Question

Write an activity to show how crystals of copper sulphate are prepared? for class 7​

Answer 1

Explanation:

⭐ Preparation of Crystals of Copper sulphate⭐

⚡ Crystals of copper sulphate are prepared by the method of crystallization. It is an example of physical change. The process is as follows:

⚡ (1)A cupful of water is taken in a beaker and a few drops of dilute sulphuric acid are added in it.

⚡ (2)The water is then heated and when it starts boiling, copper sulphate powder is added slowly with stirring.

⚡ (3)Copper sulphate powder is added continuously till no more powder can be dissolved.

⚡(4)Then solution is filtered and allowed to cool down.

⚡(5)Do not disturb the solution, when it is cooling.

⚡(6)Crystals of copper sulphate slowly form at the bottom of the beaker.

Answer 2

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1. Take a cupful of water in a beaker and add a few drops of dilute sulphuric acid.

2. Heat the water.

3. When it starts boiling, add copper

sulphate powder slowly while stirring continuously.

4. Continue adding copper sulphate powder till no more powder can be dissolved.

5. Filter the solution.

6. Allow it to cool. Do not disturb the solution when it is cooling.

7. Crystals of copper sulphate will be seen at the bottom of the beaker.

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