Question

1. What is meant by a pure
substance?
2. List the points of differences
between homogeneous and
heterogeneous mixtures.​

Answer 1

Answer:

A pure substance is a substance consisting of a single type of particles i.e., all constituent particles of the substance have the same chemical properties. For example, salt, sugar, water are pure substances. A colloid is a heterogeneous mixture. ... This means that colloids are quite stable.

Answer 2

Answer:

1. What is meant by a pure substance?

Answer-Properties of Pure Substances. Pure Substance. A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.

2. List the points of differences between homogeneous and heterogeneous mixtures.

Answer-List the points of differences between homogeneous and heterogeneous mixtures.

Homogenous Heterogeneous

mixture Mixture

They have uniform They have non- compositions . uniform compositions

The components of They have no

. visible

boundaries of

between the

constituents.

homogeneous mixtures

are not physically

distinct.