Matter and Energy Flashcards
1
Q
Matter
A
anything that takes up space and has mass
2
Q
Solid Phase
A
- orderly arrangement
- particles are. in fixed positions
- tightly packed; crystalline,
- particles vibrate; slight movement;
- definite volume; definite shape
3
Q
Liquid Phase
A
- some disorder
- particles are free to move relative to each other
- move faster
- definite volume; no definite shape/indefinite/negligible
4
Q
Gas Phase
A
- total disorder - entropy;
- much empty space
- particles have complete freedom of motion/move fastest
- particles are far apart; ‘
- no definite volume or definite shape
5
Q
Phase Changes
A
changes in temp and or pressure result in changes of phases
6
Q
temparature
A
affect how fast particles move
7
Q
Pressure
A
affects how packed the particles are
8
Q
Endothermic
A
process that requires absorption of heat
9
Q
Exothermic
A
process that involves the release of heat
10
Q
Melting
A
solid to a liquid; endothermic change (absorption of heat)
11
Q
Vaporization/Evaporation
A
liquid to gas; endothermic (absorption of heat)
12
Q
Sublimation
A
solid to gas; skips liquid phase; endothermic (heat is absorbed ); ex. dry ice + iodide
13
Q
Condensation
A
gas to liquid; exothermic (release of heat)
14
Q
Freezing
A
liquid to solid; exothermic (release of heat)
15
Q
Deposition
A
gas to solid; exothermic (release of heat)
