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In chemistry a substances is a pure form of matter which compose a rightful proportion of physical or chemical properties which is chemically combined together
added by 1001277811 123 days ago 1    0

physical & chemical properties with constant chemical composition is called substance.
Or,
Pure form of matter is called substance .
Is may be element or compound.
added by Anonymous 662 days ago 1    0

WHAT IS SUBSTANCE IN CHEMISTRY
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Pure form of matter in which each portion has same physical & chemical properties with constant chemical composition is called substance.
Or,
Pure form of matter is called substance .
Is may be element or compound.
It has definite melting point or boiling point.

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