Maheswari

 Atom

An atom is the smallest part of everything.

Example: A hydrogen atom.

Atomic Structure

Atomic structure means how the atom is made.

Example: In an oxygen atom, protons and neutrons are in the middle, and electrons move around.

Mixture

Definition: A mixture is when two or more things are mixed but do not join together.

Examples:

1. Sand and water

2. Rice and dal

3. Nuts and raisins