1. Changing States
3.5C

2. Changing States Vocabulary
gas
conductor
matter
heat
freezing
liquid
evaporating
temperature
insulator
solid
melting

3. Matter is anything that has mass and takes up space.

4. Solids Solids have a definite shape and volume. Solids have mass.
Solids take up space.

5. Liquids Liquids have a definite volume but no definite shape.
Liquids take the shape of their container.
Liquids have mass.
Liquids take up space.

6. Gasses Gasses have no definite shape or volume.
Gasses spread out to fill the entire space given.
Gasses have weight.
Gasses take up space.

7. What does it take for matter to move from one state to another?
States of Matter
What does it take for matter to move from one state to another?

8. Energy determines the state!
GASES
+ Energy
LIQUIDS
SOLIDS

9. Add or Subtract Energy. . .
When energy is added, particles move faster!
When energy is removed, particles move slower!

10. TEMPERATURE
Measure of the movement of molecules (tiny particles) in matter
Measured using a thermometer or temperature probe
Scientists use the Celsius scale to measure temperature

11. What will happen if heat is added? Why?
Here are some notes

12. Solid + Energy = ?
When energy is added to solids, they become liquids!
Examples?

13. Liquid + Energy = ?
When energy is added to liquids, they become gasses!
What examples can you think of?

14. Changing States State change Phase change Physical change
There are several names for matter changing states:
State change
Phase change
Physical change

15. Ice changes to water—water changes to ice, frozen water is still water

16. Water changes to steam, a gas, when it is heated to its boiling point, water vapor condenses to form a liquid

17. Changes in State (phase changes)
Melting - solid to liquid
Freezing – liquid to solid

18. Changes in State (phase changes)
Evaporating – liquid to gas
Condensing - gas to liquid

19. So, did we get something new?
Ice cream and melted ice cream?
Chocolate and melted chocolate?
Ice, water, and water vapor?
Steel and molten steel?