1. Energy changes occur as *

a.heat transfer
b.work
c.power
d.a combination of heat transfer and work

2.When heat energy is absorbed from surroundings *

a.it is an exothermic process
b.it is an endothermic process
c.a chemical change must occur
d.it feels warm to the touch

3.How does heat energy spontaneously move? *

a.heat does not move unless work is done
b.heat moves from an object of lower temperature to an object of c.higher temperature
d.heat moves from an object of higher temperature to an object of lower temperature
e.heat moves in the direction of the gravitational force

4. 1 Calorie is equal to (mark all that apply) *

a.1,000 kilocalories
b.1 kilocalorie
c.1,000 calories

5.Heat capacity depends on *

a.pressure
b.mass
c.density
d.joules

6. 1 calorie is equal to *

a.4.184 J
b.1,000 J
c.6.02x10²³ J
d.8.314 J

7. Condensation is *

a.a chemical exothermic process
b.a physical exothermic process
c.a chemical endothermic process

8. Look at the graph below. What kind of reaction is being represented?

a.endothermic reaction
b.exothermic reaction
c.neutralization reaction
d.single replacement reaction



9. When 435 J of heat is added to 3.4 g of olive oil at 21°C, the temperature increases to 85°C. What is the specific heat of olive oil? Show your work for credit. *

a.94,656 J/g°C
b.2.0 J/g°C
c.23 J/g°C
d.1.5 J/g°C

10. A positive Δ H value indicates that the reaction is *

a.endothermic
b.exothermic
c.neutral
d.synthesis

11. What are the four variables that affect the rate of a reaction? *



12. What is the measurement of the heat flow into or out of a system for chemical and physical processes called? *


13. Describe how the ocean affects the temperature of coastal areas in the summer and winter. *