Give two differences between pure substances and mixture. Give one exa

1.	Give two differences between pure substances and mixture. Give one example of each.
Answer» (i) A pure substance is always a single substance (element or compound). A mixture has two or more constituents. (ii) A pure substance has always sharp melting or boiling point. A mixture does not have sharp melting or boiling point. Examples : Copper sulphate (Pure substance), Air (Mixture)

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Give two differences between pure substances and mixture. Give one example of each.

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