Question

Why do we call blood a heterogeneous mixture?, why air is a homogeneous mixture? and The Earth atmosphere is a heterogeneous mixture? ​

Answer 1

Blood is a heterogeneous mixture because the blood cells are physically separate from the blood plasma. The cells have different properties than the plasma. The cells can be separated from the plasma by centrifuging, which is a physical change.

Air is a homogeneous mixture of gases as it is primarily made up of nitrogen and oxygen. Its elements are not readily separated or distinguished from one another.

A heterogeneous mixture is the mixture which is made up of two or more substances in a undefined ration or proportion. The Earth's atmosphere is a heterogeneous mixture because density of various components of gases is different in Earth's atmosphere. ... So, the components of atmosphere are not equally distributed.

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