2. SOLIDS:
Motion: Particles vibrate in place; particles move slowly
Spacing: Close together
Attraction: Strong  particles held tightly in place

3. Two Types of Solids
Crystalline: orderly, 3D arrangement in repeating pattern of rows
Ex: Iron, diamonds, ice
Usually harder solids
Amorphous: atoms/molecules arranged in no particular order
Ex: rubber, wax
Usually softer solids

4. LIQUIDS:
Motion: Particles slide past one another
Spacing: Further apart
Attraction: Moderate (but particles move fast enough to help overcome some of the attraction between them)

5. Properties of Liquids
Surface tension: molecules at the surface of a liquid are more attracted
Viscosity: resistance to flow
Higher viscosity  thicker, harder to pour
Ex: water vs honey
Video is 2:41 (no need to watch whole thing if short on time)

6. GASES:
Motion: Particles move quickly and randomly
Spacing: Particles very far apart
Attraction: Weak attraction between particles
No definite SHAPE or VOLUME (both can change)

7. PLASMAS: No definite shape or volume
Made of broken apart atoms (charged particles)
Conduct electricity
Very hot!
Increase heat
1st video is 3:32
2nd video 2:40
Under normal conditions electrons stay attached to the atom. Under extreme conditions (such as super high temps), electrons fall off, which is why plasmas conduct electricity.

8. PLASMAS: Make up 99 percent of known matter in the universe!!!
PLASMAS:
Make up 99 percent of known matter in the universe!!!
Examples: sun, lightning, fire, aurora borealis, fluorescent lights
1st video is 3:32
2nd video 2:40