Chapter Name: Metals and Non-Metals
Activity Name: Reaction with Acids in Metals and Non-Metals
In this experiment, we will investigate the reactions of different samples (metals and non-metals) with both dilute hydrochloric acid and sulfuric acid. We will observe the reactions and check for the liberation of hydrogen gas. The presence of a pop sound with a burning match stick will indicate the release of hydrogen gas.
- Test tubes
- Dilute hydrochloric acid
- Concentrated hydrochloric acid
- Sulfuric acid
- Samples of various metals and non-metals (as given in Table 8)
- Burning match stick
Step by Step Procedure:
- Take the samples of metals and non-metals given in Table 8 and place them in separate test tubes.
- Add 5ml of dilute hydrochloric acid to each test tube using a dropper.
- Observe the reactions. If there is no reaction, gently heat the test tubes.
- If there is still no reaction, add 5 drops of concentrated hydrochloric acid to each test tube.
- Bring a burning match stick near the mouth of the test tube and observe what happens.
- Record your observations in Table 8.
- Repeat the same experiment with sulfuric acid and record the observations in Table 8.
Record the observations of each sample in Table 8. Note down whether there was a reaction with dilute hydrochloric acid, any change after adding concentrated hydrochloric acid, and the presence of a pop sound when a burning match stick is brought near the mouth of the test tube.
Note down your observation in table format:
- Handle acids with care and wear appropriate safety equipment like gloves and goggles.
- When heating the test tubes, do it gently and ensure proper ventilation.
- Use a dropper to add the acids and handle it with care to avoid spills.
- Take necessary precautions while handling burning match sticks.
Lesson Learnt from Experiment:
Through this experiment, we will learn that some metals react with dilute hydrochloric acid and sulfuric acid, liberating hydrogen gas. On the other hand, non-metals usually do not react with acids and do not release hydrogen gas.
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