Cambridge IGCSE Chemistry (0620) Mark Scheme Decoder

Select a question type to see exactly what earns and loses marks, then use the Practice tab to write your answer and get instant auto-marked feedback.

Cambridge IGCSEChemistry0620

Mark Scheme Decoder

Pick a question type to see exactly what the examiner wants — then try a practice question and get instant auto-marked feedback.

Select question type

🎯

What the examiner actually wants

1 mark

One correct chemical fact, term, or name. Spelling of chemical names must be close enough to be unambiguous. Include units where required.

Mark point checklist

1Correct chemical term, formula, or fact stated
2Units included where required (e.g. mol/dm³, kJ/mol)

✅ Earns marks

  • →The catalyst is…
  • →The product is…
  • →The formula is…
  • →The charge on [ion] is…

❌ Loses marks

  • ✗Misspelled names that could mean a different substance
  • ✗Wrong formulae (e.g. NaOH₂ instead of NaOH)
  • ✗Missing units for quantitative answers

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