1. QQ: Make a table with 3 columns labeled: solid, liquid, and gas
QQ: Make a table with 3 columns labeled: solid, liquid, and gas. Write the statements below in one or more of the 3 columns.
My particles move.
I have no definite volume
or shape.
3) My particles move the slowest.
4) I have the most energy
5) I have definite shape and volume.
6) I take the shape of my container.
7) I have a definite volume but not definite shape.

2. Today’s Objective:
I can use a phase change graph to describe how matter changes.

3. So What's So Special About Oobleck?

4. Phase Change:
Going from one state of matter to another
Caused by change in energy

5. Phase Changes are Physical Changes.
They are reversible.
Chemical Reactions are not.
Gas
Liquid
Solid

6. * The substance is warmer
(heat was absorbed by it)
* The surroundings are cooler (heat left for the substance)

7. Exothermic: The energy “exits” the substance
The substance is cooler
(the heat left it)
* The surroundings are warmer (that’s where the heat went)

8. Gas
Condensation
Melting
Solid
Liquid
Freezing

9. Phase change from gas to liquid
Condensation:
Phase change from gas to liquid
Exothermic: Heat leaves the water

10. Gas
Condensation
Vaporization
Melting
Solid
Liquid
Freezing

11. Vaporization:
* Change from liquid to gas
* Endothermic (system absorbs the heat energy to change)
Boiling
Evaporation: at surface
& below boiling point

12. Gas Sublimation Solid Liquid Condensation Vaporization Melting
Freezing

13. (never becomes a liquid)
Sublimation:
Phase change from solid to gas
(never becomes a liquid)
Endothermic: Heat enters system

14. Gas Deposition Solid Liquid Condensation Vaporization Sublimation
Melting
Solid
Liquid
Freezing

15. (never becomes a liquid)
Deposition:
phase change from gas to solid
(never becomes a liquid)
Exothermic: Heat leaves the vapor

16. What happens to the temperature here?
Temperature is constant during phase change.