{"id":5210,"date":"2026-06-17T11:49:14","date_gmt":"2026-06-17T10:49:14","guid":{"rendered":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/"},"modified":"2026-06-24T11:03:05","modified_gmt":"2026-06-24T10:03:05","slug":"aqa","status":"publish","type":"page","link":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/","title":{"rendered":"AQA"},"content":{"rendered":"\n<div class=\"ols-aqa-page\">\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-aqa-page,\n    .ols-aqa-page * { box-sizing: border-box; }\n\n    .ols-aqa-page {\n      --ols-purple: #3b0764;\n      --ols-purple-2: #581c87;\n      --ols-accent: #a855f7;\n      --ols-accent-2: #7c2d12;\n      --ols-soft-purple: #f5f0ff;\n      --ols-soft-purple-2: #ede9fe;\n      --ols-ink: #13051f;\n      --ols-muted: #5c5268;\n      --ols-soft: #fbf7f2;\n      --ols-soft-2: #f4edf9;\n      --ols-white: #ffffff;\n      --ols-border: rgba(59, 7, 100, 0.13);\n      --ols-shadow: 0 18px 45px rgba(59, 7, 100, 0.13);\n      --ols-shadow-soft: 0 10px 28px rgba(59, 7, 100, 0.09);\n      --ols-radius: 26px;\n      --ols-container: 1180px;\n\n      font-family: \"Poppins\", Arial, sans-serif;\n      color: var(--ols-ink);\n      background:\n        radial-gradient(circle at top left, rgba(168, 85, 247, 0.09), transparent 32%),\n        linear-gradient(180deg, #ffffff 0%, #ffffff 100%);\n      overflow: hidden;\n    }\n\n    .ols-aqa-page a { color: inherit; 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gap: 10px; }\n      .ols-aqa-unit-label { flex-direction: row; border-radius: 14px; min-height: auto; padding: 12px 16px; justify-content: flex-start; text-align: left; gap: 10px; }\n      .ols-aqa-topics-wrap { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }\n      .ols-aqa-topic-chip { width: 100%; min-width: 0; max-width: none; }\n      .ols-aqa-topic-chip:last-child:nth-child(odd) { grid-column: 1 \/ -1; }\n    }\n\n    @media (max-width: 460px) {\n      .ols-aqa-hero h1 { font-size: 42px; }\n      .ols-aqa-choice-card { padding: 28px 22px; }\n      .ols-aqa-faq-question { min-height: 76px; padding: 20px; grid-template-columns: minmax(0, 1fr) 32px; gap: 14px; font-size: 14px; }\n      .ols-aqa-faq-icon { width: 32px; height: 32px; }\n      .ols-aqa-faq-answer-inner { padding: 16px 20px 22px; }\n    }\n  <\/style>\n\n  <!-- BREADCRUMB BAR -->\n  <div class=\"ols-aqa-breadcrumb-bar\">\n    <div class=\"ols-aqa-container\">\n      <nav class=\"ols-aqa-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        <span>AQA<\/span>\n      <\/nav>\n    <\/div>\n  <\/div>\n\n  <!-- TOPIC NAVIGATOR -->\n  <section class=\"ols-aqa-navigator\">\n    <div class=\"ols-aqa-container\">\n      <div class=\"ols-aqa-nav-intro\">\n        <div class=\"ols-aqa-nav-eyebrow\">AQA A Level Chemistry (7405)<\/div>\n        <h2 class=\"ols-aqa-nav-heading\">Revision Notes by Specification Reference<\/h2>\n        <p class=\"ols-aqa-nav-sub\">Select a specification area to access structured AQA revision notes, practical links and exam practice as pages are released.<\/p>\n      <\/div>\n      <div id=\"ols-aqa-units-container\"><\/div>\n      <div class=\"ols-aqa-nav-legend\">\n        <div class=\"ols-aqa-nav-legend-item\"><span class=\"ols-aqa-nav-legend-dot ols-legend-available\"><\/span>Available<\/div>\n        <div class=\"ols-aqa-nav-legend-item\"><span class=\"ols-aqa-nav-legend-dot ols-legend-soon\"><\/span>Coming soon<\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- HERO -->\n  <section class=\"ols-aqa-hero\">\n    <div class=\"ols-aqa-container\">\n      <div class=\"ols-aqa-hero-grid\">\n        <div class=\"ols-aqa-hero-copy\">\n          <div class=\"ols-aqa-eyebrow\">Introduction<\/div>\n          <h1>AQA<br>A Level<br>Chemistry<\/h1>\n          <p class=\"ols-aqa-hero-lead\">\n            AQA A Level Chemistry is a linear qualification assessed at the end of the two-year course. The specification is organised into Physical Chemistry, Inorganic Chemistry and Organic Chemistry, with the first-year content also forming the AS subject content.\n          <\/p>\n          <div class=\"ols-aqa-hero-actions\">\n            <a class=\"ols-aqa-btn\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/aqa-chemistry-gce\/\">View Courses<\/a>\n          <\/div>\n        <\/div>\n\n        <div class=\"ols-aqa-info-panel\" aria-label=\"AQA A Level Chemistry overview\">\n          <div class=\"ols-aqa-info-item\">\n            <h2>A Linear Qualification<\/h2>\n            <p>\n              AQA A Level Chemistry is assessed through three written papers taken at the end of the course. It is structured around specification code 7405 and uses the A*-E A Level grading scale.\n            <\/p>\n          <\/div>\n          <div class=\"ols-aqa-info-item\">\n            <h2>Practical Endorsement<\/h2>\n            <p>\n              Students complete the required practical activities and develop practical competencies throughout the course. Practical understanding is assessed in the written papers, while the practical endorsement is reported separately.\n            <\/p>\n          <\/div>\n          <div class=\"ols-aqa-info-item\">\n            <h2>AS Level Chemistry<\/h2>\n            <p>\n              AQA AS Chemistry is a separate standalone qualification. The AS content is drawn from the first-year A Level content across Physical, Inorganic and Organic Chemistry.\n            <\/p>\n          <\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- THREE PAPERS -->\n  <section class=\"ols-aqa-papers\">\n    <div class=\"ols-aqa-container\">\n      <div class=\"ols-aqa-papers-grid\">\n        <div class=\"ols-aqa-paper-panel\">\n          <div class=\"ols-aqa-paper-item\">\n            <h3>Paper 1 &#8211; Physical Chemistry and Inorganic Chemistry<\/h3>\n            <div class=\"ols-aqa-paper-meta\">\n              Paper code: 7405\/1<br>\n              Written examination: 2 hours | 105 marks | 35% of total A Level\n            <\/div>\n            <p>\n              Assesses relevant Physical Chemistry topics, Inorganic Chemistry and relevant practical skills. This includes atomic structure, amount of substance, bonding, energetics, equilibria, thermodynamics, acids and bases, periodicity, Group 2, Group 7, Period 3 and transition metals.\n            <\/p>\n          <\/div>\n          <div class=\"ols-aqa-paper-item\">\n            <h3>Paper 2 &#8211; Physical Chemistry and Organic Chemistry<\/h3>\n            <div class=\"ols-aqa-paper-meta\">\n              Paper code: 7405\/2<br>\n              Written examination: 2 hours | 105 marks | 35% of total A Level\n            <\/div>\n            <p>\n              Assesses relevant Physical Chemistry topics, Organic Chemistry and relevant practical skills. This includes amount of substance, bonding, energetics, kinetics, equilibria, rate equations and the full organic chemistry sequence.\n            <\/p>\n          <\/div>\n          <div class=\"ols-aqa-paper-item\">\n            <h3>Paper 3 &#8211; Practical Skills, Data and Synoptic Chemistry<\/h3>\n            <div class=\"ols-aqa-paper-meta\">\n              Paper code: 7405\/3<br>\n              Written examination: 2 hours | 90 marks | 30% of total A Level\n            <\/div>\n            <p>\n              Assesses any content from the specification and any practical skills. This paper includes practical technique, data handling, analysis, evaluation and synoptic problem solving across Physical, Inorganic and Organic Chemistry.\n            <\/p>\n          <\/div>\n        <\/div>\n\n        <div class=\"ols-aqa-papers-copy\">\n          <h2 class=\"ols-aqa-section-title\">The Three Papers &#8211; How The A Level Is Assessed<\/h2>\n          <p>\n            The AQA A Level is assessed through three externally examined papers. Papers 1 and 2 divide the content by chemistry discipline, while Paper 3 draws across the full course and places a strong emphasis on practical skills, data interpretation and synoptic reasoning.\n          <\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- PATHWAY -->\n  <section class=\"ols-aqa-pathway\">\n    <div class=\"ols-aqa-container\">\n      <div class=\"ols-aqa-pathway-card\">\n        <h2>AQA Specification Pathway<\/h2>\n        <p>\n          AQA Chemistry is organised by discipline rather than Edexcel-style numbered topics. OLS course cards pool the relevant AQA specification references together so that students can study coherent course units while still seeing the exact AQA specification coverage.\n        <\/p>\n        <div class=\"ols-aqa-pathway-list\">\n          <div class=\"ols-aqa-pathway-pill\"><strong>3.1 Physical Chemistry<\/strong>Atomic structure, amount of substance, bonding, energetics, kinetics, equilibria, redox and further A Level physical chemistry.<\/div>\n          <div class=\"ols-aqa-pathway-pill\"><strong>3.2 Inorganic Chemistry<\/strong>Periodicity, Group 2, Group 7, Period 3, transition metals and reactions of aqueous ions.<\/div>\n          <div class=\"ols-aqa-pathway-pill\"><strong>3.3 Organic Chemistry<\/strong>Organic analysis, alkanes, halogenoalkanes, alkenes, alcohols, carbonyls, polymers, synthesis and spectroscopy.<\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- STUDY WITH OLS -->\n  <section class=\"ols-aqa-study\">\n    <div class=\"ols-aqa-container\">\n      <h2>Study AQA Chemistry with OLS<\/h2>\n      <p>\n        OLS AQA courses are built around specification references, with structured revision notes, worked examples, exam-style practice and clear links between practical skills and written exam questions.\n      <\/p>\n      <a class=\"ols-aqa-btn\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/aqa-chemistry-gce\/\">View Courses<\/a>\n      <div class=\"ols-aqa-study-image\">\n        <img decoding=\"async\" src=\"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-content\/uploads\/2025\/07\/a-level-chemistry-virtual-lesson-tutor.webp\" alt=\"AQA A Level Chemistry online virtual lesson with tutor\" title=\"Study AQA Chemistry with OLS\">\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- CHOICE CARDS -->\n  <section class=\"ols-aqa-choice\">\n    <div class=\"ols-aqa-container\">\n      <div class=\"ols-aqa-choice-grid\">\n        <article class=\"ols-aqa-choice-card\">\n          <span class=\"ols-aqa-badge\">Full Qualification<\/span>\n          <h2>Take the A Level if&#8230;<\/h2>\n          <div class=\"ols-aqa-choice-line\"><\/div>\n          <span class=\"ols-aqa-chip\">AQA A Level &#8211; 7405<\/span>\n          <p>\n            You need chemistry for university entry, particularly for medicine, dentistry, pharmacy, biochemistry, chemical engineering or related science degrees. The full A Level is the standard two-year qualification used for UK university admissions.\n          <\/p>\n        <\/article>\n        <article class=\"ols-aqa-choice-card\">\n          <span class=\"ols-aqa-badge\">Standalone Award<\/span>\n          <h2>Take the AS Level if&#8230;<\/h2>\n          <div class=\"ols-aqa-choice-line\"><\/div>\n          <span class=\"ols-aqa-chip\">AQA AS Level &#8211; 7404<\/span>\n          <p>\n            You want a recognised one-year chemistry qualification without committing to the full A Level. The AS is a standalone qualification and does not contribute to the final A Level grade.\n          <\/p>\n        <\/article>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- VIDEO -->\n  <section class=\"ols-aqa-video-section\">\n    <div class=\"ols-aqa-container\">\n      <h2>Watch a Chemistry Lesson Preview<\/h2>\n      <p>\n        See how OLS uses visual explanation, molecular models and specialist teacher commentary to support difficult A Level Chemistry topics.\n      <\/p>\n      <div class=\"ols-aqa-video-wrap\">\n        <div class=\"ols-aqa-video-frame\">\n          <iframe src=\"https:\/\/www.youtube.com\/embed\/M0iLMXF5o6o?start=1\" title=\"A Level Chemistry online lesson preview\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\"><\/iframe>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- RESOURCES -->\n  <section class=\"ols-aqa-resources\">\n    <div class=\"ols-aqa-container\">\n      <div class=\"ols-aqa-resource-stack\">\n        <article class=\"ols-aqa-resource-card\">\n          <h3>Official Specification<\/h3>\n          <p>\n            The official AQA Chemistry specification covering subject content, assessment structure, mathematical requirements, practical skills and required practical activities.\n          <\/p>\n          <a class=\"ols-aqa-resource-link\" href=\"INSERT_LINK_HERE\">AQA Chemistry Specification \u2192<\/a>\n        <\/article>\n        <article class=\"ols-aqa-resource-card\">\n          <h3>Past Papers &amp; Mark Schemes<\/h3>\n          <p>\n            The official AQA assessment resources area, including exam papers, mark schemes and examiner reports for AQA A Level Chemistry.\n          <\/p>\n          <a class=\"ols-aqa-resource-link\" href=\"INSERT_LINK_HERE\">AQA Past Papers \u2192<\/a>\n        <\/article>\n        <article class=\"ols-aqa-resource-card\">\n          <h3>Chemistry Reference Library<\/h3>\n          <p>\n            LibreTexts Chemistry is a free, open-access chemistry library covering a wide range of topics at A Level and beyond, useful for deeper reading and alternative explanations of difficult concepts.\n          <\/p>\n          <a class=\"ols-aqa-resource-link\" href=\"INSERT_LINK_HERE\">LibreTexts Chemistry \u2192<\/a>\n        <\/article>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <!-- FAQ -->\n  <section class=\"ols-aqa-faq\">\n    <div class=\"ols-aqa-container\">\n      <h2>FAQ<\/h2>\n      <div class=\"ols-aqa-faq-grid\">\n        <div class=\"ols-aqa-faq-item\">\n          <button class=\"ols-aqa-faq-question\" type=\"button\"><span class=\"ols-aqa-faq-title\">How is AQA A Level Chemistry organised?<\/span><span class=\"ols-aqa-faq-icon\">+<\/span><\/button>\n          <div class=\"ols-aqa-faq-answer\"><div class=\"ols-aqa-faq-answer-inner\">The specification is organised into three main content areas: Physical Chemistry, Inorganic Chemistry and Organic Chemistry. OLS uses these AQA specification references directly so students can revise by exact spec point.<\/div><\/div>\n        <\/div>\n        <div class=\"ols-aqa-faq-item\">\n          <button class=\"ols-aqa-faq-question\" type=\"button\"><span class=\"ols-aqa-faq-title\">How many exams are there for AQA A Level Chemistry?<\/span><span class=\"ols-aqa-faq-icon\">+<\/span><\/button>\n          <div class=\"ols-aqa-faq-answer\"><div class=\"ols-aqa-faq-answer-inner\">There are three written papers: Paper 1, Paper 2 and Paper 3. Papers 1 and 2 are each worth 35% of the A Level, while Paper 3 is worth 30%.<\/div><\/div>\n        <\/div>\n        <div class=\"ols-aqa-faq-item\">\n          <button class=\"ols-aqa-faq-question\" type=\"button\"><span class=\"ols-aqa-faq-title\">Does AQA use Edexcel-style topic numbers?<\/span><span class=\"ols-aqa-faq-icon\">+<\/span><\/button>\n          <div class=\"ols-aqa-faq-answer\"><div class=\"ols-aqa-faq-answer-inner\">No. AQA uses specification references such as 3.1.1 Atomic structure, 3.1.3 Bonding and 3.3.4 Alkenes. OLS course cards may pool several AQA references into a single course unit where that produces a clearer learning sequence.<\/div><\/div>\n        <\/div>\n        <div class=\"ols-aqa-faq-item\">\n          <button class=\"ols-aqa-faq-question\" type=\"button\"><span class=\"ols-aqa-faq-title\">Are practical skills assessed in the written papers?<\/span><span class=\"ols-aqa-faq-icon\">+<\/span><\/button>\n          <div class=\"ols-aqa-faq-answer\"><div class=\"ols-aqa-faq-answer-inner\">Yes. Practical skills and data-handling are assessed across the written papers, especially Paper 3. Students also complete required practical activities during the course.<\/div><\/div>\n        <\/div>\n        <div class=\"ols-aqa-faq-item\">\n          <button class=\"ols-aqa-faq-question\" type=\"button\"><span class=\"ols-aqa-faq-title\">Is the AS Level part of the A Level grade?<\/span><span class=\"ols-aqa-faq-icon\">+<\/span><\/button>\n          <div class=\"ols-aqa-faq-answer\"><div class=\"ols-aqa-faq-answer-inner\">No. AQA AS Chemistry is a standalone qualification. It covers the first-year content but does not contribute to the final A Level grade.<\/div><\/div>\n        <\/div>\n        <div class=\"ols-aqa-faq-item\">\n          <button class=\"ols-aqa-faq-question\" type=\"button\"><span class=\"ols-aqa-faq-title\">How much mathematics is involved?<\/span><span class=\"ols-aqa-faq-icon\">+<\/span><\/button>\n          <div class=\"ols-aqa-faq-answer\"><div class=\"ols-aqa-faq-answer-inner\">AQA Chemistry includes substantial mathematical work, including moles, concentrations, energetics, equilibria, rates, logarithms, graph work and practical-data analysis. Students should be confident rearranging equations and interpreting quantitative data.<\/div><\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n  <\/section>\n\n  <script>\n    (function () {\n      var BASE = \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/aqa\/\";\n\n      var rows = [\n        {\n          id: \"physical-as\", labelClass: \"ols-nav-physical\", chipClass: \"ols-chip-physical\",\n          label: \"3.1\", qual: \"PHYSICAL\", desc: \"AS + A Level\",\n          topics: [\n            { num: \"3.1.1\", name: \"Atomic Structure\", paper: \"Paper 1\", locked: false, href: BASE + \"3-1-1-atomicstructure\/\" },\n            { num: \"3.1.2\", name: \"Amount of Substance\", paper: \"Paper 1 &amp; 2\", locked: false, href: BASE + \"3-1-2-amount-of-substance\/\" },\n            { num: \"3.1.3\", name: \"Bonding\", paper: \"Paper 1 &amp; 2\", locked: false, href: BASE + \"3-1-3-bonding\/\" },\n            { num: \"3.1.4\", name: \"Energetics\", paper: \"Paper 1 &amp; 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