<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="//www.onlinelearningsystem.net/xyz/main-sitemap.xsl"?>
<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd http://www.google.com/schemas/sitemap-image/1.1 http://www.google.com/schemas/sitemap-image/1.1/sitemap-image.xsd" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/</loc>
		<lastmod>2026-09-06T14:13:52+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-international-a-level-chemistry-topic-2-atomic-structure-periodic-table-course-banner.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2025/07/a-level-chemistry-h5p-study-notes-interactive.webp</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-international-a-level-chemistry-topic-2-atomic-structure-periodic-table-course-banner.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2025/07/a-level-chemistry-multiple-choice-questions.webp</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2025/07/a-level-chemistry-short-answer-questions.webp</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-2-bonding-and-structure/covalent-bonding/</loc>
		<lastmod>2026-09-19T18:38:07+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-2-bonding-and-structure/ionic-bonding/</loc>
		<lastmod>2026-09-19T18:38:05+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-3-bonding-structure/metallic-bonding/</loc>
		<lastmod>2026-09-19T18:38:04+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-3-bonding-structure/nature-of-covalent-bonding/</loc>
		<lastmod>2026-09-19T18:38:02+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-3-bonding-structure/ionic-bonding-structure/</loc>
		<lastmod>2026-09-19T18:38:00+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-4-organic-chemistry-and-alkanes/reactions/</loc>
		<lastmod>2026-09-19T18:37:59+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-4-organic-chemistry-and-alkanes/fuel/</loc>
		<lastmod>2026-09-19T18:37:57+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-4-organic-chemistry-and-alkanes/crude-oil/</loc>
		<lastmod>2026-09-19T18:37:55+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-4-organic-chemistry-and-alkanes/organic-chemistry/</loc>
		<lastmod>2026-09-19T18:37:54+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-5-alkenes/reactions-of-alkenes/</loc>
		<lastmod>2026-09-19T18:37:52+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-1-formulae-equations-and-amount-of-substance/empirical-and-molecular-formulae/</loc>
		<lastmod>2026-09-19T18:37:51+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-1-formulae-equations-and-amount-of-substance/equations-and-reaction-types/</loc>
		<lastmod>2026-09-19T18:37:49+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-3-bonding-structure/shapes-of-molecules/</loc>
		<lastmod>2026-09-19T18:37:47+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-5-chemical-energetics/</loc>
		<lastmod>2026-09-18T11:09:03+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/3-2-1-enthalpy-changes/</loc>
		<lastmod>2026-09-18T11:08:49+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-4-energetics/</loc>
		<lastmod>2026-09-18T11:08:37+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-8-energetics-i/</loc>
		<lastmod>2026-09-18T11:08:24+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-6-energetics/</loc>
		<lastmod>2026-09-18T11:08:12+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-7-intermolecular-forces/</loc>
		<lastmod>2026-09-18T11:03:17+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-3-chemical-bonding/</loc>
		<lastmod>2026-09-18T10:37:40+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/2-2-2-bonding-and-structure/</loc>
		<lastmod>2026-09-18T10:37:39+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-3-bonding/intermolecular-forces/</loc>
		<lastmod>2026-09-16T17:02:42+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-2-atoms-molecules-and-stoichiometry/</loc>
		<lastmod>2026-09-15T07:35:23+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/2-1-4-acids/</loc>
		<lastmod>2026-09-15T07:35:21+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/2-1-3-amount-of-substance/</loc>
		<lastmod>2026-09-15T07:35:19+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/2-1-2-compounds-formulae-and-equations/</loc>
		<lastmod>2026-09-15T07:35:16+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-2-atoms-molecules-and-stoichiometry/calculations-with-solutions-and-gases/</loc>
		<lastmod>2026-09-15T07:24:36+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-2-atoms-molecules-and-stoichiometry/mole-calculations/</loc>
		<lastmod>2026-09-15T07:24:21+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/2-1-3-amount-of-substance/calculations-with-solutions-and-gases/</loc>
		<lastmod>2026-09-15T07:23:59+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/2-1-3-amount-of-substance/mole-calculations/</loc>
		<lastmod>2026-09-15T07:23:43+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-1-atomic-structure/</loc>
		<lastmod>2026-09-14T21:02:37+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-9-the-periodic-table-chemical-periodicity/</loc>
		<lastmod>2026-09-14T21:00:26+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-1-atomic-structure/ionisation-energy/</loc>
		<lastmod>2026-09-14T20:42:13+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-1-atomic-structure/mass-spectrometry/</loc>
		<lastmod>2026-09-14T20:42:04+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/3-1-1-periodicity/ionisation-energy/</loc>
		<lastmod>2026-09-14T20:41:47+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/2-1-1-atomic-structure-and-isotopes/mass-spectrometry/</loc>
		<lastmod>2026-09-14T20:41:37+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/3-1-1-periodicity/</loc>
		<lastmod>2026-09-14T20:41:34+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/2-2-1-electron-structure/</loc>
		<lastmod>2026-09-14T20:41:33+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/2-1-1-atomic-structure-and-isotopes/</loc>
		<lastmod>2026-09-14T20:41:31+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-4-states-of-matter/</loc>
		<lastmod>2026-09-14T19:12:09+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-20-polymerisation/</loc>
		<lastmod>2026-09-14T19:12:06+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-14-hydrocarbons/</loc>
		<lastmod>2026-09-14T19:12:04+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/cie/topic-13-an-introduction-to-as-level-organic-chemistry/</loc>
		<lastmod>2026-09-14T19:12:02+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/4-1-3-alkenes/</loc>
		<lastmod>2026-09-14T19:12:00+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-3-bonding-structure/</loc>
		<lastmod>2026-09-13T18:12:20+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-3-bonding/</loc>
		<lastmod>2026-09-13T18:12:20+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-3-bonding/ionic-bonding/</loc>
		<lastmod>2026-09-13T18:12:20+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-2-1-periodicity/</loc>
		<lastmod>2026-09-11T16:20:15+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-1-atomicstructure/mass-spectrometry/</loc>
		<lastmod>2026-09-11T16:20:13+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-1-atomicstructure/ionisation-energy/</loc>
		<lastmod>2026-09-11T16:20:11+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-1-atomicstructure/</loc>
		<lastmod>2026-09-11T16:20:09+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/4-1-2-alkanes/</loc>
		<lastmod>2026-09-11T16:16:26+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-3-2-alkanes/</loc>
		<lastmod>2026-09-11T16:15:53+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/ocr-a/4-1-1-basic-concepts-of-organic-chemistry/</loc>
		<lastmod>2026-09-11T16:05:12+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-3-1-introduction-to-organic-chemistry/</loc>
		<lastmod>2026-09-10T20:35:24+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-3-4-alkenes/</loc>
		<lastmod>2026-09-09T07:04:15+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/aqa-chemistry-gce/</loc>
		<lastmod>2026-09-08T18:05:58+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/09/aqa-a-level-chemistry-3-3-4-alkenes-interactive-course-banner-v2.jpg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/cambridge-chemistry-9701/</loc>
		<lastmod>2026-09-08T18:05:55+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/09/cambridge-international-a-level-chemistry-topic-14-2-alkenes-interactive-course-banner-v2.jpg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/ocr-chemistry-gce/</loc>
		<lastmod>2026-09-08T18:05:53+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/09/ocr-a-level-chemistry-a-4-1-3-alkenes-interactive-course-banner-v2.jpg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/</loc>
		<lastmod>2026-09-08T17:10:29+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/alkenes-pi-bond-molecular-modelling-thumbnail.webp</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/for-schools/</loc>
		<lastmod>2026-09-06T14:13:53+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/chemistry-specialist/</loc>
		<lastmod>2026-09-06T14:13:52+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/shop/</loc>
		<lastmod>2026-08-16T22:55:03+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/checkout/</loc>
		<lastmod>2026-08-16T17:34:31+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/chemistry-blog/</loc>
		<lastmod>2026-06-30T06:55:27+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/06/football.jpg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/chemistry-blog/football-materials-science/</loc>
		<lastmod>2026-06-30T06:53:50+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/06/football-materials-science.png</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/06/football-materials-science.png</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/</loc>
		<lastmod>2026-06-30T04:37:11+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-5-alkenes/</loc>
		<lastmod>2026-06-28T04:55:14+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-4-organic-chemistry-and-alkanes/</loc>
		<lastmod>2026-06-28T04:54:45+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-2-atomic-structure-and-the-periodic-table/mass-spectrometry/</loc>
		<lastmod>2026-06-28T04:53:01+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-2-atomic-structure-and-the-periodic-table/ionisation-energy/</loc>
		<lastmod>2026-06-28T04:52:58+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-1-formulae-equations-and-amount-of-substance/mole-calculations/</loc>
		<lastmod>2026-06-28T04:52:42+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-5-formulae-equations-and-amounts-of-substance/mole-calculations/</loc>
		<lastmod>2026-06-28T04:51:38+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-3-bonding/metallic-bonding/</loc>
		<lastmod>2026-06-24T09:49:40+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-3-bonding/shapes-of-molecules-and-ions/</loc>
		<lastmod>2026-06-24T09:45:35+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-3-bonding/covalent-bonding/</loc>
		<lastmod>2026-06-24T09:21:05+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-2-amount-of-substance/concentration-and-titration-calculations/</loc>
		<lastmod>2026-06-24T07:59:44+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-2-amount-of-substance/chemical-equations-and-reacting-masses/</loc>
		<lastmod>2026-06-24T07:56:41+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-2-amount-of-substance/empirical-and-molecular-formulae/</loc>
		<lastmod>2026-06-24T07:50:54+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/aqa/3-1-2-amount-of-substance/</loc>
		<lastmod>2026-06-24T07:47:07+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/core-practicals/cp-16-testing-organic-unknowns/</loc>
		<lastmod>2026-06-10T10:13:40+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/core-practicals/cp-15-preparing-organic-compound/</loc>
		<lastmod>2026-06-10T10:13:36+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/core-practicals/cp-14-thin-layer-chromatography/</loc>
		<lastmod>2026-06-10T10:13:29+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/core-practicals/cp-11-rates-of-reaction-clock/</loc>
		<lastmod>2026-06-10T10:13:17+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/core-practicals/cp-13-preparation-of-aspirin/</loc>
		<lastmod>2026-06-10T10:13:03+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/core-practicals/cp-12-continuous-monitoring-rates/</loc>
		<lastmod>2026-06-10T10:12:57+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/core-practicals/cp-10-titration-of-edta/</loc>
		<lastmod>2026-06-10T10:12:39+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/core-practicals/cp-9-electrochemical-cells/</loc>
		<lastmod>2026-06-10T10:12:34+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/core-practicals/cp-15-analysis-of-inorganic-and-organic-unknowns/</loc>
		<lastmod>2026-06-10T10:12:13+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/core-practicals/cp-16-preparation-of-aspirin/</loc>
		<lastmod>2026-06-10T10:11:39+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/core-practicals/cp-14-preparation-of-a-transition-metal-complex/</loc>
		<lastmod>2026-06-10T10:10:58+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/core-practicals/cp-13a-13b-redox-titrations/</loc>
		<lastmod>2026-06-10T10:10:50+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/core-practicals/cp-12-electrochemical-cells/</loc>
		<lastmod>2026-06-10T10:10:37+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/core-practicals/cp-11-ka-value-for-a-weak-acid/</loc>
		<lastmod>2026-06-10T10:10:22+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/core-practicals/cp-10-activation-energy-of-a-reaction/</loc>
		<lastmod>2026-06-10T10:10:09+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/core-practicals/cp-9a-9b-iodine-propanone-and-clock-reaction-kinetics/</loc>
		<lastmod>2026-06-10T10:09:55+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/edexcel-chemistry-gce/</loc>
		<lastmod>2026-06-08T05:38:58+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/T1-Atomic-Structure-and-The-Periodic-Table.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/T2AB-Covalent-Bonding-Structure-Shapes-of-Molecules.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/T2AB-Course-Card.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-a-level-chemistry-topic-6a-6b-organic-chemistry-alkanes-course-banner.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-a-level-chemistry-topic-6c-alkenes-interactive-course-banner.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/06/Edexcel-Topic-5-Formulae-Equations-and-Amounts-of-Substance.jpg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/edexcel-international-chemistry-gce/</loc>
		<lastmod>2026-06-08T05:34:02+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-international-a-level-chemistry-topic-1-formulae-equations-amounts-of-substance-course-banner.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-international-a-level-chemistry-topic-2-atomic-structure-periodic-table-course-banner.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-international-a-level-chemistry-topic-3a-3d-ionic-metallic-bonding-course-banner.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-international-a-level-chemistry-topic-3b-3c-covalent-bonding-shapes-of-molecules-course-banner.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-international-a-level-chemistry-topic-4a-4b-organic-chemistry-alkanes-course-banner.jpg</image:loc>
		</image:image>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/04/edexcel-international-a-level-chemistry-topic-5-alkenes-interactive-course-banner.jpg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-5-formulae-equations-and-amounts-of-substance/calculations-with-solutions-and-gases/</loc>
		<lastmod>2026-06-02T10:32:51+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-1-atomic-structure-and-the-periodic-table/mass-spectrometry/</loc>
		<lastmod>2026-06-02T08:26:27+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-1-atomic-structure-and-the-periodic-table/ionisation-energy/</loc>
		<lastmod>2026-06-02T08:20:19+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-5-formulae-equations-and-amounts-of-substance/</loc>
		<lastmod>2026-06-02T07:08:33+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-3-redox-i/</loc>
		<lastmod>2026-06-02T06:10:20+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-4-inorganic-chemistry-and-the-periodic-table/</loc>
		<lastmod>2026-06-02T03:36:10+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-2-bonding-and-structure/</loc>
		<lastmod>2026-06-01T07:42:25+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel/topic-1-atomic-structure-and-the-periodic-table/</loc>
		<lastmod>2026-05-28T05:03:04+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-2-atomic-structure-and-the-periodic-table/</loc>
		<lastmod>2026-05-26T10:28:50+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-1-formulae-equations-and-amount-of-substance/calculations-with-solutions-and-gases/</loc>
		<lastmod>2026-05-26T05:09:50+00:00</lastmod>
		<image:image>
			<image:loc>https://www.onlinelearningsystem.net/xyz/wp-content/uploads/2026/05/Author-Profile.jpeg</image:loc>
		</image:image>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/revision-notes/a-level-chemistry/edexcel-international/topic-1-formulae-equations-and-amount-of-substance/</loc>
		<lastmod>2026-05-24T07:25:05+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/lost-password/</loc>
		<lastmod>2026-05-20T09:46:49+00:00</lastmod>
	</url>
	<url>
		<loc>https://www.onlinelearningsystem.net/xyz/thank-you-for-purchase-2/</loc>
		<lastmod>2026-05-14T17:24:59+00:00</lastmod>
	</url>
</urlset>
<!-- XML Sitemap generated by Rank Math SEO Plugin (c) Rank Math - rankmath.com -->