solid var(--ols-border);\n      border-radius: 22px; overflow: hidden; box-shadow: var(--ols-shadow-soft); text-decoration: none;\n      color: var(--ols-purple); transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.28s ease, border-color 0.28s ease; position: relative;\n    }\n    .ols-aqa334-card.ols-aqa334-card--available:hover { transform: translateY(-10px) scale(1.02); box-shadow: 0 28px 56px rgba(59, 7, 100, 0.16); border-color: rgba(168, 85, 247, 0.35); }\n    .ols-aqa334-card.ols-aqa334-card--available:hover .ols-aqa334-card-img-wrap::after { opacity: 1; }\n    .ols-aqa334-card-img-wrap { position: relative; width: 100%; aspect-ratio: 4 \/ 3; background: var(--ols-soft-purple); overflow: hidden; }\n    .ols-aqa334-card-img-wrap::after { content: \"\"; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(59, 7, 100, 0.18) 100%); opacity: 0; transition: opacity 0.28s ease; z-index: 1; }\n    .ols-aqa334-card-num { position: absolute; top: 12px; left: 12px; width: 32px; height: 32px; border-radius: 50%; background: var(--ols-purple); color: #ffffff; font-size: 13px; font-weight: 800; display: flex; align-items: center; justify-content: center; z-index: 3; box-shadow: 0 4px 12px rgba(59, 7, 100, 0.28); }\n    .ols-aqa334-card-status { position: absolute; top: 12px; right: 12px; padding: 4px 10px; border-radius: 999px; font-size: 10px; font-weight: 700; z-index: 3; }\n    .ols-aqa334-card-status--available { background: #eaf3de; color: #3B6D11; }\n    .ols-aqa334-card-body { padding: 18px 18px 22px; flex: 1; display: flex; flex-direction: column; gap: 6px; }\n    .ols-aqa334-card-title { font-size: 14px; font-weight: 700; color: var(--ols-purple); line-height: 1.35; margin: 0; }\n    .ols-aqa334-card-desc { font-size: 12px; font-weight: 300; color: var(--ols-muted); line-height: 1.6; margin: 0; }\n    .ols-aqa334-card-cta { display: inline-flex; align-items: center; gap: 5px; margin-top: 10px; font-size: 12px; font-weight: 700; color: var(--ols-accent); }\n    .ols-aqa334-card-cta svg { width: 14px; height: 14px; transition: transform 0.2s ease; }\n    .ols-aqa334-card--available:hover .ols-aqa334-card-cta svg { transform: translateX(3px); }\n\n    .ols-aqa334-visual { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; padding: 32px 24px 24px; overflow: hidden; }\n    .ols-aqa334-visual::before, .ols-aqa334-visual::after { content: \"\"; position: absolute; border-radius: 999px; opacity: 0.75; filter: blur(1px); }\n    .ols-aqa334-visual::before { width: 170px; height: 170px; left: -58px; bottom: -66px; background: rgba(255, 255, 255, 0.35); }\n    .ols-aqa334-visual::after { width: 118px; height: 118px; right: -42px; top: -34px; background: rgba(255, 255, 255, 0.28); }\n    .ols-aqa334-visual-panel { position: relative; z-index: 2; width: min(82%, 260px); min-height: 118px; border-radius: 24px; border: 1px solid rgba(255, 255, 255, 0.45); background: rgba(255, 255, 255, 0.76); box-shadow: 0 18px 38px rgba(59, 7, 100, 0.18); backdrop-filter: blur(10px); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 18px; }\n    .ols-aqa334-visual-kicker { display: inline-flex; align-items: center; justify-content: center; min-height: 25px; padding: 4px 10px; border-radius: 999px; background: rgba(59, 7, 100, 0.08); color: var(--ols-purple); font-size: 10px; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 10px; }\n    .ols-aqa334-visual-main { font-size: clamp(23px, 3vw, 32px); font-weight: 800; color: var(--ols-purple); line-height: 1.05; letter-spacing: -0.05em; }\n    .ols-aqa334-config-line { display: inline-flex; gap: 7px; margin-top: 12px; flex-wrap: wrap; justify-content: center; }\n    .ols-aqa334-config-line span { display: inline-flex; min-width: 42px; justify-content: center; padding: 5px 8px; border-radius: 999px; background: #ffffff; border: 1px solid rgba(59, 7, 100, 0.16); font-size: 11px; font-weight: 800; color: var(--ols-purple); }\n\n    .ols-aqa334-visual--ionic { background: radial-gradient(circle at 24% 18%, rgba(255,255,255,0.46), transparent 24%), linear-gradient(135deg, #f5f0ff 0%, #c084fc 45%, #7e22ce 100%); }\n    .ols-aqa334-visual--covalent { background: radial-gradient(circle at 22% 18%, rgba(255,255,255,0.46), transparent 24%), linear-gradient(135deg, #fff7ed 0%, #fb923c 45%, #c2410c 100%); }\n    .ols-aqa334-visual--shapes { background: radial-gradient(circle at 24% 18%, rgba(255,255,255,0.46), transparent 24%), linear-gradient(135deg, #ecfeff 0%, #22d3ee 45%, #0e7490 100%); }\n    .ols-aqa334-visual--polarity { background: radial-gradient(circle at 24% 18%, rgba(255,255,255,0.46), transparent 24%), linear-gradient(135deg, #fdf2f8 0%, #f472b6 45%, #be185d 100%); }\n    .ols-aqa334-visual--metallic { background: radial-gradient(circle at 24% 18%, rgba(255,255,255,0.46), transparent 24%), linear-gradient(135deg, #f8fafc 0%, #94a3b8 45%, #334155 100%); }\n    .ols-aqa334-visual--giant { background: radial-gradient(circle at 24% 18%, rgba(255,255,255,0.46), transparent 24%), linear-gradient(135deg, #eefbf3 0%, #86efac 45%, #15803d 100%); }\n    .ols-aqa334-visual--molecular { background: radial-gradient(circle at 24% 18%, rgba(255,255,255,0.46), transparent 24%), linear-gradient(135deg, #eff6ff 0%, #60a5fa 45%, #1d4ed8 100%); }\n    .ols-aqa334-visual--forces { background: radial-gradient(circle at 24% 18%, rgba(255,255,255,0.46), transparent 24%), linear-gradient(135deg, #fefce8 0%, #facc15 45%, #a16207 100%); }\n\n    .ols-aqa334-spec-section { padding: 72px 0 88px; background: radial-gradient(circle at top center, rgba(168, 85, 247, 0.07), transparent 38%), linear-gradient(180deg, #fbf7f2 0%, #ffffff 100%); }\n    .ols-aqa334-spec-wrap { background: #ffffff; border: 1px solid var(--ols-border); border-radius: 26px; padding: 36px; box-shadow: var(--ols-shadow-soft); }\n    .ols-aqa334-spec-pill { display: inline-flex; align-items: center; padding: 7px 14px; border-radius: 999px; background: var(--ols-soft-purple); border: 1px solid rgba(168, 85, 247, 0.22); color: var(--ols-accent); font-size: 12px; font-weight: 700; margin-bottom: 16px; }\n    .ols-aqa334-spec-heading { font-size: clamp(24px, 2.8vw, 36px); font-weight: 800; color: var(--ols-purple); letter-spacing: -0.035em; line-height: 1.12; margin: 0 0 6px; border-left: 5px solid var(--ols-accent); padding-left: 16px; }\n    .ols-aqa334-spec-intro-text { font-size: 16px; font-weight: 300; color: #3f314c; line-height: 1.8; margin: 14px 0 26px; }\n    .ols-aqa334-spec-group-title { font-size: 20px; font-weight: 800; color: var(--ols-purple); line-height: 1.2; margin: 30px 0 14px; letter-spacing: -0.025em; }\n    .ols-aqa334-spec-rows { display: flex; flex-direction: column; gap: 12px; }\n    .ols-aqa334-spec-row { display: flex; flex-wrap: nowrap; align-items: stretch; border-radius: 16px; overflow: hidden; box-shadow: 0 4px 12px rgba(0,0,0,0.05); }\n    .ols-aqa334-spec-row--light { background: #ffffff; border: 1px solid rgba(168, 85, 247, 0.18); }\n    .ols-aqa334-spec-row--mid { background: #f5f0ff; border: 1px solid rgba(168, 85, 247, 0.22); }\n    .ols-aqa334-spec-code { flex: 0 0 104px; color: #ffffff; font-size: 15px; font-weight: 800; display: flex; align-items: center; justify-content: center; padding: 18px 12px; background: #3b0764; }\n    .ols-aqa334-spec-code--mid { background: #581c87; }\n    .ols-aqa334-spec-text { flex: 1; padding: 16px 20px; font-size: 16px; font-weight: 300; line-height: 1.8; color: #3f314c; }\n    .ols-aqa334-spec-sub-list { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }\n    .ols-aqa334-spec-sub-row { display: flex; align-items: stretch; background: #ffffff; border: 1px solid rgba(168, 85, 247, 0.15); border-radius: 12px; overflow: hidden; }\n    .ols-aqa334-spec-sub-code { flex: 0 0 74px; background: #c084fc; color: #3b0764; font-size: 13px; font-weight: 800; display: flex; align-items: center; justify-content: center; padding: 12px 10px; }\n    .ols-aqa334-spec-sub-text { flex: 1; padding: 12px 16px; font-size: 15px; font-weight: 300; line-height: 1.8; color: #4b3b58; }\n\n    @media (max-width: 1100px) { .ols-aqa334-cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }\n    @media (max-width: 860px) { .ols-aqa334-intro-inner { grid-template-columns: 1fr; gap: 40px; } }\n    @media (max-width: 640px) {\n      .ols-aqa334-intro { padding: 24px 0 52px; }\n      .ols-aqa334-topics { padding: 52px 0 58px; }\n      .ols-aqa334-cards-grid { grid-template-columns: 1fr; gap: 14px; }\n      .ols-aqa334-spec-section { padding: 52px 0 64px; }\n      .ols-aqa334-spec-wrap { padding: 24px 18px; border-radius: 20px; }\n      .ols-aqa334-info-grid { grid-template-columns: 1fr 1fr; }\n      .ols-aqa334-spec-row { flex-direction: column; }\n      .ols-aqa334-spec-code { flex: 0 0 auto; min-height: 34px; }\n    }\n  <\/style>\n\n  <!-- BREADCRUMB BAR -->\n  <div class=\"ols-aqa334-breadcrumb-bar\">\n    <div class=\"ols-aqa334-container\">\n      <nav class=\"ols-aqa334-breadcrumb\" aria-label=\"Breadcrumb\">\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/\">Revision Notes<\/a> \/\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/\">A Level Chemistry<\/a> \/\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/\">AQA<\/a> \/\n        <span>3.3.4 Alkenes<\/span>\n      <\/nav>\n    <\/div>\n  <\/div>\n\n  <!-- INTRO -->\n  <section class=\"ols-aqa334-intro\">\n    <div class=\"ols-aqa334-container\">\n      <div class=\"ols-aqa334-intro-inner\">\n        <div>\n          <div class=\"ols-aqa334-eyebrow\">AQA A Level Chemistry<\/div>\n          <h1>3.3.4<br>Alkenes<\/h1>\n          <div class=\"ols-aqa334-accent-bar\"><\/div>\n          <p class=\"ols-aqa334-intro-lead\">AQA 3.3.4 covers the structure and bonding of alkenes, electrophilic addition with HBr, H<sub>2<\/sub>SO<sub>4<\/sub> and Br<sub>2<\/sub>, the bromine test for unsaturation, major and minor products, and addition polymers including PVC and plasticisers. E-Z isomerism from 3.3.1.3 is revised alongside it.<\/p>\n        <\/div>\n        <div class=\"ols-aqa334-info-grid\">\n          <div class=\"ols-aqa334-info-card\"><div class=\"ols-aqa334-info-card-label\">Exam Paper<\/div><div class=\"ols-aqa334-info-card-value\">Paper 2<\/div><div class=\"ols-aqa334-info-card-sub\">7405\/2<\/div><\/div>\n          <div class=\"ols-aqa334-info-card\"><div class=\"ols-aqa334-info-card-label\">Specification Points<\/div><div class=\"ols-aqa334-info-card-value\">3.3.4.1 &#8211; 3.3.4.3<\/div><div class=\"ols-aqa334-info-card-sub\">plus 3.3.1.3 E-Z isomerism<\/div><\/div>\n          <div class=\"ols-aqa334-info-card\"><div class=\"ols-aqa334-info-card-label\">Topic Parts<\/div><div class=\"ols-aqa334-info-card-value\">5 parts<\/div><div class=\"ols-aqa334-info-card-sub\">Revision notes available<\/div><\/div>\n          <div class=\"ols-aqa334-info-card\"><div class=\"ols-aqa334-info-card-label\">Exam Board<\/div><div class=\"ols-aqa334-info-card-value\">AQA<\/div><div class=\"ols-aqa334-info-card-sub\">AQA 7405<\/div><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- TOPIC CARDS -->\n  <section class=\"ols-aqa334-topics\">\n    <div class=\"ols-aqa334-container\">\n      <div class=\"ols-aqa334-section-header\">\n        <h2 class=\"ols-aqa334-section-title\">Revision Notes<\/h2>\n        <p class=\"ols-aqa334-section-sub\">Work through each part of AQA 3.3.4 in a structured sequence.<\/p>\n      <\/div>\n      <div class=\"ols-aqa334-cards-grid\">\n        <!-- Card 1: Alkene Bonding -->\n        <a class=\"ols-aqa334-card ols-aqa334-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/alkene-bonding\/\">\n          <div class=\"ols-aqa334-card-img-wrap\">\n            <div class=\"ols-aqa334-visual ols-aqa334-visual--ionic\">\n              <div class=\"ols-aqa334-visual-panel\">\n                <div class=\"ols-aqa334-visual-kicker\">\u03c3 and \u03c0 bonds<\/div>\n                <div class=\"ols-aqa334-visual-main\">Alkene<br>Bonding<\/div>\n                <div class=\"ols-aqa334-config-line\" aria-hidden=\"true\"><span>C=C<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa334-card-num\">1<\/div>\n          <\/div>\n          <div class=\"ols-aqa334-card-body\">\n            <p class=\"ols-aqa334-card-title\">Alkene Bonding<\/p>\n            <p class=\"ols-aqa334-card-desc\">Unsaturated hydrocarbons, the double covalent bond as a centre of high electron density, and why alkenes react.<\/p>\n            <span class=\"ols-aqa334-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n        <!-- Card 2: E-Z Isomerism -->\n        <a class=\"ols-aqa334-card ols-aqa334-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/geometric-isomerism\/\">\n          <div class=\"ols-aqa334-card-img-wrap\">\n            <div class=\"ols-aqa334-visual ols-aqa334-visual--shapes\">\n              <div class=\"ols-aqa334-visual-panel\">\n                <div class=\"ols-aqa334-visual-kicker\">Stereoisomers<\/div>\n                <div class=\"ols-aqa334-visual-main\">E-Z<br>Isomerism<\/div>\n                <div class=\"ols-aqa334-config-line\" aria-hidden=\"true\"><span>E \/ Z<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa334-card-num\">2<\/div>\n          <\/div>\n          <div class=\"ols-aqa334-card-body\">\n            <p class=\"ols-aqa334-card-title\">E-Z Isomerism<\/p>\n            <p class=\"ols-aqa334-card-desc\">Restricted rotation about the C=C bond, the conditions for E-Z isomerism and the Cahn-Ingold-Prelog rules (3.3.1.3).<\/p>\n            <span class=\"ols-aqa334-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n        <!-- Card 3: Electrophilic Addition Mechanism -->\n        <a class=\"ols-aqa334-card ols-aqa334-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/electrophilic-addition-mechanism\/\">\n          <div class=\"ols-aqa334-card-img-wrap\">\n            <div class=\"ols-aqa334-visual ols-aqa334-visual--covalent\">\n              <div class=\"ols-aqa334-visual-panel\">\n                <div class=\"ols-aqa334-visual-kicker\">Curly arrows<\/div>\n                <div class=\"ols-aqa334-visual-main\">Electrophilic<br>Addition<\/div>\n                <div class=\"ols-aqa334-config-line\" aria-hidden=\"true\"><span>\u03b4+ \u03b4\u2212<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa334-card-num\">3<\/div>\n          <\/div>\n          <div class=\"ols-aqa334-card-body\">\n            <p class=\"ols-aqa334-card-title\">Electrophilic Addition Mechanism<\/p>\n            <p class=\"ols-aqa334-card-desc\">The mechanism with HBr, H<sub>2<\/sub>SO<sub>4<\/sub> and Br<sub>2<\/sub>, carbocation intermediates and heterolytic fission.<\/p>\n            <span class=\"ols-aqa334-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n        <!-- Card 4: Reactions of Alkenes -->\n        <a class=\"ols-aqa334-card ols-aqa334-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/reactions-of-alkenes\/\">\n          <div class=\"ols-aqa334-card-img-wrap\">\n            <div class=\"ols-aqa334-visual ols-aqa334-visual--giant\">\n              <div class=\"ols-aqa334-visual-panel\">\n                <div class=\"ols-aqa334-visual-kicker\">Addition reactions<\/div>\n                <div class=\"ols-aqa334-visual-main\">Reactions of<br>Alkenes<\/div>\n                <div class=\"ols-aqa334-config-line\" aria-hidden=\"true\"><span>HBr Br\u2082<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa334-card-num\">4<\/div>\n          <\/div>\n          <div class=\"ols-aqa334-card-body\">\n            <p class=\"ols-aqa334-card-title\">Reactions of Alkenes<\/p>\n            <p class=\"ols-aqa334-card-desc\">Halogens, hydrogen halides, concentrated sulfuric acid, the bromine water test and hydration with steam.<\/p>\n            <span class=\"ols-aqa334-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n        <!-- Card 5: Addition Polymers -->\n        <a class=\"ols-aqa334-card ols-aqa334-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/polymerisation-reactions\/\">\n          <div class=\"ols-aqa334-card-img-wrap\">\n            <div class=\"ols-aqa334-visual ols-aqa334-visual--forces\">\n              <div class=\"ols-aqa334-visual-panel\">\n                <div class=\"ols-aqa334-visual-kicker\">Poly(alkenes)<\/div>\n                <div class=\"ols-aqa334-visual-main\">Addition<br>Polymers<\/div>\n                <div class=\"ols-aqa334-config-line\" aria-hidden=\"true\"><span>[ ]n<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa334-card-num\">5<\/div>\n          <\/div>\n          <div class=\"ols-aqa334-card-body\">\n            <p class=\"ols-aqa334-card-title\">Addition Polymers<\/p>\n            <p class=\"ols-aqa334-card-desc\">Addition polymerisation, repeating units, monomers and the IUPAC names of addition polymers.<\/p>\n            <span class=\"ols-aqa334-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n        <!-- Card 6: Polymer Properties and PVC -->\n        <a class=\"ols-aqa334-card ols-aqa334-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/polymer-properties-and-pvc\/\">\n          <div class=\"ols-aqa334-card-img-wrap\">\n            <div class=\"ols-aqa334-visual ols-aqa334-visual--metallic\">\n              <div class=\"ols-aqa334-visual-panel\">\n                <div class=\"ols-aqa334-visual-kicker\">PVC and plasticisers<\/div>\n                <div class=\"ols-aqa334-visual-main\">Polymer<br>Properties<\/div>\n                <div class=\"ols-aqa334-config-line\" aria-hidden=\"true\"><span>C-Cl<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-aqa334-card-num\">6<\/div>\n          <\/div>\n          <div class=\"ols-aqa334-card-body\">\n            <p class=\"ols-aqa334-card-title\">Polymer Properties and PVC<\/p>\n            <p class=\"ols-aqa334-card-desc\">Why addition polymers are unreactive, the intermolecular forces between chains, and how plasticisers modify PVC.<\/p>\n            <span class=\"ols-aqa334-card-cta\">Start revising<svg viewBox=\"0 0 16 16\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><path d=\"M3 8h10M9 4l4 4-4 4\"><\/path><\/svg><\/span>\n          <\/div>\n        <\/a>\n      <\/div>\n    <\/div>\n  <\/section>\n  <!-- SPECIFICATION -->\n  <section class=\"ols-aqa334-spec-section\">\n    <div class=\"ols-aqa334-container\">\n      <div class=\"ols-aqa334-spec-wrap\">\n        <div class=\"ols-aqa334-spec-pill\">Specification Coverage<\/div>\n        <h2 class=\"ols-aqa334-spec-heading\">3.3.4 Alkenes &#8211; AQA A Level Chemistry<\/h2>\n        <p class=\"ols-aqa334-spec-intro-text\">The following AQA specification points outline the knowledge and skills students are expected to demonstrate for Alkenes, together with the E-Z isomerism content from 3.3.1.3 that is assessed with them.<\/p>\n        <h3 class=\"ols-aqa334-spec-group-title\">3.3.4 Alkenes<\/h3>\n        <div class=\"ols-aqa334-spec-rows\">\n          <div class=\"ols-aqa334-spec-row ols-aqa334-spec-row--light\">\n<div class=\"ols-aqa334-spec-code\">3.3.4.1<\/div>\n<div class=\"ols-aqa334-spec-text\"><strong>Structure, bonding and reactivity<\/strong><br>Alkenes are unsaturated hydrocarbons.<br>Bonding in alkenes involves a double covalent bond, a centre of high electron density.<\/div>\n<\/div>\n          <div class=\"ols-aqa334-spec-row ols-aqa334-spec-row--mid\">\n<div class=\"ols-aqa334-spec-code ols-aqa334-spec-code--mid\">3.3.4.2<\/div>\n<div class=\"ols-aqa334-spec-text\"><strong>Addition reactions of alkenes<\/strong><br>Electrophilic addition reactions of alkenes with HBr, H<sub>2<\/sub>SO<sub>4<\/sub> and Br<sub>2<\/sub>.<br>The use of bromine to test for unsaturation.<br>The formation of major and minor products in addition reactions of unsymmetrical alkenes.<br>Students should be able to:<div class=\"ols-aqa334-spec-sub-list\"><div class=\"ols-aqa334-spec-sub-row\"><div class=\"ols-aqa334-spec-sub-code\">1<\/div><div class=\"ols-aqa334-spec-sub-text\">outline the mechanisms for these reactions<\/div><\/div><div class=\"ols-aqa334-spec-sub-row\"><div class=\"ols-aqa334-spec-sub-code\">2<\/div><div class=\"ols-aqa334-spec-sub-text\">explain the formation of major and minor products by reference to the relative stabilities of primary, secondary and tertiary carbocation intermediates.<\/div><\/div><\/div><\/div>\n<\/div>\n          <div class=\"ols-aqa334-spec-row ols-aqa334-spec-row--light\">\n<div class=\"ols-aqa334-spec-code\">3.3.4.3<\/div>\n<div class=\"ols-aqa334-spec-text\"><strong>Addition polymers<\/strong><br>Addition polymers are formed from alkenes and substituted alkenes.<br>The repeating unit of addition polymers.<br>IUPAC rules for naming addition polymers.<br>Addition polymers are unreactive.<br>Appreciate that knowledge and understanding of the production and properties of polymers has developed over time.<br>Typical uses of poly(chloroethene), commonly known as PVC, and how its properties can be modified using a plasticiser.<br>Students should be able to:<div class=\"ols-aqa334-spec-sub-list\"><div class=\"ols-aqa334-spec-sub-row\"><div class=\"ols-aqa334-spec-sub-code\">1<\/div><div class=\"ols-aqa334-spec-sub-text\">draw the repeating unit from a monomer structure<\/div><\/div><div class=\"ols-aqa334-spec-sub-row\"><div class=\"ols-aqa334-spec-sub-code\">2<\/div><div class=\"ols-aqa334-spec-sub-text\">draw the repeating unit from a section of the polymer chain<\/div><\/div><div class=\"ols-aqa334-spec-sub-row\"><div class=\"ols-aqa334-spec-sub-code\">3<\/div><div class=\"ols-aqa334-spec-sub-text\">draw the structure of the monomer from a section of the polymer<\/div><\/div><div class=\"ols-aqa334-spec-sub-row\"><div class=\"ols-aqa334-spec-sub-code\">4<\/div><div class=\"ols-aqa334-spec-sub-text\">explain why addition polymers are unreactive<\/div><\/div><div class=\"ols-aqa334-spec-sub-row\"><div class=\"ols-aqa334-spec-sub-code\">5<\/div><div class=\"ols-aqa334-spec-sub-text\">explain the nature of intermolecular forces between molecules of polyalkenes.<\/div><\/div><\/div><\/div>\n<\/div>\n        <\/div>\n        <h3 class=\"ols-aqa334-spec-group-title\">3.3.1.3 Isomerism<\/h3>\n        <div class=\"ols-aqa334-spec-rows\">\n          <div class=\"ols-aqa334-spec-row ols-aqa334-spec-row--mid\">\n<div class=\"ols-aqa334-spec-code ols-aqa334-spec-code--mid\">3.3.1.3<\/div>\n<div class=\"ols-aqa334-spec-text\"><strong>Isomerism (E-Z stereoisomerism)<\/strong><br>Stereoisomers have the same structural formula but the bonds are arranged differently in space.<br>E-Z isomerism is one form of stereoisomerism and occurs as a result of restricted rotation about the planar carbon-carbon double bond.<br>Cahn-Ingold-Prelog (CIP) priority rules.<br>Students should be able to:<div class=\"ols-aqa334-spec-sub-list\"><div class=\"ols-aqa334-spec-sub-row\"><div class=\"ols-aqa334-spec-sub-code\">1<\/div><div class=\"ols-aqa334-spec-sub-text\">draw the structural formulas of E and Z isomers<\/div><\/div><div class=\"ols-aqa334-spec-sub-row\"><div class=\"ols-aqa334-spec-sub-code\">2<\/div><div class=\"ols-aqa334-spec-sub-text\">apply the CIP priority rules to E and Z isomers.<\/div><\/div><\/div><\/div>\n<\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n  <script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"WebPage\",\n      \"@id\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/#webpage\",\n      \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/\",\n      \"name\": \"3.3.4 Alkenes - AQA A Level Chemistry Revision Notes\",\n      \"description\": \"AQA A Level Chemistry 3.3.4 Alkenes revision notes covering alkene bonding, E-Z isomerism, electrophilic addition, reactions of alkenes and addition polymers.\",\n      \"isPartOf\": {\n        \"@type\": \"WebSite\",\n        \"@id\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/#website\",\n        \"name\": \"Online Learning System\",\n        \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n      },\n      \"about\": [\n        {\n          \"@type\": \"Thing\",\n          \"name\": \"Alkenes\"\n        },\n        {\n          \"@type\": \"Thing\",\n          \"name\": \"E-Z isomerism\"\n        },\n        {\n          \"@type\": \"Thing\",\n          \"name\": \"Electrophilic addition\"\n        },\n        {\n          \"@type\": \"Thing\",\n          \"name\": \"Addition polymers\"\n        }\n      ],\n      \"inLanguage\": \"en-GB\",\n      \"author\": {\n        \"@type\": \"Person\",\n        \"name\": \"Dr. Mohammed Al-Fatah\",\n        \"url\": \"https:\/\/www.linkedin.com\/in\/doctormohammedfatah\/\"\n      },\n      \"publisher\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Online Learning System\",\n        \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n      }\n    },\n    {\n      \"@type\": \"BreadcrumbList\",\n      \"@id\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/#breadcrumb\",\n      \"itemListElement\": [\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 1,\n          \"name\": \"Revision Notes\",\n          \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 2,\n          \"name\": \"A Level Chemistry\",\n          \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 3,\n          \"name\": \"AQA\",\n          \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 4,\n          \"name\": \"3.3.4 Alkenes\",\n          \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/\"\n        }\n      ]\n    },\n    {\n      \"@type\": \"ItemList\",\n      \"@id\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/#parts\",\n      \"name\": \"AQA 3.3.4 Alkenes revision notes\",\n      \"itemListElement\": [\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 1,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"Alkene Bonding\",\n            \"description\": \"Unsaturated hydrocarbons, the double covalent bond as a centre of high electron density, and why alkenes react.\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/alkene-bonding\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"sameAs\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 2,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"E-Z Isomerism\",\n            \"description\": \"Restricted rotation about the C=C bond, the conditions for E-Z isomerism and the Cahn-Ingold-Prelog rules (3.3.1.3).\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/geometric-isomerism\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"sameAs\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 3,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"Electrophilic Addition Mechanism\",\n            \"description\": \"The mechanism with HBr, H2SO4 and Br2, carbocation intermediates and heterolytic fission.\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/electrophilic-addition-mechanism\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"sameAs\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 4,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"Reactions of Alkenes\",\n            \"description\": \"Halogens, hydrogen halides, concentrated sulfuric acid, the bromine water test and hydration with steam.\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/reactions-of-alkenes\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"sameAs\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 5,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"Addition Polymers\",\n            \"description\": \"Addition polymerisation, repeating units, monomers and the IUPAC names of addition polymers.\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/polymerisation-reactions\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"sameAs\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 6,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"Polymer Properties and PVC\",\n            \"description\": \"Why addition polymers are unreactive, the intermolecular forces between chains, and how plasticisers modify PVC.\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/3-3-4-alkenes\/polymer-properties-and-pvc\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"sameAs\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        }\n      ]\n    }\n  ]\n}\n<\/script>\n\n<\/div>\n\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Revision Notes \/ A Level Chemistry \/ AQA \/ 3.3.4 Alkenes AQA A Level Chemistry 3.3.4Alkenes AQA 3.3.4 covers the structure and bonding of alkenes, electrophilic addition with HBr, H2SO4 and Br2, the bromine test for unsaturation, major and minor products, and addition polymers including PVC and plasticisers. E-Z isomerism from 3.3.1.3 is revised alongside [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"parent":5210,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7282","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/7282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/users\/12"}],"replies":[{"embeddable":true,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/comments?post=7282"}],"version-history":[{"count":0,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/7282\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/5210"}],"wp:attachment":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/media?parent=7282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}