Chapter 3

Question 0

change in 9*F to change in *C

Answer 0

Change in 5C is equivalent to change in 9F

Question 1

Absolute zero

Answer 1

No molecular motion

Question 2

C* to F*

Answer 2

F= 9F/5C (#C) +32

Question 3

*F to *C

Answer 3

C= 5C/9F (#F -32)

Question 4

Exothermic energy transfer

Answer 4

Heat leaves system

Question 5

Endothermic energy transfer

Answer 5

Heat enters the system

Question 6

Is blowing up TNT exothermic or endothermic

Answer 6

Exothermic

Question 7

Exothermic or endothermic?

Sweat evaporating when the body is the system?

Answer 7

Exothermic

Question 8

Exothermic or endothermic?

Sweat evaporating when the sweat is the system?

Answer 8

Endothermic

Question 9

What is heat capacity?

Answer 9

The amount of E needed to raise the temperature of a substance

Question 10

1 calorie =______ Joules

Answer 10

4.184

Question 11

The smaller the heat capacity is, the __________ it is to heat it up. I

Answer 11

Easier

Question 12

1 Calorie =__________ calories

Answer 12

1000

Question 13

Exothermic or endothermic?

Change of Q of a system <0

Answer 13

Exothermic

Question 14

Exothermic or endothermic?

Change of Q of a system > 0

Answer 14

Endothermic

Question 15

Q represents

Answer 15

Heat

Question 16

M represents

Answer 16

Mass

Question 17

C represents

Answer 17

Heat capacity

Question 18

Triangle T represents

Answer 18

Chang in Temp (final minus initial)

Question 19

What equation is used for E and Heat Capacity equations?

Answer 19

Q=MCAT

Question 20

Physical or chemical?

Copper turning green when exposed to air.

Answer 20

Chemical

Question 21

Physical or chemical?

Car’s paint fading.

Answer 21

Chemical

Question 22

Physical or chemical?

Gasoline evaporating.

Answer 22

Physical

Question 23

Physical or chemical?

Rusting of iron

Answer 23

Chemical

Question 24

Physical or chemical? | Evaporation of fingernail polish remover

Answer 24

Physical

Question 25

Physical or chemical? | Burning of coal

Answer 25

Chemical

Question 26

Physical or chemical? | Fading of carpet

Answer 26

Chemical

Question 27

Exothermic or endothermic? | Wood burning in a fire.

Answer 27

Exothermic

Question 28

Exothermic or endothermic? | Ice melting

Answer 28

Endothermic

Question 29

Physical or chemical? | Jewelry being scratched

Answer 29

Physical

Question 30

Physical or chemical? | Sulfuric acid burning skin

Answer 30

Chemical

Question 31

Physical or chemical? | Hydrogen peroxide bleaching hair

Answer 31

Chemical

Question 32

Physical or chemical? | Density relative to other elements

Answer 32

Physical

Question 33

Physical or chemical? | Explosion of gunpowder

Answer 33

Chemical

Question 34

Physical or chemical? | Melting gold

Answer 34

Physical

Question 35

Physical or chemical? | Bubbling when two elements are mixed

Answer 35

Chemical

Question 36

Physical or chemical? | Bubbling when boiling water

Answer 36

Physical