12 papers, 2019–2025
Assesses the core content: every statement not in bold and without a ‘C’ reference. Questions may come from any topic area. Every Chemistry Paper 1 IGCSE question paper and mark scheme in the collection is listed below, from Edexcel. No sign-up is required.
Work through Paper 1 papers in timed conditions, then mark your own work against the official mark scheme before looking at any worked solution. Because every sitting of Paper 1 assesses the same specification content, the same question forms recur across years with different numbers and context - so a method you get right once will earn marks again.
Keep a record of which questions cost you marks and why: a gap in knowledge, an arithmetic slip, or running out of time. Each needs a different fix, and the pattern across several Paper 1 papers tells you which one is actually holding your grade down.