HOMOGENOUS MIXTURES:A mixture which has uniform composition and properties throughout AND THE COMPONENTS ARE THOROUGHLY MIXED. For example, air is a homogeneous mixture of gases.
HETEROGENOUS MIXTURES: A mixture is a combination of two or more pure substances in which the original substances retain their chemical properties AND THE COMPONENTS ARE NOT MIXED PROPERLY.
For example: SAND AND WATER , CHALK POWDER AND WATER
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