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WorksheetsCalorimetry
Total questions: 20
Worksheet time: 21mins
Name
Class
Date
1.
For the formula:
Q= m c ∆T
The units for specific heat are:
Q= m c ∆T
The units for specific heat are:
a)
g /J C
b)
°C/g J
c)
kJ/g
d)
J/g°C
2.
What would be the effect on the particles if more heat is supplied to the system?
a)
They would slow down
b)
They would stop moving
c)
They would speed up
d)
There would be no effect
3.
Thermal energy ALWAYS moves from _____ to _____.
a)
solid to liquid
b)
ice to water
c)
hot to cold
d)
solid to gas
4.
LT3: If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________
a)
one reaches a temperature of zero
b)
they both have an equal temperature
c)
one runs out of energy
5.
The movement of thermal energy from an object at a higher temperature to an object at a lower temperature is called ____________.
a)
thermal
b)
expansion
c)
temperature
d)
heat
6.
The total energy of all the particles in a substance is called:
a)
temperature
b)
thermal energy
c)
degrees
d)
mass
7.
If the specific heat of water is 4,186 J/kg∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C?
a)
-80,371.2
b)
44,938.6
c)
80,371.2
d)
112,575.9
8.
What is the specific heat of an unknown substance if 20 kg of it at 400 °C reaches an equilibrium temperature of 351 °C when it comes in contact with a piece of aluminum. The aluminum weighs 55 kg and had an initial temperature of 4 °C? (Specific heat of aluminum is 903 J/kg °C) Use the equation mC(Tf – Ti) + mC(Tf – Ti)= 0
a)
17,233,755
b)
-17,233,755
c)
17,585.46
d)
723
9.
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
10.
Steam at temperature of 100°C is piped to 3 kg of water at the temperature of 5°C until the water reaches the boiling point. The mass of the steam required is
[Specific latent heat of vaporization of water = 2.26 × 106 J kg−1, specific heat capacity of water = 4.2 × 103 J kg−1°C−1]
[Specific latent heat of vaporization of water = 2.26 × 106 J kg−1, specific heat capacity of water = 4.2 × 103 J kg−1°C−1]
a)
0.26 kg
b)
0.53 kg
c)
0.94 kg
d)
1.89 kg
11.
How many Joules of energy are required to change 10 gram of ice at -2 οC to water at 20 οC?
a)
440 J
b)
880 J
c)
3,840 J
d)
66,000 J
12.
How many Joules of energy are required to change 10 gram of water from 20 οC to 90 οC?
a)
1400 J
b)
2800 J
c)
210,000 J
d)
1,400,000 J
13.
How many Joules of energy are required to make 100 grams of ice at 0 οC completely melt?
a)
200 J
b)
400 J
c)
30,000 J
d)
2,000,000 J
14.
The symbol for specific heat is .......
a)
c
b)
Q
c)
m
d)
t
15.
Water molecules have the greatest kinetic energy in
________________
________________
a)
Ice at 0 °C.
b)
Water at 373 K.
c)
Water at 98 °C
d)
Steam at 150 °C.
16.
The unit Joules is for ___________
a)
heat energy
b)
temperature
c)
specific heat
17.
Does everything have Specific Heat?
a)
I give up!
b)
no
c)
yes
18.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
19.
The graph shows the cooling curve of a substance.
The specific latent heat released at stages?
The specific latent heat released at stages?
a)
CD and FG
b)
DE and EF
c)
EF and FG
d)
DE and FG
20.
A metal cube at temperature of 10°C immersed in a liquid at temperature of 70°C.
What is the temperature of the metal cube when thermal equilibrium is achieved between the cube and the liquid?
What is the temperature of the metal cube when thermal equilibrium is achieved between the cube and the liquid?
a)
Between 10°C and 70°C
b)
More than 70°C
c)
Less than 10°C
d)
Same as the room temperature
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