Question

What is a atom ? What is compound? And what is oxygen

Answer 1

Atom : an atom is the smallest particle that cannot be divisible.

Compound : the compound is a pure substance which is made up of more than one element.

Oxygen : oxygen is the only gas which is suitable to breathe for humans.

Answer 2

The smallest part into which an element can be divided is called atom.

Something that consists of two or more things combined together is called compound.