A2 Chemistry revisionKnowledge needed from ASKnowledge needed from AS
For Rings, Polymers & Analysis:
• Naming compounds• Types of formula:
• empirical and molecular• skeletal• structural and displayed
• Isomers: • structural• E/Z
• Formula determination from percentages by mass
• Analysing IR and mass spectrometry
• Curly arrows and mechanisms!
For Equilibria, Energetics & Elements:
• Writing equations:• overall• ionic• redox (full and half equations)
• Determination of the mole:• from mass• from gas volumes• from solutions
• Percentage yield• Use of a scientific calculator,
especially working with powers of 10
Weightings: Theory papers
• AO1: • Recall• Knowledge and understanding
• AO2:• Application• Unfamiliar situations
(AO = assessment objective)
Preparing for A2 units• Strategies
• More than just learning the course content• Work on understanding the principles• Practice with application-type questions• Practice writing short, concise answers
Examples from EEE
Note: Reaction mechanisms do come up, and they can be tricky. BUT think exam tactics:• It’s likely to be 2 or 3 marks on the whole paper (100 marks)• 1 of those marks will be for filling in the left hand side of the rate determining
step…• … which you can get from the rate equation (if it’s in the rate equation, it’s in the
RDS).• So write that down and move on!!
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