You are required to write two posts: - One post initiated (started) by you, where you describe how you prepare for tests. End your post with a question for your classmates. -
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The process of deriving large crystals of pure substances from their solutions is known as crystallisation. It is a physical change. Crystals of salt are obtained by the evaporation of sea water. ... This mixture when filtered and allowed to cool produces crystals of copper sulphate.
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Is it a chemistry question..................
mohamedaymen2072002:
its a cs qustion
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