{"id":5028,"date":"2026-06-04T12:03:13","date_gmt":"2026-06-04T11:03:13","guid":{"rendered":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/"},"modified":"2026-06-28T05:49:55","modified_gmt":"2026-06-28T04:49:55","slug":"core-practicals","status":"publish","type":"page","link":"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/","title":{"rendered":"Core Practicals"},"content":{"rendered":"\n<section class=\"ols-revision-page ols-ial-core-practicals-landing-page\">\n  <style>\n    .ols-revision-page {\n      --navy: #1C244B; --blue: #2563eb; --soft-blue: #eef4ff; --soft-purple: #f7f0ff; --soft-green: #f0f7f1; --soft-orange: #fff7ed; --grey-text: #667085; --body-text: #1f2937; --border: rgba(28, 36, 75, 0.14); --shadow: 0 18px 45px rgba(28, 36, 75, 0.10); --inner-shadow: 0 10px 26px rgba(28, 36, 75, 0.08); font-family: Poppins, Arial, sans-serif; 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} }\n    @media (max-width: 760px) { .ols-main { padding: 14px 12px 44px; } .ols-title-card, .ols-note-card, .ols-related-card, .ols-attribution-card { padding: 24px 18px; border-radius: 22px; } .ols-note-title { align-items: flex-start; } .ols-author { align-items: flex-start; padding: 22px 18px; border-radius: 22px; } .ols-author-avatar-img { width: 72px; height: 72px; } .ols-author-title { font-size: 24px; } .ols-author-description { font-size: 15px; } .ols-ert-grid { grid-template-columns: 1fr; } .ols-ert-card { min-height: 285px; } .ols-related-grid { grid-template-columns: 1fr; } }\n  <\/style>\n\n    <main class=\"ols-main\">\n    <nav class=\"ols-breadcrumbs\" 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\/edexcel-international\/\">Edexcel International<\/a> \/\n      <span>Core Practicals<\/span>\n    <\/nav>\n\n    <header class=\"ols-title-card\">\n      <h1>Edexcel International A Level Chemistry Core Practicals<\/h1>\n      <p class=\"ols-page-intro\">Use this landing page to move quickly between the Edexcel International A Level Chemistry core practical revision pages. The practicals are grouped into Unit 3 for IAS practical skills and Unit 6 for IA2 practical skills, so students can revise the correct experimental work for each part of the course.<\/p>\n\n      <div class=\"ols-badges\">\n        <div class=\"ols-badge\">Exam board: Edexcel International<\/div>\n        <div class=\"ols-badge\">Unit 3 and Unit 6: Practical Skills in Chemistry<\/div>\n        <div class=\"ols-badge\">WCH13\/01 and WCH16\/01<\/div>\n      <\/div>\n\n      <div class=\"ols-author\">\n        <img decoding=\"async\" class=\"ols-author-avatar-img\" src=\"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-content\/uploads\/2026\/05\/Author-Profile.jpeg\" alt=\"Dr. Mohammed Al-Fatah\">\n        <div class=\"ols-author-content\">\n          <h2 class=\"ols-author-title\">Written by:<br><span>Dr. Mohammed Al-Fatah<\/span><\/h2>\n          <p class=\"ols-author-description\">Chemistry specialist revision notes for International A Level Chemistry.<\/p>\n          <a class=\"ols-linkedin-pill\" href=\"https:\/\/www.linkedin.com\/in\/doctormohammedfatah\/\" target=\"_blank\" rel=\"noopener noreferrer\">\n            <svg class=\"ols-linkedin-icon\" viewBox=\"0 0 24 24\" fill=\"currentColor\" aria-hidden=\"true\"><path d=\"M4.98 3.5C4.98 4.88 3.86 6 2.48 6S0 4.88 0 3.5 1.12 1 2.48 1s2.5 1.12 2.5 2.5zM.5 8h4V24h-4V8zm7 0h3.8v2.2h.1c.5-.9 1.8-2.2 3.9-2.2 4.2 0 5 2.8 5 6.4V24h-4v-7.6c0-1.8 0-4.2-2.6-4.2s-3 2-3 4v7.8h-4V8z\"><\/path><\/svg>\n            View LinkedIn Profile\n          <\/a>\n        <\/div>\n      <\/div>\n    <\/header>\n\n    <article class=\"ols-note-card soft\">\n      <div class=\"ols-note-title\">\n        <div class=\"ols-note-icon\">16<\/div>\n        <h2>Choose an Edexcel International Core Practical<\/h2>\n      <\/div>\n      <p>Core practical questions test more than a memorised method. Students need to understand apparatus choices, measurement quality, data processing, uncertainty, risk management and how each practical links to the underlying chemistry.<\/p>\n      <div class=\"ols-key-box\"><p><strong>Key idea:<\/strong> The strongest practical answers connect observations and data to chemical reasoning, while using precise apparatus vocabulary and clear evaluation of errors or limitations.<\/p><\/div>\n\n      <div class=\"ols-unit-heading\">\n        <h3>Unit 3: Practical Skills in Chemistry I<\/h3>\n        <p>IAS practical skills linked mainly to Units 1 and 2.<\/p>\n      <\/div>\n\n      <div class=\"ols-ert-grid\">\n        <a class=\"ols-ert-card ols-theme-volume\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-1-molar-volume-of-a-gas\/\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol small-text\" aria-hidden=\"true\">24 dm\u00b3<\/div><\/div>\n          <h3>CP1: Molar Volume of a Gas<\/h3>\n          <p>Measure the molar volume of a gas and connect volume measurements with moles, gas volume and experimental uncertainty.<\/p>\n          <span class=\"ols-ert-meta\">Open practical page<\/span>\n        <\/a>\n\n        <a class=\"ols-ert-card ols-theme-enthalpy\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-2-enthalpy-change-via-hess-law\/\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol \" aria-hidden=\"true\">\u0394H<\/div><\/div>\n          <h3>CP2: Enthalpy Change via Hess&#8217;s Law<\/h3>\n          <p>Use Hess&#8217;s Law to determine an enthalpy change indirectly from experimental temperature-change data.<\/p>\n          <span class=\"ols-ert-meta\">Open practical page<\/span>\n        <\/a>\n\n        <a class=\"ols-ert-card ols-theme-titration\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-3-concentration-of-hcl-by-titration\/\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol medium-text\" aria-hidden=\"true\">HCl<\/div><\/div>\n          <h3>CP3: Concentration of HCl by Titration<\/h3>\n          <p>Find the concentration of hydrochloric acid using titration, concordant results and mole ratio calculations.<\/p>\n          <span class=\"ols-ert-meta\">Open practical page<\/span>\n        <\/a>\n\n        <a class=\"ols-ert-card ols-theme-standard\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-4-preparation-of-a-standard-solution\/\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol medium-text\" aria-hidden=\"true\">Std<\/div><\/div>\n          <h3>CP4: Preparation of a Standard Solution<\/h3>\n          <p>Prepare a standard solution accurately using a balance, volumetric flask and careful transfer technique.<\/p>\n          <span class=\"ols-ert-meta\">Open practical page<\/span>\n        <\/a>\n\n        <a class=\"ols-ert-card ols-theme-halo\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-5-hydrolysis-of-halogenoalkanes\/\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol medium-text\" aria-hidden=\"true\">C-X<\/div><\/div>\n          <h3>CP5: Hydrolysis of Halogenoalkanes<\/h3>\n          <p>Compare rates of hydrolysis of halogenoalkanes and link observations to carbon-halogen bond strength.<\/p>\n          <span class=\"ols-ert-meta\">Open practical page<\/span>\n        <\/a>\n\n        <a class=\"ols-ert-card ols-theme-chlorination\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-6-chlorination-of-2-methylpropan-2-ol\/\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol \" aria-hidden=\"true\">Cl<\/div><\/div>\n          <h3>CP6: Chlorination of 2-methylpropan-2-ol<\/h3>\n          <p>Prepare a chloroalkane from 2-methylpropan-2-ol and revise separation, purification and safe organic technique.<\/p>\n          <span class=\"ols-ert-meta\">Open practical page<\/span>\n        <\/a>\n\n        <a class=\"ols-ert-card ols-theme-oxidation\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-7-oxidation-of-propan-1-ol\/\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol medium-text\" aria-hidden=\"true\">PrOH<\/div><\/div>\n          <h3>CP7: Oxidation of Propan-1-ol<\/h3>\n          <p>Oxidise propan-1-ol and revise distillation, reflux, aldehyde formation and carboxylic acid formation.<\/p>\n          <span class=\"ols-ert-meta\">Open practical page<\/span>\n        <\/a>\n\n        <a class=\"ols-ert-card ols-theme-unknowns\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-8-analysis-of-inorganic-and-organic-unknowns\/\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol \" aria-hidden=\"true\">?<\/div><\/div>\n          <h3>CP8: Analysis of Inorganic and Organic Unknowns<\/h3>\n          <p>Use qualitative tests to identify inorganic ions and organic functional groups from observations.<\/p>\n          <span class=\"ols-ert-meta\">Open practical page<\/span>\n        <\/a>\n      <\/div>\n\n      <div class=\"ols-unit-heading\">\n        <h3>Unit 6: Practical Skills in Chemistry II<\/h3>\n        <p>IA2 practical skills linked mainly to Units 4 and 5.<\/p>\n      <\/div>\n\n      <div class=\"ols-ert-grid\">\n        <div class=\"ols-ert-card ols-coming-soon ols-theme-clock\" aria-disabled=\"true\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol \" aria-hidden=\"true\">t<\/div><\/div>\n          <h3>CP9A\/9B: Iodine-Propanone and Clock Reaction Kinetics<\/h3>\n          <p>Investigate reaction kinetics using iodine-propanone and clock reaction methods with timing and rate data.<\/p>\n          <span class=\"ols-ert-meta\">Coming soon<\/span>\n        <\/div>\n\n        <div class=\"ols-ert-card ols-coming-soon ols-theme-monitoring\" aria-disabled=\"true\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol \" aria-hidden=\"true\">Ea<\/div><\/div>\n          <h3>CP10: Activation Energy of a Reaction<\/h3>\n          <p>Use rate data at different temperatures to determine activation energy and interpret Arrhenius-style evidence.<\/p>\n          <span class=\"ols-ert-meta\">Coming soon<\/span>\n        <\/div>\n\n        <div class=\"ols-ert-card ols-coming-soon ols-theme-titration\" aria-disabled=\"true\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol \" aria-hidden=\"true\">Ka<\/div><\/div>\n          <h3>CP11: Ka Value for a Weak Acid<\/h3>\n          <p>Use pH and concentration data to determine the acid dissociation constant for a weak acid.<\/p>\n          <span class=\"ols-ert-meta\">Coming soon<\/span>\n        <\/div>\n\n        <div class=\"ols-ert-card ols-coming-soon ols-theme-cells\" aria-disabled=\"true\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol \" aria-hidden=\"true\">E\u00b0<\/div><\/div>\n          <h3>CP12: Electrochemical Cells<\/h3>\n          <p>Measure cell potentials and connect practical cell design with electrode systems and standard potentials.<\/p>\n          <span class=\"ols-ert-meta\">Coming soon<\/span>\n        <\/div>\n\n        <div class=\"ols-ert-card ols-coming-soon ols-theme-edta\" aria-disabled=\"true\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol medium-text\" aria-hidden=\"true\">redox<\/div><\/div>\n          <h3>CP13A\/13B: Redox Titrations<\/h3>\n          <p>Carry out redox titration procedures and use mole ratios to determine concentrations from titre data.<\/p>\n          <span class=\"ols-ert-meta\">Coming soon<\/span>\n        <\/div>\n\n        <div class=\"ols-ert-card ols-coming-soon ols-theme-standard\" aria-disabled=\"true\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol medium-text\" aria-hidden=\"true\">Cu\u00b2\u207a<\/div><\/div>\n          <h3>CP14: Preparation of a Transition Metal Complex<\/h3>\n          <p>Prepare a transition metal complex and revise yield, purification and observations linked to complex formation.<\/p>\n          <span class=\"ols-ert-meta\">Coming soon<\/span>\n        <\/div>\n\n        <div class=\"ols-ert-card ols-coming-soon ols-theme-testing\" aria-disabled=\"true\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol \" aria-hidden=\"true\">ID<\/div><\/div>\n          <h3>CP15: Analysis of Inorganic and Organic Unknowns<\/h3>\n          <p>Use systematic qualitative analysis to identify inorganic and organic unknowns in advanced practical contexts.<\/p>\n          <span class=\"ols-ert-meta\">Coming soon<\/span>\n        <\/div>\n\n        <div class=\"ols-ert-card ols-coming-soon ols-theme-aspirin\" aria-disabled=\"true\">\n          <div class=\"ols-ert-visual\"><div class=\"ols-card-symbol medium-text\" aria-hidden=\"true\">ASA<\/div><\/div>\n          <h3>CP16: Preparation of Aspirin<\/h3>\n          <p>Prepare aspirin and revise recrystallisation, yield, purity and organic synthesis technique.<\/p>\n          <span class=\"ols-ert-meta\">Coming soon<\/span>\n        <\/div>\n      <\/div>\n    <\/article>\n\n    <article class=\"ols-note-card purple\">\n      <div class=\"ols-note-title\">\n        <div class=\"ols-note-icon\">\u2713<\/div>\n        <h2>How to Use These Practical Pages<\/h2>\n      <\/div>\n      <p>Start with the practicals from the unit you are currently studying, then return to this page before practical skills revision. For each core practical, make sure you can state the purpose, describe the method accurately, process the data and explain how errors, uncertainty and safety affect the quality of the result.<\/p>\n      <div class=\"ols-key-box\"><p><strong>Exam focus:<\/strong> Practise explaining method improvements, identifying sources of error, choosing suitable apparatus and linking observations to valid conclusions.<\/p><\/div>\n    <\/article>\n\n    <section class=\"ols-related-card\">\n      <h2>Related Edexcel International A Level Chemistry Pages<\/h2>\n      <p>Use these pages to connect practical chemistry with the wider Edexcel International A Level Chemistry course.<\/p>\n      <div class=\"ols-related-grid\">\n        <a class=\"ols-related-item\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/\">Edexcel International A Level Chemistry<\/a>\n        <a class=\"ols-related-item\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/cp-1-molar-volume-of-a-gas\/\">Unit 3 CP1: Molar Volume of a Gas<\/a>\n        <a class=\"ols-related-item\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-8-analysis-of-inorganic-and-organic-unknowns\/\">Unit 3 CP8: Unknowns Analysis<\/a>\n        <a class=\"ols-related-item\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-9a-9b-iodine-propanone-and-clock-reaction-kinetics\/\">Unit 6 CP9A\/9B: Kinetics<\/a>\n        <a class=\"ols-related-item\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-12-electrochemical-cells\/\">Unit 6 CP12: Electrochemical Cells<\/a>\n        <a class=\"ols-related-item\" href=\"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/cp-16-preparation-of-aspirin\/\">Unit 6 CP16: Preparation of Aspirin<\/a>\n      <\/div>\n    <\/section>\n\n    <section class=\"ols-attribution-card\">\n      <p><strong>Copyright notice:<\/strong> This OLS revision content, including the explanations, layout, diagrams, tables and embedded learning structure, is authored for Online Learning System by Dr. Mohammed Al-Fatah. It may not be copied, reproduced, redistributed or adapted without written permission.<\/p>\n    <\/section>\n\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\/edexcel-international\/core-practicals\/#webpage\",\n          \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/\",\n          \"name\": \"Edexcel International A Level Chemistry Core Practicals Revision Notes\",\n          \"description\": \"Landing page for Edexcel International A Level Chemistry core practical revision, split into Unit 3 and Unit 6 practical skills pages including molar volume, enthalpy, titrations, hydrolysis, oxidation, kinetics, electrochemical cells, redox titrations and aspirin preparation.\",\n          \"inLanguage\": \"en-GB\",\n          \"isPartOf\": { \"@type\": \"WebSite\", \"@id\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/#website\", \"name\": \"Online Learning System\", \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\" },\n          \"author\": { \"@type\": \"Person\", \"name\": \"Dr. Mohammed Al-Fatah\", \"url\": \"https:\/\/www.linkedin.com\/in\/doctormohammedfatah\/\" },\n          \"publisher\": { \"@type\": \"Organization\", \"name\": \"Online Learning System\", \"url\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/\" }\n        },\n        {\n          \"@type\": \"BreadcrumbList\",\n          \"@id\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/#breadcrumb\",\n          \"itemListElement\": [\n            { \"@type\": \"ListItem\", \"position\": 1, \"name\": \"Revision Notes\", \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/\" },\n            { \"@type\": \"ListItem\", \"position\": 2, \"name\": \"A Level Chemistry\", \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/\" },\n            { \"@type\": \"ListItem\", \"position\": 3, \"name\": \"Edexcel International\", \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/\" },\n            { \"@type\": \"ListItem\", \"position\": 4, \"name\": \"Core Practicals\", \"item\": \"https:\/\/www.onlinelearningsystem.net\/xyz\/revision-notes\/a-level-chemistry\/edexcel-international\/core-practicals\/\" }\n          ]\n        }\n      ]\n    }\n    <\/script>\n  <\/main>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Revision Notes \/ A Level Chemistry \/ Edexcel International \/ Core Practicals Edexcel International A Level Chemistry Core Practicals Use this landing page to move quickly between the Edexcel International A Level Chemistry core practical revision pages. The practicals are grouped into Unit 3 for IAS practical skills and Unit 6 for IA2 practical skills, [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"parent":1786,"menu_order":8,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5028","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/5028","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=5028"}],"version-history":[{"count":0,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/5028\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/pages\/1786"}],"wp:attachment":[{"href":"https:\/\/www.onlinelearningsystem.net\/xyz\/wp-json\/wp\/v2\/media?parent=5028"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}