Question

what is difference between pure substance and mixture​

Answer 1

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1. Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances. 2. A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties (i.e., boiling point and melting point).

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Answer 2

pure substance

• a pure substance is one which is made up of only one kind of particles .
• these particles is may be atoms or molecules .
• all the elements and compounds are the pure substances .
• for example hydrogen , oxygen , calcium oxide , Silicon dioxide etc .

mixtures

• mixtures are the one which contain two or more different kind of particles .
• elements and compounds are not the mixtures of any atoms or molecules .
• most of the matter around us exist as mixture of two or more pure substances .
• for example: Petroleum , tap water , rocks etc .

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