Question

Which substance it is when a white powder is added with water change to blue crystal

Answer 1

Explanation:

When a blue crystal is heated in a test tube, it becomes a white ... On adding water anhydrous copper sulphate changes to hydrated copper sulphate. It is a reversible chemical change. Precautions: Keep the mouth of the test tube away from your face and also from other classmates.

Answer 2

Explanation:

on adding water anhydrous copper sulphate changes to hydrate copper sulphate. It is reversible chemical change. Precautions:keep the mouth of the test tube away from your face and also from others classmates