KS3 Chemistry: Chemical Reactions — Challenge

KS3 Chemistry: Chemical Reactions — Challenge is a greater-depth stretch activity book for Key Stage 3 chemistry, mapped to the DfE National Curriculum. Five demanding challenges push confident learners through complete and incomplete combustion and oxidation, the products of acid reactions with metals, carbonates and oxides and the salts each acid makes, predicting displacement from the reactivity series including metals below hydrogen, thermal decomposition of metal carbonates, and conservation of mass in open and sealed systems with careful calculations. Challenges 1–4 hold around twenty-four auto-marked questions; Challenge 5 is an open reasoning and proof task — a sealed-flask mass calculation, a displacement prediction and an explanation of a burning candle on a balance — with a full worked answer key. Includes teacher, parent and pupil notes and is fully SEND-friendly with high-contrast and large-text modes.