9620 · Oxford AQA International AS Level
Chemistry (9620) Exam Tips
In Oxford AQA International AS Level Chemistry, the difference between an A and a B grade often comes down to minor, highly preventable slip-ups. Year after year, examiners report that outstanding candidates lose marks not because they do not understand the concepts, but because …
Source: Oxford AQA
Papers
3
Total marks
220
Time limit
4h 30min
Grade scale
Additional note
Calculator policy
A scientific or graphical calculator is permitted. Graphical calculators must be in exam mode with all stored programs and data cleared before the exam; the calculator must not be able to retrieve stored text or formulae.
3
Papers
6
Strategies
5
Mistakes
- In Oxford AQA International AS Level Chemistry, the difference between an A and a B grade often comes down to minor, highly preventable slip-ups. Year after year, examiners report that outstanding candidates lose marks not because they do not understand the concepts, but because they fail to follow strict procedural rules. For example, in Time of Flight (TOF) mass spectrometry calculations, students routinely forget to convert atomic mass from grams per mole (g/mol) to kilograms per single ion. If you do not divide by Avogadro's constant and then divide by 1000, your subsequent calculations for velocity or drift tube length will yield heavily flawed values.
Tips are paraphrased for study purposes from exam structure data and marking patterns. Always verify against your official syllabus and mark scheme.