2. Particle Arrangement
September 20, 2010

3. Opening

4. Background Information
A particle is the simplest part that identifies a substance
for atoms this particle is an element
for compounds this particle is a molecule

5. Particle Chart FLU IDS Solid: Table Liquid: My Coffee
Gas: Air in the room
Observations
billions of molecules packed tightly together
Billions of molecules with only a little more space between particles
Still billions of molecules but have more space
Size & Arrangement
Movement
They move but can only vibrate in place; can’t move around each other
FLU
Can slide past each other
IDS
Bounce around the container

6. INM: Why do liquids flow?
A The particles are broadly separated and standing still. B The particles are tightly packed and constantly vibrating. C The particles are loosely arranged and sliding past one another D The particles are widely dispersed and in constant, random motion.

7. INM
What is the difference between the particles in a gas compared to the particles in a liquid?
F less massive
G more massive
H closer together
J farther apart

8. GP: What type of matter does this describe? Why?
1) The particles are tightly packed and constantly vibrating.
GP: Which description describes a gas? Why?
The particles are loosely arranged and sliding past one another
The particles are widely dispersed and in constant, random motion.

9. GP: Why do gases flow?
A The particles are broadly separated and standing still. B The particles are tightly packed and constantly vibrating. C The particles are loosely arranged and sliding past one another D The particles are widely dispersed and in constant, random motion.

10. What is the difference between the particles in a solid compared to the particles in a liquid?
F less massive
G more massive
H closer together
J farther apart

11. Notecards
Student 1
Student 2
Student 3

12. Example
What state of matter?
How are the particles arranged?
Do they “flow”?
What class of matter is it?