What this practice covers
These questions are drawn from past CIE 0625 Physics papers and filtered to the nuclear model of the atom. 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.
Start practising practice questions →
What examiners see students get wrong here
These are the errors that cost marks on the nuclear model of the atom, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying the electrons are in the nucleus, or that neutrons are charged.
- Saying isotopes have different numbers of protons.
- Saying isotopes react differently in chemical reactions.
- Giving the number of neutrons as the nucleon number, rather than A − Z.
- Saying most alpha particles were deflected in Rutherford's experiment; most passed straight through.
- Concluding from a single observation what needs all three.
- Saying an ion has a different number of protons from its atom.
- Failing to balance both numbers in a nuclear equation.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: The nuclear model of the atom revision notes.