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