Thermochemistry Review: Question Preview (ID: 9667)

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If two objects are at different temperatures, the heat with transfer from...
a) hot to hot.
b) cold to cold.
c) cold to hot.
d) hot to cold.

When a solid becomes a liquid, it absorbs energy. This is an __________ change.
a) Endothermic
b) Slow
c) Fast
d) Exothermic

1 Calorie Equals 4.18 Joules. How many calories are in 418 Joules?
a) 100
b) 1000
c) 10
d) 418

The units of specific heat are_____?
a) J/g*C
b) J/C
c) g/J
d) J/g

Heat is defined as....
a) The energy that is transferred between matter at different temperatures.
b) None of theses choices.
c) The energy of a molecule.
d) The temperature of matter.

What is the specific heat formula?
a) Q=mc(delta)T
b) Q=mc
c) E=mc
d) Q=mcT

What does temperature measure?
a) The kinetic energy of the molecules.
b) The energy of an atom.
c) The potential energy of molecules.
d) The heat of matter.

delta-H-total is equal to?
a) delta-H-Products minus delta-H-Reactants.
b) delta-H- Products plus delta-H reactants.
c) delta-H-Products.
d) delta-H-Reactants plus delta-H-Products

Exothermic reactions feel _____.
a) Cold.
b) None of the choices.
c) Freezing.
d) Hot.

What does specific heat measure?
a) How much energy it takes to raise 1-g of matter by 1-degrees C.
b) How much the temperature goes up.
c) How much energy it takes to raise 1-g of matter by 10-degrees C.
d) How much energy it takes to raise the temperature of matter by 50-degrees.

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