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Thermochemistry Review
Test Description: Brief Thermochemistry Review
Instructions: Answer all questions to get your test result.
1) If two objects are at different temperatures, the heat with transfer from...
A
cold to cold.
B
cold to hot.
C
hot to cold.
D
hot to hot.
2) When a solid becomes a liquid, it absorbs energy. This is an __________ change.
A
Endothermic
B
Exothermic
C
Fast
D
Slow
3) 1 Calorie Equals 4.18 Joules. How many calories are in 418 Joules?
A
10
B
418
C
100
D
1000
4) The units of specific heat are_____?
A
g/J
B
J/g
C
J/C
D
J/g*C
5) Heat is defined as....
A
The energy of a molecule.
B
The temperature of matter.
C
None of theses choices.
D
The energy that is transferred between matter at different temperatures.
6) What is the specific heat formula?
A
Q=mcT
B
Q=mc(delta)T
C
Q=mc
D
E=mc
7) What does temperature measure?
A
The heat of matter.
B
The potential energy of molecules.
C
The energy of an atom.
D
The kinetic energy of the molecules.
8) delta-H-total is equal to?
A
delta-H-Products.
B
delta-H- Products plus delta-H reactants.
C
delta-H-Products minus delta-H-Reactants.
D
delta-H-Reactants plus delta-H-Products
9) Exothermic reactions feel _____.
A
Freezing.
B
Hot.
C
None of the choices.
D
Cold.
10) What does specific heat measure?
A
How much energy it takes to raise the temperature of matter by 50-degrees.
B
How much energy it takes to raise 1-g of matter by 1-degrees C.
C
How much the temperature goes up.
D
How much energy it takes to raise 1-g of matter by 10-degrees C.
*select an answer for all questions
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