Name the elements present in nitric acid (${\mathrm{HNO}}_3$).

Write the names of the elements present in the following compound.

Ammonia

Name the elements present in the following compound:

Sugar

State whether the following statements are true or false. If false rewrite the correct form of statements.

A mixture is a pure substance.

State whether the following statements are true or false. If false rewrite the correct form of statements.

Common salt is an element.

State whether the following statements are true or false. If false rewrite the correct form of statements.

The symbol of nitrogen is $\mathrm{N}$

State whether the following statements are true or false. If false rewrite the correct form of statements.

Sugar is a compound made up of three elements, i.e, carbon, hydrogen and oxygen.

State whether the following statements are true or false. If false rewrite the correct form of statements.

${\mathrm{H}}_2$ represents two molecules of hydrogen.