1. POS Key Concepts: K2c: Particle Model of matter Change of state
Describe the effect of heat on the motion of particles; and explain changes of state, using the particle model of matter

2. Frozen koosh
heat and temperature (particles closer together, contract)
nitrogen cooled koosh ball

3. States of matter https://www.youtube.com/watch?v=gez2rmeCpfE
Dry ice cool stuff
Nitrogen cool stuff

4. Unit C: Heat and Temperature
Topic 3: The Particle Model of Matter, Temperature, and Thermal Energy

5. The Particle Model of Matter
1 All matter is made up of particles 2 Particles are always in motion (even in solids, they vibrate) 3 Particles have attractions between them 4 Particles have spaces between them

6. Solid, liquid, gas

7. Activity pg 202 Name the state(s) in which a material
Has a fixed shape
Takes the shape of its container
Always fills whatever container it is in

8. Pg 202 Name the state(s) in which the particles are
Far apart from each other
Very close together
Relatively close together
Free to move around
Very free to move around
Held in fixed positions

9. Temperature is
A measurement of the average speed of particle motion (kinetic energy) in a substance…which is thermal energy
Talia: how do icebergs float
Rhiannon: how do you make liquid nitrogen

10. *melting and boiling points

11. As temperature increases…
Particles move apart
Speed increases
Energy increases
Volume increases (exception: ice) *expansion

12. As temperature decreases…
Particles move closer together
Speed decreases
Energy decreases
Volume decreases *contraction

13. As temperature changes, a phase change occurs

14. Phase changes

15. Phase Change State Thermal Energy +/- To up/down Effect on particles
Evaporation
Liquid to gas +E
To increases
Move faster
More space
expansion

16. Assignment Read States of Matter info sheet Review Q’s T3,Wrap up T1-3
Pg 208#1,4
Pg 209 #1,2,4,6,9
Hidden Heat worksheet
Learn the Lingo worksheet