1. Notes
Section 2.2: States of Matter
Matter and Energy

2. What are the 4 states of Matter?
Solid
Liquid
Gas
Plasma

3. The 3 States of Matter: Characteristics

4. How do you change a state of matter?

5. Melting
The process by which a solid becomes a liquid.

6. Molecular Movement of Melting
Particles are vibrating
Particles break loose and slide past one another.
SOLID
LIQUID
Heat gives particles ENERGY

7. Melting Point
The lowest temperature at which a substance begins to melt.

8. Melting Points Nitrogen -345.82 F Oxygen -361.12 F Iron 2795.0 F
Carbon F
Helium F
Sodium
207.9 F

9. Freezing
The process by which a liquid becomes a solid.

10. Molecular Movement of Freezing
LIQUID
SOLID
The heat leaves…and the energy from the particles decreases…creating a solid

11. Are these items frozen?

12. Freezing Point
The temperature at which a specific liquid becomes a solid.

13. Time to Think!
What is the relationship between a substance’s melting point and freezing point?
They are the same temperature!

14. Evaporation
The process by which a liquid becomes a gas.

15. Molecular Movement of Evaporation
…and get a gas
Add heat to a liquid…

16. Word Study
The root of the word evaporation is ____________, a Latin word meaning _____________________.
vapor
steam

17. Sublimation
The process by which a solid changes directly to a gas.

18. Boiling The process by which a liquid becomes a gas and produces
bubbles.

19. Molecular Movement of Boiling
Why does the liquid in the first picture evaporate when no heat is added?

20. Boiling Point
The temperature at which a substance changes from its liquid state to its gas state.

21. Condensation
The process by which a gas changes its state to become a liquid.
Beads of water that have condensed from the surrounding air.

22. Molecular Movement of Condensation
The heat leaves… and the energy from the particles decreases…creating a liquid
GAS
LIQUID

23. Word Study
The root of the word condensation is ______________, which comes from a Latin word meaning ____________________.
condense
to thicken

24. 02 02
Bullet Point
Sub Bullet

25. 03

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