1. Changing States Today’s Goal:
To understand and identify the three states of water: solid, liquid, and gas.
To learn how water molecules can change between these three states.

2. Changing States
Water is made up of molecules. Molecules are tiny (microscopic) particles.

3. Changing States A water molecule is made up of three atoms.
2 Hydrogen (H) atoms
&
1 Oxygen (O) atoms

4. Changing States
Water covers 75% of the Earth.

5. Changing States
Water can exist in three states
Solid
Liquid
Gas

6. Changing States
The energy from the sun causes water to evaporate into a gas.
Boiling water on the stove can also cause water to change from a liquid to a gas.

7. Changing States
Melting ice cubes is an example of water changing from a solid to a liquid.

8. Changing States
Condensation is when water changes from a gas to a liquid.

9. Changing States
Water freezes as it changes from a liquid to a solid.

10. Changing States
Water becomes frost when it changes from a gas to a solid.

11. Changing States
The States of Matter