Question

Mixture with different compositions and different properties at different locations in the mixture is called a:
A. Homogenous mixture
B. Heterogeneous mixture
C. Both A and B
D. None of the above

Answer 1

A mixture is a physical combination of two or more substances. In a mixture, an individual substance retains its identities. Depending on a uniform and different composition, the mixture is classified as a homogeneous and heterogeneous mixture.

Complete Step by step answer: In chemistry, a mixture can be defined as a physical combination of two or more substances. Components of the mixture are not chemically combined with each other.
Depending on the composition and properties of the mixture it can be classified in two main categories.
-Homogenous mixture
-Heterogeneous mixture

A homogenous mixture is a mixture in which the composition of mixing substances is uniform throughout the mixture.
The homogenous mixture usually consists of a single phase. It possesses the same properties throughout the mixture.
Eg. Mixture of salt and water, a mixture of sugar and water etc.
A heterogeneous mixture is a mixture in which the composition of mixing substances is non-uniform throughout the mixture.
A heterogeneous mixture usually consists of two or more phases. It posses different properties at different locations in the mixture
Eg. Mixture of sand and water, oil and water etc.
Thus, a mixture with different compositions and different properties at different locations in the mixture is called a heterogeneous mixture.

Hence, the correct option is (B) Heterogeneous.

Note: Homo stands for uniform and hetero stands for different. Due to different compositions, heterogeneous mixture shows different properties at different locations. While due to uniform composition homogeneous mixture shows similar properties throughout the mixture. We can distinguish components of mixing substances in a heterogeneous mixture by naked eyes. We cannot distinguish components of mixing substances in a homogenous mixture.