A

B

C

D

40 kJ

20 kJ

80 kJ

60 kJ

A

B

C

D

Positive

Negative

Endothermic; light energy is absorbed.

Endothermic; light energy is released.

Exothermic; light energy is absorbed.

Exothermic; light energy is released.

electrolyste

catalyst

marinate

enzymatic browning

activation energy

nomenclature

oxidase

catalyst

A

B

D

E

Cookies

More energy

Catalyst

Changing the temperature

B & C

C & D 

E & C

A & D 

heat of deposition

heat of fusion

heat of reaction

heat of vaporization

Temperature

Adding a catalyst

Concentration

The weather

Option 3

Option 2

Option 1

calorie

heat

joule

watt

True

False

are always unstable.

exist only below a certain maximum temperature.

collide with each other with enough energy to break chemical bonds and arrange to form new products.

are moving so fast that the chance of interaction is very small.

A catalyst increases the activation energy.

A catalyst decreases the activation energy.

a reaction will occur only if the collision geometry is correct

a reaction will not occur if the collision occurs with energy that is less than the activation energy

a reaction will occur if the reactants DO NOT collide

frequency of collisions will increase with increasing temperature

methane gas because gases are more reactive than solids and liquids

salt because solids are more reactive than liquids or gases

water because liquids are more reactive than solids and gases

all of these will react at the same rate