Thermochemistry Review Question Preview (ID: 53410)
Review Of The Thermochemistry Unit.
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Increased levels of carbon dioxide in the atmosphere is a result of which of the following?
a) Increased combustion due to human activity
b) Decreased combustion due to human activity
c) Increased combustion due to natural causes
d) Decreased combustion due to natural causes
Which of the following will take the most energy to change the temperature?
a) Water: 4.184 J/g*C
b) Helium: 5.30 J/g*C
c) Lithium: 3.56 J/g*C
d) Vegetable Oil: 2.0 J/g*C
Which of the following would require the most energy to increase the temperature?
a) Iron: 0.44 J/g*C
b) Vegetable Oil: 2.0 J/g*C
c) Aluminum: 0.90 J/g*C
d) Air: 1.02 J/g*C
Which of the following requires the least amount of energy to change the temperature?
a) Brass: 0.38 J/g*C
b) Silver: 0.29 J/g*C
c) Glass: 0.84 J/g*C
d) Concrete: 0.88 J/g*C
What is the law of conversation of energy?
a) Energy cannot be created but can be destroyed
b) Energy cannot be destroyed but can be created
c) Energy cannot be created or destroyed
d) Energy can be created and destroyed
What are the reactants of combustion?
a) Carbon dioxide and water
b) Carbon dioxide and hydrocarbon
c) Carbon dioxide and oxygen
d) Hydrocarbon and oxygen
What are the products of combustion?
a) Carbon dioxide and water
b) Carbon dioxide and hydrocarbon
c) Hydrocarbon and oxygen
d) Carbon dioxide and oxygen
Define specific heat
a) The energy required to raise the temperature of one gram of a substance by one degree Celsius
b) The energy required to lower the temperature of one gram of a substance by one degree Celsius
c) The energy required to raise the mass of one gram of a substance by one degree Celsius
d) The energy released in order to raise the temperature of one gram of a substance by one degree Celsius
Define endothermic.
a) Energy going out of a system
b) Energy going into a system
c) Energy being creating by a system
d) Energy being transferred by a system
Define exothermic.
a) Energy going into a system
b) Energy required by a system
c) Energy going out of a system
d) Energy being transferred by a system
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