chapter 7 (:

Firstly, we must know that matter is made up of particles( atoms/ molecules) and it exist as solid/ liquid/ gas. [ depends on the temperature/ melting points/ boiling points of the matter.]
Here are some properties of the three states:
[ SOLID]
-Definite shape/volume.
- Low compressibility.
- High density.
> strong intermolecular bonds.
> Packed closely in regular pattern.
> vibrates about fixed position.

[LIQUID]
-No definite shape but fixed volume.
-Low compressibility.
-High density.
>attractive force between molecules.
>randomly arranged in irregular position.
>move about within cinfined space.
* Liquid takes the shape of its container.

[GAS]
-No fixed shape/ volume.
-High compressibility.
-Low density.
>weak attractive force among molecules.
>move freely at high speed.