gasses

Question 1

Key points

Answer 1

Almost everything is made of particles.
Particles can be atoms, molecules, or ions.
Particles behave differently in solids, liquids, and gases.
The particle model explains the differences between solids, liquids, and gases.

Question 2

What is a particle?

Answer 2

A single piece of matter from an element or a compound, which is too small to be seen. Particles can be atoms, molecules or ions.