Question 12
Sofia and Marcus each measured 10 cm³ of dilute hydrochloric acid into a test tube and measured the temperature. Then they each added an identical piece of magnesium ribbon to their test tube of acid. When the reaction stopped, they each measured the temperature again.
| Learner | Start temperature / °C | End temperature / °C |
|---|---:|---:|
| Sofia | 18 | 42 |
| Marcus | 21 | 45 |
Explain why it is a good idea to wear safety glasses whilst carrying out this investigation.
| Learner | Start temperature / °C | End temperature / °C |
|---|---:|---:|
| Sofia | 18 | 42 |
| Marcus | 21 | 45 |
Explain why it is a good idea to wear safety glasses whilst carrying out this investigation.
