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- 1. Multiple ChoiceEnergy is transferred as heat between two objects of ___________ temperatures.differingsame
- 2. Multiple ChoiceAs the kinetic energy of the molecules in a substance increases, the temperature of the substance __________.increasesdecreases
- 3. Multiple ChoiceThe measure of average kinetic energy of all the particles within an object is called ____________.temperatureconductionradiationheat
- 4. Multiple ChoiceThe energy transferred between the particles of two objects because of the temperature difference between the two objects is called ________________.heatinsulatorconductortemperature
- 5. Multiple ChoiceA high specific heat means...It heats up quickly with energy addedIt requires more energy to change temperature
- 6. Multiple ChoiceWhen you measure the temperature of hot soup, you are measuring the:thermal energy given off by the bowlspecific heat of the bowlaverage kinetic energy of the particles in the soupthermal expansion of the particles in the soup
- 7. Multiple ChoiceHeat is a flow of energy caused byspecific heatdensity differences in solidstemperature differencesthermal expansion
- 8. Multiple ChoiceIf the particles of two substances have the same average kinetic energy, then___.the specific heats of the substances are identicalthe particles will not react chemicallythe substances have equal thermal energiesthe substances have equal temperatures
- 9. Multiple ChoiceWhat is thermal equilibrium?When two objects are at rest at the same time.When two or more objects reach a common temperature.When two objects have the same specific heat.
- 10. Multiple ChoiceA calorie is a common unit of force.TrueFalse
- 11. Multiple ChoiceWhat is the formula to calculate heat energy required to raise the temperature of any substance?Q=mc∆tQ=mcQ= ½mvm=QC
- 12. Multiple Choice
A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.
0.46 J/goC
1.654 J/goC
2,567,446.875 J/goC
- 13. Multiple Choice
How many joules of heat are needed to raise the temperature of 10.0 g of aluminum from 22.0°C to 55.0°C, if the specific heat of aluminum is 0.903 J/g°C?
298 Joules
0.003 Joules
297 J/g°C
0.003 J/g°C
- 14. Multiple Choice
A 300.0 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 66,300 J. If the specific heat of copper is 0.3845 J/g 0C, what is the change of the copper's temperature?
641 °C
7,650,000 Joules
- 15. Multiple Choice
The specific heat of aluminum is 0.9025 J/g°C. How much heat(Q) is released when a 10.0 g piece of aluminum foil is taken out of the oven and cools from 100.0° to 50.0°?
451 J
45.1 J
400 J
- 16. Multiple ChoiceFor a skillet, used for cooking, do you want a high or low specific heatHigh, so that it will need more energy to heat upLow, so that it will change temperature quickly
- 17. Multiple Choice
Which of the following is NOT true about heat?Heat moves from hot to coldHeat is a form of energyHeat cannot be transferredHeat makes molecules speed up - 18. Multiple Choice
20.0 g of water. specific heat of water is 4.184 J/g°C. temperature changes from 25.0° C to 20.0° C, how much heat energy (Q) moves from the water to the surroundings?
418 Joules
209 J
83 J
4.18 J
- 19. Multiple Choice
The specific heat(c) of copper is 0.38 J/g °C. What is the temperature change(∆t) when 100.0 Joules of heat(Q) is added to 20.0 grams?
13 °C
13.2°C
13.16 °C
- 20. Multiple ChoiceWhen a piece of aluminum foil is taken out of the oven and cools from 100° to 50°, What is the change in temperature?50°0°100°150°
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