Question

chose and right the correct answer when the copper sulphate crystals are heated in a test tube, the colour of the crystals change from blue to white. but when white substance is cooled the, the colour changes to blue again what type of change take place on heating and cooling the crystals respectively? (a) physical,physical (b) physical, chemical (c) chemical, chemical (d) chemical, physical​

Answer 1

Answer:

b) physical, chemical

Explanation

The copper sulphate crystals CuSO4.5H2O contain 5 water molecules which are known as water of crystallization. When we heat the crystals, these water molecules are removed and the salt turns white. If we moisten the crystals again with water, the blue colour of the crystals reappear.

Answer 2

Answer:

both chemical it

Explanation:

characters of a chemical change includes

change in colour