Are the crystals of salts really dry ? Write an activity to find it
CBSE Class 10
Class 10 Science
2016-10-18 09:45:19 UTC
Take few crystals of copper sulphate in a dry test tube.
Heat it for a few minutes.
The salt (crystals) turn white (in colour).
We notice water droplets on sides of the test tube.
This shows that crystals of salts are not really dry.
Add 2-3 drops of water on the sample of copper sulphate obtained after heating.
Result: The blue colour of copper sulphate is restored.