{"id":7395,"date":"2026-09-10T20:57:11","date_gmt":"2026-09-10T19:57:11","guid":{"rendered":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/"},"modified":"2026-09-11T17:16:26","modified_gmt":"2026-09-11T16:16:26","slug":"4-1-2-alkanes","status":"publish","type":"page","link":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/","title":{"rendered":"4.1.2 Alkanes"},"content":{"rendered":"\n<div class=\"ols-ocr412-page\">\n\n  <aside class=\"ols-sidebar\">\n  <div class=\"ols-sidebar-header\">\n    <h3>Revision Notes<\/h3>\n    <p>OCR A Level Chemistry A<\/p>\n  <\/div>\n  <div class=\"ols-topic-group\">\n    <h4>4.1.2 Alkanes<\/h4>\n    <ul class=\"ols-topic-list\">\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/\">Section overview<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/bonding-shape-and-properties-of-alkanes\/\">Bonding, Shape and Properties of Alkanes<\/a><\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/crude-oil\/\">Alkanes from Crude Oil<\/a>\n        <ul class=\"ols-subtopic-list\">\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/crude-oil\/fractional-distillation\/\">Fractional Distillation<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/crude-oil\/cracking\/\">Cracking<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/crude-oil\/reforming\/\">Reforming<\/a><\/li>\n        <\/ul>\n      <\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/fuel\/\">Alkanes as Fuel<\/a>\n        <ul class=\"ols-subtopic-list\">\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/fuel\/combustion\/\">Combustion<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/fuel\/oxides-of-sulfur\/\">Oxides of Sulfur<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/fuel\/oxides-of-nitrogen\/\">Oxides of Nitrogen<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/fuel\/catalytic-converter\/\">Catalytic Converter<\/a><\/li>\n        <\/ul>\n      <\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/alternative-fuel\/\">Alternative Fuel<\/a><\/li>\n      <li>\n        <a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/reactions\/\">Reactions of Alkanes<\/a>\n        <ul class=\"ols-subtopic-list\">\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/reactions\/free-radical-substitution\/\">Free Radical Substitution<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/reactions\/initiation\/\">Initiation<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/reactions\/propagation\/\">Propagation<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/reactions\/termination\/\">Termination<\/a><\/li>\n          <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/reactions\/further-substitution\/\">Further Substitution<\/a><\/li>\n        <\/ul>\n      <\/li>\n    <\/ul>\n  <\/div>\n  <div class=\"ols-topic-group\">\n    <h4>Other OCR Sections<\/h4>\n    <ul class=\"ols-topic-list\">\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-1-basic-concepts-of-organic-chemistry\/\">4.1.1 Basic Concepts of Organic Chemistry<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-3-alkenes\/\">4.1.3 Alkenes<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-2-1-alcohols\/\">4.2.1 Alcohols<\/a><\/li>\n      <li><a href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-2-2-haloalkanes\/\">4.2.2 Haloalkanes<\/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-ocr412-page,\n    .ols-ocr412-page * { box-sizing: border-box; }\n\n    .ols-ocr412-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-ocr412-page a { color: inherit; text-decoration: none; }\n    .ols-ocr412-container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }\n\n    .ols-ocr412-breadcrumb-bar { padding: 16px 0 0; }\n    .ols-ocr412-breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; font-size: 13px; color: var(--ols-muted); font-weight: 500; }\n    .ols-ocr412-breadcrumb a { color: var(--ols-muted); transition: color 0.2s ease; }\n    .ols-ocr412-breadcrumb a:hover { color: var(--ols-accent); }\n    .ols-ocr412-breadcrumb span { color: var(--ols-purple); font-weight: 700; }\n\n    .ols-ocr412-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-ocr412-intro-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }\n    .ols-ocr412-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-ocr412-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-ocr412-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-ocr412-accent-bar { width: 72px; height: 4px; background: var(--ols-accent); border-radius: 999px; margin: 0 0 22px; }\n    .ols-ocr412-intro-lead { font-size: clamp(16px, 1.6vw, 19px); font-weight: 300; color: #32104f; line-height: 1.72; margin: 0; }\n\n    .ols-ocr412-info-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }\n    .ols-ocr412-info-card { background: #ffffff; border: 1px solid var(--ols-border); border-radius: 20px; padding: 20px 22px; box-shadow: var(--ols-shadow-soft); }\n    .ols-ocr412-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-ocr412-info-card-value { font-size: 22px; font-weight: 800; color: var(--ols-purple); letter-spacing: -0.03em; line-height: 1.1; }\n    .ols-ocr412-info-card-sub { font-size: 12px; font-weight: 400; color: var(--ols-muted); margin-top: 3px; }\n\n    .ols-ocr412-topics { padding: 72px 0 80px; background: #ffffff; }\n    .ols-ocr412-section-header { margin-bottom: 40px; }\n    .ols-ocr412-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-ocr412-section-sub { font-size: 16px; font-weight: 300; color: var(--ols-muted); margin: 0; }\n    .ols-ocr412-cards-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }\n\n    .ols-ocr412-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-ocr412-card.ols-ocr412-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-ocr412-card.ols-ocr412-card--available:hover .ols-ocr412-card-img-wrap::after { opacity: 1; }\n    .ols-ocr412-card-img-wrap { position: relative; width: 100%; aspect-ratio: 4 \/ 3; background: var(--ols-soft-purple); overflow: hidden; }\n    .ols-ocr412-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-ocr412-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-ocr412-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-ocr412-card-status--available { background: #eaf3de; color: #3B6D11; }\n    .ols-ocr412-card-body { padding: 18px 18px 22px; flex: 1; display: flex; flex-direction: column; gap: 6px; }\n    .ols-ocr412-card-title { font-size: 14px; font-weight: 700; color: var(--ols-purple); line-height: 1.35; margin: 0; }\n    .ols-ocr412-card-desc { font-size: 12px; font-weight: 300; color: var(--ols-muted); line-height: 1.6; margin: 0; }\n    .ols-ocr412-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-ocr412-card-cta svg { width: 14px; height: 14px; transition: transform 0.2s ease; }\n    .ols-ocr412-card--available:hover .ols-ocr412-card-cta svg { transform: translateX(3px); }\n\n    .ols-ocr412-visual { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; padding: 32px 24px 24px; overflow: hidden; }\n    .ols-ocr412-visual::before, .ols-ocr412-visual::after { content: \"\"; position: absolute; border-radius: 999px; opacity: 0.75; filter: blur(1px); }\n    .ols-ocr412-visual::before { width: 170px; height: 170px; left: -58px; bottom: -66px; background: rgba(255, 255, 255, 0.35); }\n    .ols-ocr412-visual::after { width: 118px; height: 118px; right: -42px; top: -34px; background: rgba(255, 255, 255, 0.28); }\n    .ols-ocr412-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-ocr412-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-ocr412-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-ocr412-config-line { display: inline-flex; gap: 7px; margin-top: 12px; flex-wrap: wrap; justify-content: center; }\n    .ols-ocr412-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-ocr412-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-ocr412-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-ocr412-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-ocr412-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-ocr412-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-ocr412-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-ocr412-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-ocr412-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-ocr412-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-ocr412-spec-wrap { background: #ffffff; border: 1px solid var(--ols-border); border-radius: 26px; padding: 36px; box-shadow: var(--ols-shadow-soft); }\n    .ols-ocr412-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-ocr412-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-ocr412-spec-intro-text { font-size: 16px; font-weight: 300; color: #3f314c; line-height: 1.8; margin: 14px 0 26px; }\n    .ols-ocr412-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-ocr412-spec-rows { display: flex; flex-direction: column; gap: 12px; }\n    .ols-ocr412-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-ocr412-spec-row--light { background: #ffffff; border: 1px solid rgba(168, 85, 247, 0.18); }\n    .ols-ocr412-spec-row--mid { background: #f5f0ff; border: 1px solid rgba(168, 85, 247, 0.22); }\n    .ols-ocr412-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-ocr412-spec-code--mid { background: #581c87; }\n    .ols-ocr412-spec-text { flex: 1; padding: 16px 20px; font-size: 16px; font-weight: 300; line-height: 1.8; color: #3f314c; }\n    .ols-ocr412-spec-sub-list { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }\n    .ols-ocr412-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-ocr412-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-ocr412-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-ocr412-cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }\n    @media (max-width: 860px) { .ols-ocr412-intro-inner { grid-template-columns: 1fr; gap: 40px; } }\n    @media (max-width: 640px) {\n      .ols-ocr412-intro { padding: 24px 0 52px; }\n      .ols-ocr412-topics { padding: 52px 0 58px; }\n      .ols-ocr412-cards-grid { grid-template-columns: 1fr; gap: 14px; }\n      .ols-ocr412-spec-section { padding: 52px 0 64px; }\n      .ols-ocr412-spec-wrap { padding: 24px 18px; border-radius: 20px; }\n      .ols-ocr412-info-grid { grid-template-columns: 1fr 1fr; }\n      .ols-ocr412-spec-row { flex-direction: column; }\n      .ols-ocr412-spec-code { flex: 0 0 auto; min-height: 34px; }\n    }\n  <\/style>\n\n  <!-- BREADCRUMB BAR -->\n  <div class=\"ols-ocr412-breadcrumb-bar\">\n    <div class=\"ols-ocr412-container\">\n      <nav class=\"ols-ocr412-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\/ocr-a\/\">OCR<\/a> \/\n        <span>4.1.2 Alkanes<\/span>\n      <\/nav>\n    <\/div>\n  <\/div>\n\n  <!-- INTRO -->\n  <section class=\"ols-ocr412-intro\">\n    <div class=\"ols-ocr412-container\">\n      <div class=\"ols-ocr412-intro-inner\">\n        <div>\n          <div class=\"ols-ocr412-eyebrow\">OCR A Level Chemistry A<\/div>\n          <h1>4.1.2<br>Alkanes<\/h1>\n          <div class=\"ols-ocr412-accent-bar\"><\/div>\n          <p class=\"ols-ocr412-intro-lead\">OCR 4.1.2 covers alkanes as saturated hydrocarbons with \u03c3-bonds and a tetrahedral shape, the boiling-point trends explained by London forces, why alkanes are so unreactive, their complete and incomplete combustion as fuels, and radical substitution with chlorine and bromine under ultraviolet light.<\/p>\n        <\/div>\n        <div class=\"ols-ocr412-info-grid\">\n          <div class=\"ols-ocr412-info-card\"><div class=\"ols-ocr412-info-card-label\">Exam Paper<\/div><div class=\"ols-ocr412-info-card-value\">Paper 2<\/div><div class=\"ols-ocr412-info-card-sub\">H432\/02<\/div><\/div>\n          <div class=\"ols-ocr412-info-card\"><div class=\"ols-ocr412-info-card-label\">Specification Points<\/div><div class=\"ols-ocr412-info-card-value\">4.1.2(a) &#8211; 4.1.2(g)<\/div><div class=\"ols-ocr412-info-card-sub\">7 learning outcomes<\/div><\/div>\n          <div class=\"ols-ocr412-info-card\"><div class=\"ols-ocr412-info-card-label\">Topic Parts<\/div><div class=\"ols-ocr412-info-card-value\">5 parts<\/div><div class=\"ols-ocr412-info-card-sub\">16 revision pages<\/div><\/div>\n          <div class=\"ols-ocr412-info-card\"><div class=\"ols-ocr412-info-card-label\">Exam Board<\/div><div class=\"ols-ocr412-info-card-value\">OCR<\/div><div class=\"ols-ocr412-info-card-sub\">OCR H432<\/div><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- TOPIC CARDS -->\n  <section class=\"ols-ocr412-topics\">\n    <div class=\"ols-ocr412-container\">\n      <div class=\"ols-ocr412-section-header\">\n        <h2 class=\"ols-ocr412-section-title\">Revision Notes<\/h2>\n        <p class=\"ols-ocr412-section-sub\">Work through each part of OCR 4.1.2 in a structured sequence.<\/p>\n      <\/div>\n      <div class=\"ols-ocr412-cards-grid\">\n        <!-- Card 1: Alkanes from Crude Oil -->\n        <a class=\"ols-ocr412-card ols-ocr412-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/crude-oil\/\">\n          <div class=\"ols-ocr412-card-img-wrap\">\n            <div class=\"ols-ocr412-visual ols-ocr412-visual--ionic\">\n              <div class=\"ols-ocr412-visual-panel\">\n                <div class=\"ols-ocr412-visual-kicker\">Source<\/div>\n                <div class=\"ols-ocr412-visual-main\">Crude<br>Oil<\/div>\n                <div class=\"ols-ocr412-config-line\" aria-hidden=\"true\"><span>C\u2099H\u2082\u2099\u208a\u2082<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr412-card-num\">1<\/div>\n          <\/div>\n          <div class=\"ols-ocr412-card-body\">\n            <p class=\"ols-ocr412-card-title\">Alkanes from Crude Oil<\/p>\n            <p class=\"ols-ocr412-card-desc\">Fractional distillation, cracking and reforming: where alkanes come from and how fractions are processed.<\/p>\n            <span class=\"ols-ocr412-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: Alkanes as Fuel -->\n        <a class=\"ols-ocr412-card ols-ocr412-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/fuel\/\">\n          <div class=\"ols-ocr412-card-img-wrap\">\n            <div class=\"ols-ocr412-visual ols-ocr412-visual--covalent\">\n              <div class=\"ols-ocr412-visual-panel\">\n                <div class=\"ols-ocr412-visual-kicker\">Combustion<\/div>\n                <div class=\"ols-ocr412-visual-main\">Alkanes<br>as Fuel<\/div>\n                <div class=\"ols-ocr412-config-line\" aria-hidden=\"true\"><span>CO\u2082 H\u2082O<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr412-card-num\">2<\/div>\n          <\/div>\n          <div class=\"ols-ocr412-card-body\">\n            <p class=\"ols-ocr412-card-title\">Alkanes as Fuel<\/p>\n            <p class=\"ols-ocr412-card-desc\">Complete and incomplete combustion, oxides of sulfur and nitrogen, and catalytic converters.<\/p>\n            <span class=\"ols-ocr412-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: Alternative Fuel -->\n        <a class=\"ols-ocr412-card ols-ocr412-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/alternative-fuel\/\">\n          <div class=\"ols-ocr412-card-img-wrap\">\n            <div class=\"ols-ocr412-visual ols-ocr412-visual--metallic\">\n              <div class=\"ols-ocr412-visual-panel\">\n                <div class=\"ols-ocr412-visual-kicker\">Sustainability<\/div>\n                <div class=\"ols-ocr412-visual-main\">Alternative<br>Fuels<\/div>\n                <div class=\"ols-ocr412-config-line\" aria-hidden=\"true\"><span>H\u2082<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr412-card-num\">3<\/div>\n          <\/div>\n          <div class=\"ols-ocr412-card-body\">\n            <p class=\"ols-ocr412-card-title\">Alternative Fuel<\/p>\n            <p class=\"ols-ocr412-card-desc\">Biofuels, hydrogen and carbon neutrality compared with fossil fuels (extension for this board).<\/p>\n            <span class=\"ols-ocr412-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 Alkanes -->\n        <a class=\"ols-ocr412-card ols-ocr412-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/reactions\/\">\n          <div class=\"ols-ocr412-card-img-wrap\">\n            <div class=\"ols-ocr412-visual ols-ocr412-visual--shapes\">\n              <div class=\"ols-ocr412-visual-panel\">\n                <div class=\"ols-ocr412-visual-kicker\">Mechanism<\/div>\n                <div class=\"ols-ocr412-visual-main\">Radical<br>Substitution<\/div>\n                <div class=\"ols-ocr412-config-line\" aria-hidden=\"true\"><span>Cl&bull;<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr412-card-num\">4<\/div>\n          <\/div>\n          <div class=\"ols-ocr412-card-body\">\n            <p class=\"ols-ocr412-card-title\">Reactions of Alkanes<\/p>\n            <p class=\"ols-ocr412-card-desc\">Free-radical substitution with halogens under UV light: initiation, propagation, termination and further substitution.<\/p>\n            <span class=\"ols-ocr412-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: Bonding, Shape and Properties of Alkanes -->\n        <a class=\"ols-ocr412-card ols-ocr412-card--available\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/bonding-shape-and-properties-of-alkanes\/\">\n          <div class=\"ols-ocr412-card-img-wrap\">\n            <div class=\"ols-ocr412-visual ols-ocr412-visual--forces\">\n              <div class=\"ols-ocr412-visual-panel\">\n                <div class=\"ols-ocr412-visual-kicker\">Structure<\/div>\n                <div class=\"ols-ocr412-visual-main\">Bonding &amp;<br>Shape<\/div>\n                <div class=\"ols-ocr412-config-line\" aria-hidden=\"true\"><span>109.5\u00b0<\/span><\/div>\n              <\/div>\n            <\/div>\n            <div class=\"ols-ocr412-card-num\">5<\/div>\n          <\/div>\n          <div class=\"ols-ocr412-card-body\">\n            <p class=\"ols-ocr412-card-title\">Bonding, Shape and Properties of Alkanes<\/p>\n            <p class=\"ols-ocr412-card-desc\">\u03c3-bonds and free rotation, the tetrahedral shape, boiling points and London forces, and why alkanes are unreactive (4.1.2(a)-(d)).<\/p>\n            <span class=\"ols-ocr412-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-ocr412-spec-section\">\n    <div class=\"ols-ocr412-container\">\n      <div class=\"ols-ocr412-spec-wrap\">\n        <div class=\"ols-ocr412-spec-pill\">Specification Coverage<\/div>\n        <h2 class=\"ols-ocr412-spec-heading\">4.1.2 Alkanes &#8211; OCR A Level Chemistry A<\/h2>\n        <p class=\"ols-ocr412-spec-intro-text\">The following OCR specification points outline the knowledge and skills students are expected to demonstrate for Alkanes.<\/p>\n        <h3 class=\"ols-ocr412-spec-group-title\">4.1.2 Alkanes<\/h3>\n        <div class=\"ols-ocr412-spec-rows\">\n          <div class=\"ols-ocr412-spec-row ols-ocr412-spec-row--light\">\n<div class=\"ols-ocr412-spec-code\">4.1.2(a)<\/div>\n<div class=\"ols-ocr412-spec-text\"><strong>Saturated hydrocarbons<\/strong><br>Alkanes as saturated hydrocarbons containing single C-C and C-H bonds as \u03c3-bonds (overlap of orbitals directly between the bonding atoms); free rotation of the \u03c3-bond.<\/div>\n<\/div>\n          <div class=\"ols-ocr412-spec-row ols-ocr412-spec-row--mid\">\n<div class=\"ols-ocr412-spec-code ols-ocr412-spec-code--mid\">4.1.2(b)<\/div>\n<div class=\"ols-ocr412-spec-text\"><strong>Shape<\/strong><br>Explanation of the tetrahedral shape and bond angle around each carbon atom in alkanes in terms of electron pair repulsion.<\/div>\n<\/div>\n          <div class=\"ols-ocr412-spec-row ols-ocr412-spec-row--light\">\n<div class=\"ols-ocr412-spec-code\">4.1.2(c)<\/div>\n<div class=\"ols-ocr412-spec-text\"><strong>Boiling points<\/strong><br>Explanation of the variations in boiling points of alkanes with different carbon-chain length and branching, in terms of induced dipole-dipole interactions (London forces).<\/div>\n<\/div>\n          <div class=\"ols-ocr412-spec-row ols-ocr412-spec-row--mid\">\n<div class=\"ols-ocr412-spec-code ols-ocr412-spec-code--mid\">4.1.2(d)<\/div>\n<div class=\"ols-ocr412-spec-text\"><strong>Low reactivity<\/strong><br>The low reactivity of alkanes with many reagents in terms of the high bond enthalpy and very low polarity of the \u03c3-bonds present.<\/div>\n<\/div>\n          <div class=\"ols-ocr412-spec-row ols-ocr412-spec-row--light\">\n<div class=\"ols-ocr412-spec-code\">4.1.2(e)<\/div>\n<div class=\"ols-ocr412-spec-text\"><strong>Combustion<\/strong><br>Complete combustion of alkanes, as used in fuels, and the incomplete combustion of alkane fuels in a limited supply of oxygen with the resulting potential dangers from CO.<\/div>\n<\/div>\n          <div class=\"ols-ocr412-spec-row ols-ocr412-spec-row--mid\">\n<div class=\"ols-ocr412-spec-code ols-ocr412-spec-code--mid\">4.1.2(f)<\/div>\n<div class=\"ols-ocr412-spec-text\"><strong>Radical substitution<\/strong><br>The reaction of alkanes with chlorine and bromine by radical substitution using ultraviolet radiation, including a mechanism involving homolytic fission and radical reactions in terms of initiation, propagation and termination.<\/div>\n<\/div>\n          <div class=\"ols-ocr412-spec-row ols-ocr412-spec-row--light\">\n<div class=\"ols-ocr412-spec-code\">4.1.2(g)<\/div>\n<div class=\"ols-ocr412-spec-text\"><strong>Limitations of radical substitution<\/strong><br>The limitations of radical substitution in synthesis by the formation of a mixture of organic products, in terms of further substitution and reactions at different positions in a carbon chain.<\/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\/ocr-a\/4-1-2-alkanes\/#webpage\",\n      \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/\",\n      \"name\": \"4.1.2 Alkanes | OCR A Level Chemistry A\",\n      \"description\": \"OCR A Level Chemistry A 4.1.2 revision notes: crude oil and cracking, combustion and pollutants, alternative fuels, and free-radical substitution of alkanes.\",\n      \"isPartOf\": {\n        \"@type\": \"WebSite\",\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\/ocr-a\/4-1-2-alkanes\/#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\": \"OCR A\",\n          \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/\"\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 4,\n          \"name\": \"4.1.2 Alkanes\",\n          \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/\"\n        }\n      ]\n    },\n    {\n      \"@type\": \"ItemList\",\n      \"@id\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/#parts\",\n      \"name\": \"4.1.2 Alkanes | OCR A Level Chemistry A\",\n      \"itemListElement\": [\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 1,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"Alkanes from Crude Oil\",\n            \"description\": \"Fractional distillation, cracking and reforming: where alkanes come from and how fractions are processed.\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/crude-oil\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 2,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"Alkanes as Fuel\",\n            \"description\": \"Complete and incomplete combustion, oxides of sulfur and nitrogen, and catalytic converters.\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/fuel\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 3,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"Alternative Fuel\",\n            \"description\": \"Biofuels, hydrogen and carbon neutrality compared with fossil fuels (extension for this board).\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/alternative-fuel\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\"\n            }\n          }\n        },\n        {\n          \"@type\": \"ListItem\",\n          \"position\": 4,\n          \"item\": {\n            \"@type\": \"Course\",\n            \"name\": \"Reactions of Alkanes\",\n            \"description\": \"Free-radical substitution with halogens under UV light: initiation, propagation, termination and further substitution.\",\n            \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/ocr-a\/4-1-2-alkanes\/reactions\/\",\n            \"provider\": {\n              \"@type\": \"Organization\",\n              \"name\": \"Online Learning System\",\n              \"url\": \"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 \/ OCR \/ 4.1.2 Alkanes OCR A Level Chemistry A 4.1.2Alkanes OCR 4.1.2 covers alkanes as saturated hydrocarbons with \u03c3-bonds and a tetrahedral shape, the boiling-point trends explained by London forces, why alkanes are so unreactive, their complete and incomplete combustion as fuels, and radical substitution with chlorine and [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"parent":7117,"menu_order":14,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7395","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/7395","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=7395"}],"version-history":[{"count":0,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/7395\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/7117"}],"wp:attachment":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/media?parent=7395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}