7. What happens when copper sulphate crystals are heated? What change in colour do you observed ?what happens when they are moistened again?
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Explanation:
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.
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Answer:
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.
Explanation:
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