Metals and Acid
When a metal reacts with an acid, the same types of products are always formed.
Metal + Acid ➡️ Metal Salt + Hydrogen
Testing for Hydrogen Gas
Aim: To show that hydrogen gas is produced when a metal reacts with acid.
Equipment: A test tube, a boiling tube, Bunsen Burner, a wooden splint, a bottle of acid, a piece of metal, safety glasses.
Method:
1. Light your Bunsen burner.
2. Add your sample of metal to your test tube. Add 2 mL of acid.
3. Carefully invert the boiling tube above the test tube containing the metal and acid. (as shown in the diagram below.)
4. Hold the test tubes together for a few minutes, allowing time for the inverted boiling tube to fill with gas.
5. When you think the tube is full, your lab partner should light a wooden splint.
6. Carefully, but quickly, tilt the boiling tube full of gas upwards and insert the burning splint into the mouth of test tube.
Observations:
It made a high pitched pop noise and it was warm in the test tube.
Outline how you could tell a chemical reaction was occurring in the test tube...
Because of the fast reaction and that noise that happened...
Discussion...
Basically, it was a chemical reaction, that caused the noise due to the gas reacting with fire.
Conclusion...
It was a pretty cool experiment but the popping noise kept scaring people.
Some Videoes...
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