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WorksheetsSpecific Heat and Thermal Energy
Total questions: 20
Worksheet time: 1hrs 2mins
Name
Class
Date
1.
A 14.00-g piece of iron absorbs 1000 joules of heat energy, and its temperature changes from 25°C to 125°C. Calculate the specific heat capacity of iron.
a)
0.46 J/goC
b)
0.71 J/goC
c)
1.4 J/goC
d)
14,000,000 J/g⁰C
2.
How many joules of heat are needed to raise the temperature of 5.0 g of aluminum from 22°C to 32°C, if the specific heat of aluminum is 0.90 J/g°C?
a)
45 Joules
b)
450 Joules
c)
0.018 J/g°C
d)
0.45 J/g°C
3.
A 4.0 gram piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 6,000 J. If the specific heat of copper is 0.40 J/g0C, what Is the change of the copper's temperature?
a)
3,750 °C
b)
3,750 K
c)
37.5 ⁰C
d)
37.5 K
4.
When a piece of aluminum is taken out of the oven and cools from 100° to 50°, What is the change in temperature?
a)
-50°C
b)
50°
c)
-150°
d)
150°
5.
When a piece of aluminum is put into the oven and heats up from 30°C to 100°C, What is the change in temperature?
a)
70°
b)
50°
c)
-70°
d)
130°
6.
The symbol for specific heat is .......
a)
c
b)
Q
c)
m
d)
t
7.
The symbol for heat capacity is .......
a)
c
b)
Q
c)
m
d)
t
8.
What is the formula to calculate heat energy required to raise the temperature of any substance?
a)
Q=mc∆t
b)
Q=mc
c)
Q= ½mv
d)
m=QC
9.
Specific heat has the units...
a)
J/g⁰C
b)
Joules
c)
calories
d)
J/⁰C
10.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
c)
It is very hot
d)
It is high in the sky like the sun
11.
The specific heat of aluminum is 0.21 J/g°C. How much heat(Q) is released when a 5 g piece of aluminum foil is taken out of the oven and cools from 150° to 100°?
a)
52.5 J
b)
50.5 J
c)
50 J
d)
5.25 J
12.
For a skillet, used for cooking, do you want a high or low specific heat
a)
High, so that it will need more energy to heat up
b)
Low, so that it will change temperature quickly
c)
High, so that it will change temperature quickly
d)
Low, so that it will need more energy to heat up
13.
10 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 35° C to 30° C, how much heat energy (Q) moves from the water to the surroundings?
a)
418 Joules
b)
209 J
c)
219 J
d)
408 J
14.
If 200 grams of water is to be heated from 20.0° C to 100.0° C to make a cup of tea. How much heat was added to the water? (c = 4.18 J/g⁰C).
a)
6,600 J
b)
3,828 J
c)
66,000 J
d)
66,880 J
15.
The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 200 Joules of heat(Q) is added to 10 grams?
a)
5.13 °C
b)
51.3 °C
c)
5.00⁰C
d)
0.5⁰C
16.
If 30.0 grams of silver absorbs 375 J of energy and the temperature increased by 53.19⁰C.Calculate the specific heat of silver.
a)
0.235 J/g⁰C
b)
0.335 J/g⁰C
c)
598,388 J/g⁰C
d)
1.0 J/g⁰C
17.
How much energy is absorbed when 300. g of water, increases in temperature from 22.0 ˚C to 90.0 ˚C? Specific heat capacity of water = 4.18 J/gK
a)
85,272 J
b)
80, 272 J
c)
85,272 cal
d)
80, 272 cal
18.
How much energy (in J) is released when 100. g of a metal with a specific heat capacity of 0.44 J/g˚C cools from 105˚C to 65˚C?
a)
1760 J
b)
176 J
c)
1765 J
d)
1732
19.
The temperature of a 70.96 gram piece of metal falls 120⁰C and in the process releases 2001 Joules of energy. What is the specific heat of the piece of metal?
a)
0.235J/g⁰C
b)
0.335 J/g⁰C
c)
2.35 J/g⁰C
d)
3.35 Jg⁰C
20.
A sample of substance X has a mass of 13.7g is heated to the point where it has absorbed 199 J of energy and its temperature has risen from 33⁰C to 69⁰C. What is the specific heat of the substance?
a)
0.403 J/g⁰C
b)
4.03 J/g⁰C
c)
0.303 J/g⁰C
d)
3.03 J/g⁰C
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