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 RPA

[3]

Examples from RPA

Examples from RPA

Examples from RPA

Examples from RPA

Examples from RPA

Examples from RPA

Examples from EEE

Examples from EEE

Examples from EEE

Examples from EEE

Examples from EEE

Examples from EEE

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!!

Examples from EEE

Examples from EEE

Examples from EEE

Examples from EEE

Examples from EEE

Examples from EEE

Examples from EEE

Examples from EEE

Examples from EEE

Messages from the examiners about Equilibria,

Energetics and Elements:Make sure you work on:

• Application of knowledge and understanding.• Writing ionic and redox equations.• Writing ionic equations.• Knowing what to expect! (By doing lots of past questions.)