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4CH1IGCSE

Chemistry

28 topics · 4 specification chapters

4CH1 Topics

Frequency legend

High (≥14%)

Above avg (10 to 13%)

Average (<10%)

Prioritise These First

Highest-frequency topics (2018 to 2024)

These topics account for the majority of exam marks. Revise them first.

1

Chemical Formulae, Equations and Calculations17%

2

Acids, Alkalis and Titrations10%

3

Atomic Structure9%

4

Ionic Bonding9%

5

The Periodic Table8%