A student is given a sample of a metal carbonate. When the metal carbonate is heated it decomposes to produce a metal oxide and carbon dioxide.
Describe a method the student could use to show that the mass of the solid decreases when the metal carbonate is heated, and to determine the mass of carbon dioxide given off.
Your method must give valid results.
40 exam-style questions on AQA GCSE Chemistry 3.1 Chemical measurements, conservation of mass and the quantitative interpretation of chemical equations, covering 3.1.1 Conservation of mass and balanced chemical equations, 3.1.2 Relative formula mass, 3.1.3 Mass changes when a reactant or product is a gas, and 3.1.4 Chemical measurements. Each one has a worked solution and a mark scheme showing where the marks go.