Catalyst Revision

Free chemistry revision for National 5 and Higher

Start with free revision games, guides and sample questions, written by a practising chemistry teacher in Scotland. When your child is ready for exam practice, our practice papers are here too.

National 5 Higher

Choose your course

Everything for each course is in one place: free resources first, then practice papers.

When you're ready: practice papers

Our paid papers are built around the questions pupils find hardest, not the ones that are easiest to write.

  • Exam-style questions

    Original questions written to match the style and difficulty of the real exam, grouped by topic so revision can be targeted.

  • Full worked answers

    Every answer shows the working and where the marks are won or lost, so pupils can check their own work without waiting for a teacher.

  • Ready to print

    Packs are PDFs. Use them on screen or print copies for your household as often as you like.

How buying works

  1. Choose a paperPick a single paper or the complete pack for your child's course.
  2. Pay securelyCheckout is handled by Payhip. Pay by card or PayPal; we never see your card details.
  3. Download straight awayYour download link appears on screen and arrives by email.
National 5 papers Higher papers

Questions parents ask

Which courses do the packs cover?

National 5 Chemistry and Higher Chemistry, following the current Scottish course specifications. Each pack says exactly which areas it covers.

Are these official exam materials?

No. Catalyst Revision is independent. The questions are original, written to match the style of the exam, and are not affiliated with or endorsed by Qualifications Scotland.

Who writes them?

A chemistry teacher working in a Scottish secondary school, who writes and checks every question and answer.

Can I share a pack?

Each purchase is for use within your own household. If you're a tutor or teacher and want to use packs with several pupils, email us about a tutor licence.

What if the pack isn't right for us?

See our refund policy. If a file won't open or you bought the wrong pack by mistake, we'll sort it out.