Year 12 topic · full A-level standard · AQA + OCR A
A-level periodicity exam questions
Practise Periodicity at the level it appears in final A-level papers: trends and exceptions, ionisation-energy data, Period 3 melting points and structure, plus short candidate answers that are nearly right but still lose marks.
Generated Periodicity set
Some sets include student answers for you to mark as well as direct chemistry questions.
The board boundaries matter
AQA focuses its Periodicity section on block classification and Period 3 trends in atomic radius, first ionisation energy and melting point. OCR A goes further here: Periods 2 and 3 electron configurations, first and successive ionisation energies, the characteristic small decreases in first ionisation energy, giant metallic and giant covalent structures, and melting-point patterns across Periods 2 and 3. The generator keeps those scopes separate.
The candidate answers are deliberately plausible. Some contain one subtle chemical error or omit one link in the reasoning; some deserve full marks. You cannot assume every answer has been sabotaged.