Energy

Question 1

Temperature

Answer 1

the measure of the average kinetic energy of a substances particles

Question 2

Heat

Answer 2

the amount of energy transferred from one substance to another

Question 3

Absolute Zero

Answer 3

temperature at which all molecular motion stops

Question 4

The two formulas for Celsius and Kelvin

Answer 4

K = C + 273
C = K - 273

Question 5

fixed points for boiling and freezing point

Answer 5

boiling point: 373 K
freezing point: 273 K

Question 6

Heating and Cooling Curves

Answer 6

diagrams that represent a substance being heated or cooled at a constant rate

Question 7

melting point

Answer 7

temp at which solid and liquid phases exist in equilibrium (same as the freezing point)

Question 8

boiling point

Answer 8

temp at which liquid and gas phases exist in equilibrium (same as the condensation point)

Question 9

kinetic energy

Answer 9

energy of motion; increases as temp increases

Question 10

potential energy

Answer 10

stored energy in bonds; increases as the distance between the molecules increases

Question 11

heat of fusion

Answer 11

amount of heat to melt a substance (S->L)

Question 12

Heat of Vaporization

Answer 12

amount of heat to vaporize a substance (L -> G)

Question 13

Solid

Answer 13

phase below it’s freezing/melting point

Question 14

Liquid

Answer 14

phase between its freezing point and boiling point

Question 15

Gas

Answer 15

phase above it’s boiling point and condensation point

Question 16

Calorimetry

Answer 16

study of heat and it’s measurements

Question 17

Specific Heat

Answer 17

amount of heat energy in joules required to change the temp of 1 gram at a particular substance by 1 degree

Question 18

Heat Of Fusion

Answer 18

amount of heat required to melt 1 gram of a substance

Question 19

Heat Of Vaporization

Answer 19

amount of heat required to vaporize 1 gram of a substance

Question 20

Direction of heat flow

Answer 20

from a higher temp to a lower temp