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- 1. Multiple Choice
___________________ is the capacity to do work or supply heat.
energy
heat changes
specific heat
thermochemistry
- 2. Multiple Choice
Ice cream melting is an example of an __________ process. (heat enters the system from the surroundings)
endothermic
exothermic
- 3. Multiple Choice
Sweating is an __________________ process because heat is released.
endothermic
exothermic
- 4. Multiple Choice
what does c stand for?
heat capacity
specific heat
mass
temperature
- 5. Multiple Choice
Mass must always be in ________ for energy calculations.
kilograms
grams
joules
calories
- 6. Multiple Choice
What is the specific heat of water?
4.184 J/gC
1.00 cal/gC
All of the above
none of the above
- 7. Multiple Choice
When heat flows from system to the surroundings that is an example of an ________________ process.
exothermic
endothermic
- 8. Multiple Choice
What device is used to measure the amount of heat involved in a chemical reaction or physical process?
barometer
calorimeter
thermometer
- 9. Multiple Choice
Kinetic energy is energy gained _______________
while at rest
during motion
- 10. Multiple Choice
What is calorimetry?
process of measuring kinetic and potential energy
process of measuring heat flow of chemical reactions
process of measuring pressure and temperature of a substance
- 11. Multiple Choice
Heat flows from _______ to _________.
warm to cool
cool to warm
- 12. Multiple Choice
What area of study in chemistry is concerned with the heat transfers that occur during chemical reactions?
stoichiometry
thermochemistry
inorganic chemistry
physical chemistry
- 13. Multiple Choice
The specific heat of a substance varies with the mass of a sample. True or False?
True
False
- 14. Multiple Choice
1 calorie = _______ Joules
1000
1
500
4.184
- 15. Multiple Choice
Samples of two different substances having the same mass always have the same heat capacity. True or False?
True
False
- 16. Multiple Choice
The unit for q (heat energy) can be in joules or calories. True or false?
true
false
- 17. Multiple Choice
The law of conservation of energy states that
in any chemical or physical change, energy cannot be created or destroyed, only changed in form.
heat changes occur during chemical and physical changes.
energy is the capacity to do work or to supply heat
there are two types of energy, kinetic and potential
- 18. Multiple Choice
1000 calories = ____ kcal
10
100
1
1000
- 19. Multiple Choice
In energy calculations, temperature must be in which unit?
Fahrenheit
Kelvin
Celsius
- 20. Multiple Choice
How can you find the change in temperature?
none of the above
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