Question

URGENT: How is a pure substance different from a mixture?

Answer 1

Answer: Option (B) is the correct answer.

Explanation:

A pure substance is defined as the substance that contains either same or different type of atoms that are chemically combined to each other in a fixed ratio by mass.

For example, both $Cl_{2}$ and $MgSO_{4}$ are pure substances.

A pure substance can only be separated by chemical means.

Whereas a mixture is defined as the substance that contains two or more different number of substances that are physically mixed together.

For example, salt in water is a mixture.

In a mixture, solute particles can be either evenly or unevenly distributed in the solvent.

A mixture will always be separated by only physical means.

Thus, we can conclude that a pure substance different from a mixture as mixtures are made up of more than one component.

Answer 2

Answer:

Option b

Explanation:

Took test