Question 19
You will need: safety glasses, test tubes, a test tube rack, water, hydrochloric acid, small pieces of a selection of metals such as magnesium, iron, copper, zinc.
Safety
Wear safety glasses. Remember to pay attention to hazard warning labels when you use chemicals.
Additional safety guidance: Work only with teacher supervision and the small quantities and dilute acid provided. Point tubes away from people, avoid overfilling and never seal reacting tubes. Only test a small gas sample as directed by your teacher, away from the gas generator.
Part 2: Reactions with acid
1. Place a small piece of each of the metals into a different test tube.
2. Take one tube at a time and add hydrochloric acid, so that the test tube is half full.
3. If you see bubbles given off, test for hydrogen gas.
4. Record your observations and findings in a table.
Safety
Wear safety glasses. Remember to pay attention to hazard warning labels when you use chemicals.
Additional safety guidance: Work only with teacher supervision and the small quantities and dilute acid provided. Point tubes away from people, avoid overfilling and never seal reacting tubes. Only test a small gas sample as directed by your teacher, away from the gas generator.
Part 2: Reactions with acid
1. Place a small piece of each of the metals into a different test tube.
2. Take one tube at a time and add hydrochloric acid, so that the test tube is half full.
3. If you see bubbles given off, test for hydrogen gas.
4. Record your observations and findings in a table.
