Higher Chemistry: the free resources, and how the exam actually works

Higher Chemistry adds real organic chemistry and more demanding calculation on top of National 5's foundations, and rewards a learner who can move between naming a mechanism and calculating from it in the same answer.

• Qualifications Scotland's own past papers and marking instructions: free, official, and the only place to see exactly how a Higher-level answer is marked.
• Chemguide: free, explicitly written to cover Scottish Highers and Advanced Highers, genuinely one of the best free resources for organic mechanisms specifically.
• Royal Society of Chemistry education: free resources from chemistry's own professional body.
• PhET Interactive Simulations: free, University of Colorado Boulder, useful for visualising reaction rates, equilibrium and molecule structure.
• Khan Academy: free, non-profit, solid extra practice on calculation-heavy topics.

How Higher Chemistry is actually assessed, in plain terms: a written question paper alongside an assessed practical component, both feeding into the final grade (A to D). As at every level, exact structure is set by Qualifications Scotland (which replaced the SQA in February 2026), so the Higher Chemistry course page on its own site has the current, definitive version.

We've written more on what actually changes between National 5 and Higher, and how markers actually award marks is worth reading before your next past paper attempt.

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

Where free tools run out is watching your learner actually work through a multi-step calculation or mechanism and catching exactly where it goes wrong. If that's the gap, browse our Higher Chemistry tutors directly.