A student heated different masses of copper powder in open crucibles to react with oxygen from the air to produce copper oxide. The results from their investigation are shown in Table 1.
Table 1
| Experiment | Mass of copper used / g | Mass of copper oxide formed / g | Mass of oxygen reacted / g |
|---|---|---|---|
| 1 | 0.40 | 0.50 | 0.10 |
| 2 | 0.80 | 1.00 | 0.20 |
| 3 | 1.20 | 1.50 | 0.30 |
| 4 | 1.60 | 2.00 | 0.40 |
| 5 | 2.00 | 2.15 | 0.15 |
| 6 | 2.40 | 3.00 | 0.60 |
Draw a graph of the mass of oxygen reacted against the mass of copper used.
258 exam-style questions on Edexcel GCSE Chemistry Calculations involving masses. Each one has a worked solution and a mark scheme showing where the marks go.