Energy in Phase Changes

Question 1

Heat vs. Temp.

Answer 1

1. Heat is a form of energy
2. Temperature reflects the random motion of the particles in a substance

Question 2

How are temp. and heat related?

Answer 2

Heat is transferred btw two objects due to temperature differences till temp is equal

Question 3

Exothermic process (3)

Answer 3

Freezing, condensation, and deposition

Question 4

Endothermic process (3)

Answer 4

Melting, evaporation, and sublimation

Question 5

Heat of Fusion:

Answer 5

The amt. of heat required to change 1g of solid to a liquid with no temp. change

Question 6

Heat of Evaporation:

Answer 6

The amt. of heat required to change1g of liquid to it’s gas with no temp change