1. If a gallon of milk and a cup of milk are both at 8°C, the _____ of the gallon is higher.

potential energy
heat content
temperature
kinetic energy

2. As the vibration of molecules increases, the _____ of the substance increases.

temperature
internal energy
kinetic energy
all of the above

3. An indirect measurement of the speed of molecules is _____.

heat flow
temperature
friction
energy

4.How many calories are absorbed by a copper spoon with a mass of 200 grams as it changes from 28°C to 33°C?

0.00027
3
90
13,000

5. 5.25 calories are absorbed by an iron nail. How many joules is this?

1.07
9.43
12.6
21.9

6. The specific heat capacity of aluminum is 0.22 cal/g°C. How much energy needs to flow into 20.0 grams of aluminum to change its temperature by 15°C?

0.017 cal
0.29 cal
66 cal
1363 cal