What this practice covers
These questions are drawn from past CIE 0620 Chemistry papers and filtered to solids, liquids and gases. You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
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What examiners see students get wrong here
These are the errors that cost marks on solids, liquids and gases, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying particles in a solid do not move. They vibrate about fixed positions.
- Saying the temperature rises while a substance is melting or boiling.
- Saying that the particles themselves expand when a gas is heated.
- Treating evaporation and boiling as the same thing.
- Reading the top of a heating curve as the melting point instead of reading the flat sections.
- Saying a gas is compressible because its particles are soft, rather than because there is space between them.
- Forgetting that freezing point and melting point are the same temperature.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Solids, liquids and gases revision notes.