A student heats a sample of copper(II) carbonate in a crucible. The student records the mass of the solid remaining inside the crucible every minute.
| Time / minutes | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
|---|---|---|---|---|---|---|---|---|
| Mass of solid remaining / g | 6.0 | 5.1 | 4.4 | 4.0 | 3.9 | 3.9 | 3.9 | 3.9 |
Explain the trends shown by the data in the table.
230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.