National 5 Chemistry: the free resources, and how the exam actually works

National 5 Chemistry mixes genuine calculation (moles, equations, percentage yield) with practical technique and a fair amount to actually remember, reactions, tests, trends across the periodic table. Free, non-commercial help exists for all three.

• Qualifications Scotland's own past papers and marking instructions: free, no account needed, the only place to see exactly how a real answer is marked, not just whether the final number is right.
• Chemguide: free, written and maintained by a retired chemistry teacher, explicitly covers Scottish Highers and Advanced Highers alongside English A-level, genuinely useful for the bits a textbook explains too quickly.
• Royal Society of Chemistry education: free resources from chemistry's own professional body, including practicals, quizzes and videos.
• PhET Interactive Simulations: free, University of Colorado Boulder, particularly useful for visualising things like molecule building and reaction rates.
• Khan Academy: free, non-profit, solid for extra practice on mole calculations if that specific skill is the sticking point.

How National 5 Chemistry is actually assessed, in plain terms: a written question paper alongside an assessed practical component, both contributing to the final grade (A to D). Exact paper structure and how the practical is assessed are set by Qualifications Scotland (which replaced the SQA as Scotland's national awarding body in February 2026), so the National 5 Chemistry course page on its own site has the current, definitive version.

How markers actually award marks matters a lot here specifically: showing working in a calculation can earn method marks even with a small arithmetic slip, but only if the working is actually shown.

Our own Ziggy's Den has free-to-try National 5 Chemistry lessons and quizzes if you want some structure alongside the tools above.

Free tools explain the theory well, but they can't watch your learner's own working and tell them exactly where a calculation went wrong. If that's the gap, browse our National 5 Chemistry tutors directly.