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SCI-111
Physical Science Ch.4
23
Science
Undergraduate 1
04/18/2008

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Cards

Term
On the Celsius temperature scale ...
Definition
the numbers relate to the boiling and freezing of water
Term
Internal energy refers to the
Definition
total potential and kinetic energy of the molecules
Term
The specific heat of copper is 0.093 cal/g C and the specific heat of aluminum is 0.22 cal/g C. The same amount  of energy applied to equal masses, say 50g of copper and aluminum, will result in...
Definition
a higher temperature for the copper
Term

The heat involved in the change of phase from solid ice to liquid water is called...

Definition
latent heat of fusion.
Term
The temperature of a gas is proportional to the...
Definition
average kinetic energy of the gas molecules
Term
The temperature known as room temperature is nearest to...
Definition
20 C
Term
Using the Kelvin temperature scale, the freezing point of water is correctly written as...
Definition
273 K
Term
The specific heat of soil is 0.20 kcal/kg C and the specific heat of water is 1.00kcal/kg C. This means that if 1kg of soil and 1 kg of water each receives 1kcal of energy, ideally...
Definition
the soil will be 5 C warmer than the water
Term
Styrofoam is a good insulating matereal because...
Definition
it contains many tiny pockets of air
Term
The transfer of heat that takes place because of density difference in fluids is...
Definition
convection
Term
Latent heat is "hidden" because it
Definition
goes into or comes out of internal potential energy
Term
As a solid undergoes a phase change to a liquid, it
Definition
absorbs heat while remaining a constant temperature
Term

A heat engine is designed to

Definition
convert heat into mechanical energy
Term
The work that a heat engine is able to accomplish is ideally equivalent to the...
Definition
difference betweeen the heat supplied and the heat rejected
Term

Which of the following contains the most heat?

a) a bucket of water at 0 C

b) a barrel of water at 0 C

c) Neither contains any heat sice the temperature is zero

d) Both have the same amount of heat

Definition

b) a barrel of water at 0 C

Term
The specific heat of copper is roughly three times as great as the specific heat of gold. WHich of the following is true for equal masses of copper and gold?
Definition
A piece of copper stores three times as much heat at the same temperature 
Term

Cooking pans made from which of the following metals would need less heat to achieve a certain cooking temperature?

a) aluminum (s.h. 0.22 kcal/kg C)

b) copper (s.h. 0.093 kcal/kg C)

c) iron (s.h. 0.11 kcal/kg C)

Definition
B
Term
When you add heat to a substance, its temperature
Definition
might stay the same
Term
At temperatures above freezing, the evaporation rate can equal the condensation rate only at...
Definition
any temperature
Term
The phase change from ice to liquid water takes place at
Definition
constant temperature
Term

Which of the following has the greatest value for liquid water?

a) latent heat of fusion

b) latent heat of vaporization

c) both are equivalent

d) all of the above

Definition
B
Term

Which of the following supports the second law of thermodynamics?

Definition

Energy tends to degrade, becoming a lower and lower quality.

Term
The heat death of the universe in the future is when the universe is supposed to
Definition
freeze at a uniform low temperature
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