What this practice covers
These questions are drawn from past CIE 0620 Chemistry papers and filtered to ions and ionic bonds. 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 ions and ionic bonds, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying an ionic bond is the sharing of electrons. That is covalent bonding.
- Drawing a dot-and-cross diagram without brackets or without charges.
- Showing the sodium ion still holding its outer electron.
- Saying ionic compounds conduct because of delocalised electrons. They conduct because ions move.
- Saying solid sodium chloride conducts. It does not; the ions cannot move.
- Writing MgCl or AlO instead of balancing the charges to MgCl₂ and Al₂O₃.
- Calling an ionic compound a molecule, or using relative molecular mass for it.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Ions and ionic bonds revision notes.