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91¶¶Òõ

Last updated

11 August 2026

docx, 39.67 KB
docx, 39.67 KB

GCSE Chemistry worksheet on mass changes in gases, covering conservation of mass, thermal decomposition, open and closed systems, and mass calculations involving gases. Students answer structured questions on reactions involving copper carbonate, zinc carbonate, magnesium and hydrochloric acid, rusting, evaporation and calcium carbonate, including explaining why measured mass can change when gases enter or leave a system. Suitable for KS4 / GCSE Chemistry lesson practice, homework, retrieval or revision. Includes the questions-only worksheet with space for students to show their working.

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