What this practice covers
These questions are drawn from past CIE 0654 Co-ordinated Sciences papers and filtered to the periodic table. 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 the periodic table, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying reactivity increases down Group VII.
- Saying reactivity decreases down Group I.
- Explaining a Group I trend correctly and then applying the same words to Group VII.
- Saying the halogens are monatomic.
- Writing LiBr₂ or Na₇Cl from the group numbers.
- Saying elements in a group are similar because they have the same number of shells. It is the outer electrons that matter.
- Saying transition elements are in Group I, or that Group I metals form coloured compounds.
- Answering "halogens" to a question about coloured compounds, when the elements rather than the compounds are the coloured ones.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: The Periodic Table revision notes.