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Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.
The Advanced Extension Award was then withdrawn for all subjects except mathematics. [2] This came after the Joint Council for Qualifications (JCQ) decided that the new A* grade being offered at A level would overlap with the purpose of the AEA, rendering them unnecessary.
AQA also offers the AQA Baccalaureate, a qualification also intended for students in Year 12 and 13 and which includes the study of three A-Levels, an extended project and extra-curricular enrichment activities. [2] AQA is the largest examination board for GCSEs and GCE A Levels in England. [3] AQA administration office, Guildford
The A-level (Advanced Level) is a subject-based qualification conferred as part of the General Certificate of Education, as well as a school leaving qualification offered by the educational bodies in the United Kingdom and the educational authorities of British Crown dependencies to students completing secondary or pre-university education. [1]
Group 2: Humanities and Social Sciences; Group 3: Sciences; Group 4: Mathematics; Group 5: Creative and Vocational (Professional and Creative) The certificate is awarded to candidates who pass in seven IGCSE subjects — two Group 1 subjects, one subject from each of Groups 2–5, and a seventh subject which can be selected from any Group.
Until 2014, the Standard Grade section of the site had 12 subjects: Biology, History, Chemistry, Computing Studies, Maths, English, Modern Studies (a course exclusive to Scotland), French, Physical Education, Geography, and Physics. [9] The site was updated in 2014 to replace the Standard Grade section with National 4 and National 5 sections.
The BTEC is another Level 1/2 qualification available in the same territories as the GCSE, and is graded at 5 levels. At Level 2, comparable to A*, A, B, and C respectively are the Distinction*, Distinction, Merit, and Pass. A BTEC at Level 1 is simply marked as "Level 1", with no subdivision. Below that level, a U is awarded, as in GCSEs.
A recent paper argues for changes to some of the rules (sequence rules 1b and 2) to address certain molecules for which the correct descriptors were unclear. [8] However, a different problem remains: in rare cases, two different stereoisomers of the same molecule can have the same CIP descriptors, so the CIP system may not be able to ...