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Thermal Physics

Total questions: 60

Worksheet time: 2hrs 45mins

Name
Class
Date
1.
The amount of energy required to raise the temperature 1ºC for every kilogram is called____?
a)
Thermal Energy
b)
Specific Heat
c)
Temperature
d)
Kinetic Energy
2.
What is the symbol for Thermal Energy?
a)
Q
b)
t
c)
m
d)
C
3.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
4.
What is the symbol for Specific Heat
a)
Q
b)
t
c)
m
d)
C
5.
What is the equation to measure change in Thermal Energy?
a)
Q=mc∆t
b)
Q=mc
c)
Q= ∆mct
d)
m=QC
6.
Water has a specific heat of 4184 J/KgºC.  Wood has a specific heat of 1760 J/KgºC.  What material needs more energy to raise the temperature 1ºC
a)
Wood
b)
Water
c)
Both are the same
7.
Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy.  What material would be the coolest after being heated?
a)
Copper
b)
Carbon Steel
c)
Zinc
d)
Stainless Steel
8.
A material was cooled from 100ºC to 40ºC.  What is the temperature change?
a)
60ºC
b)
40ºC
c)
-60ºC
d)
-40ºC
9.
What is the SI unit for temperature?
a)
Kelvin
b)
Celcius
c)
Fahrenheit
d)
All of these
10.
How does heat flow?
a)
Always from cold to warm
b)
Always from warm to cold
c)
Both warm to cold & cold to warm
d)
It depends on the temperature
11.
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
12.
Temperature is a measure of the...
a)
total energy in a substance
b)
total kinetic energy in a substance
c)
average potential energy in a substance
d)
average kinetic energy of molecules in a substance
13.
What letter represents heat?
a)
S
b)
C
c)
T
d)
Q
14.
What is 0oC in Kelvin?
a)
110 K
b)
100 K
c)
273 K
d)
210 K
15.
How much heat is absorbed when 355g of water goes from 25-45 degrees Celsius? The specific heat of water is 4180 J/kg.K 
a)
21945 J
b)
21945 g
c)
29678 J
d)
29678 g
16.
A 300g piece of aluminum at 100 oC is placed in a 150g of H2O at 200 oC. The final temp. of the mix is 35 oC. What is the specific heat of the aluminum if the specific heat of the water is 4180 J/kgK?
a)
22415 J
b)
22415 g
c)
32415 J
d)
32415 g
17.
To convert from Celsius to Kelvin:
 
K = Degrees Celsius + __________  
a)
251 K
b)
275 K
c)
213 K
d)
273 K
18.

the symbol for specific latent heat is

a)

c

b)

ll

c)

Q

d)

m

19.

The heat absorbed by melting a solid is known as

a)

latent heat of fusion

b)

latent heat of solid

c)

latent heat of liquid

d)

latent heat of vaporisation

20.

What is the formula to calculate specific latent heat of vaporisation?

a)

l=Qml=\frac{Q}{m}

b)

c = Q/(mΔƟ)

c)

Q = mcΔƟ

d)

Q=mlQ=ml

21.
No more energy can be removed from matter at:
a)
its freezing point
b)
0°C
c)
absolute zero
d)
273 K
22.

if 334000 J of heat is required to change state of 1 kg of ice into water then heat of fusion is

a)

668000 J/kg

b)

334000 kg

c)

334000 J/kg

d)

668000 J

23.

The amount of heat required to change 1 kg of liquid into gas at constant temperature is called

a)

heat of fusion

b)

heat of vaporization

c)

heat of change of state

d)

heat of solid

24.

What is internal energy

a)

the average kinetic energy of the particles

b)

heat energy

c)

the sum of the kinetic and potential energy

d)

the average potential energy

25.

which value is larger for a substance

a)

latent heat of fusion

b)

latent heat of vaporisation

26.

Which material heats up quickest?

a)

Aluminium

b)

Concrete

c)

Diamond

d)

Glass

e)

Water

27.

Which material heats up slowest?

a)

Aluminium

b)

Concrete

c)

Diamond

d)

Glass

e)

Water

28.

What is the equation for specific heat capacity?

a)

Q=mcΔTQ=mc\Delta T

b)

Q=mcΔTQ=\frac{mc}{\Delta T}

c)

Q=ΔTmcQ=\frac{\Delta T}{mc}

d)

Q=cΔTmQ=\frac{c\Delta T}{m}

e)

Q=mΔcTQ=m\Delta cT

29.

The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?

a)

66.5 J

b)

665 J

c)

0.0266 J

d)

0.665 J

30.

20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?

a)

418 J

b)

209 J

c)

83 J

d)

4.18 J

31.
Specific heat of water is  4.18 J/g°C. Specific heat of wood is 1.760 J/g°C What material needs more heat energy to raise the temperature?
a)
Water
b)
Wood
c)
Both are same
32.
The temperature of an unknown piece of metal with a mass of 30.00 g changes from 25.0 °C to 35.0 °C when the metal absorbs 350.0 J of energy. What is the specific heat of the metal?
a)
1.17 J/g°C
b)
-1.17 J/g°C
c)
0.857 J/g°C
d)
-0.857 J/g°C
33.
A high specific heat means...
a)
It heats up quickly with energy added
b)
It requires more energy to change temperature
34.
What is Specific Heat?
a)
The  amount of thermal energy required to increase the temperature of 1kg of a material by 1°C.
b)
The  amount of radiant energy required to increase the temperature of 1kgof a material by 1°C
c)
The  amount of energy required to increase the temperature of 1kgof a material by 1°C.
d)
The  amount of friction  required to increase the temperature of 1kgof a material by 1°C.
35.

6200 J of heat is used to increase the temperature of a 1.2 kg metal block. The specific heat capacity of metal block is 450 J kg−1°C−1J\ kg^{-1}\degree C^{-1}  . What is the rise in temperature of the metal block ?

a)

9.6  °\degree  C

b)

11.5  °\degree  C

c)

15.0  °\degree  C

d)

360.0  °\degree  C

36.

The specific heat of platinum is 133 J kg-1°C-1. How much heat(Q) is released when a 10 g piece of platinum cools from 100°C to 50°C?

a)

66.5 J

b)

665 J

c)

0.0266 J

d)

0.665 J

37.

20 g of water. specific heat of water is 4200 J kg-1°C-1. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?

a)

418 J

b)

430 J

c)

420 J

d)

42000 J

38.

The SI units J kg-1°C-1 measures

a)

Specific heat capacity

b)

Heat capacity

c)

temperature

d)

heat energy

39.

The specific heat(c) of copper is 390  J kg−1°C−1J\ kg^{-1}\degree C^{-1}  . What is the temperature change when 100 J of heat  is applied on the 20 g of copper?

a)

12 °C

b)

24.12°C

c)

1.95 °C

d)

12.82 °C

40.
Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy.  What material would be the coolest after being heated?
a)
Copper
b)
Carbon Steel
c)
Zinc
d)
Stainless Steel
41.

_______________ states that the amount of heat energy is required to raise 1 kg of object's temperature of 1°C.

a)

Conduction

b)

Convection

c)

Specific heat capacity

d)

Heat capacity

42.

The temperature of an unknown piece of metal with a mass of 30 g changes from 25 °C to 35 °C when the metal absorbs 350 J of energy. What is the specific heat capacity of the metal?

a)

1166.7 J kg-1°C-1

b)

-1.17 J kg-1°C-1

c)

-1166.7 J kg-1°C-1

d)

-0.857 J kg-1°C-1

43.

The symbol for heat capacity is .......

a)

c

b)

Q

c)

C

d)

t

44.

Which material heats up slowest?

a)

Aluminium

b)

Concrete

c)

Diamond

d)

Glass

e)

Water

45.

Which material heats up quickest?

a)

Aluminium

b)

Concrete

c)

Diamond

d)

Glass

e)

Water

46.

What is the equation for specific heat capacity?

a)

Q=mcΔθQ=mc\Delta\theta

b)

Q=mcΔθQ=\frac{mc}{\Delta\theta}

c)

Q=ΔθmcQ=\frac{\Delta\theta}{mc}

d)

Q=cΔθmQ=\frac{c\Delta\theta}{m}

e)

Q=mΔcTQ=m\Delta cT

47.

1kg of water cools from 100°C to 20°C. Which of the following is true? [cwater = 4200 J kg-1°C-1]

a)

It gives out 336 kJ

b)

It gives out 336 MJ

c)

It takes in 336 kJ

d)

It takes in 336 MJ

e)

It doesn't take in or give out any energy

48.

2 kg of glass at a temperature of 20°C is given 84 000 J. What is the final temperature?

a)

+50°C

b)

-50°C

c)

-30°C

d)

70°C

e)

20°C

49.

In heat capacity or specific heat capacity equations, what does the triangle represent?

a)

Temperature

b)

energy

c)

mass

d)

change in

e)

change in temperature

50.

A piece of silver is heated to 87.36 oC and dumped into a calorimeter containing 65.86 g of water at a temperature of 24.03 oC. Calculate the mass of this silver sample if the final temperature of the silver and water are 28.69 oC.

(csilver = 235 J kg-1oC-1)

(cwater = 4200 J kg-1oC-1)

a)

0.0123 kg

b)

0.0935 kg

c)

93.500 kg

d)

14819 kg

51.

What state is the matter in at E?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

e)

Not enough information to say

52.

What state is the matter between C and D

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

e)

Not enough information to say

53.

If the specific heat of water is 4.18 J/g∙°C, how much heat is required to increase the temperature of 1.2 kg of water from 23 °C to 39 °C?

a)

-80,256 J

b)

80.256 J

c)

80,256 J

d)

-80.256 J

54.
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?
a)
Between 10°C and 70°C
b)
More than 70°C
c)
Less than 10°C
d)
Same as the room temperature
55.

If two objects have different temperatures when they come in contact, 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

56.
What is the specific heat of an unknown substance if 100.0 g of it at 200.0 °C reaches an equilibrium temperature of 27.1 °C when it comes in contact with a calorimeter of water.  The water weighs 75. g and had an initial temperature of 20.00 °C?  (Specific heat of water is 4.18 J/g°C) (show your work)
a)
0.111 J/g°C
b)
1.29 J/g°C
c)
0.129 J/g°C
d)
22225.85 J
57.
A sample of iron receives 50.J of heat energy that raises the temperature of the iron by 25.0°C. If iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample?  (show your work)
a)
25g
b)
30g
c)
20g
d)
50g
58.
Calorimetry Question:
A piece of metal with a mass of 32.8 g is heated to 100.5°C and dropped into 138.2 g of water at 20.0°C.  The final temperature of the system is 30.2°C.  What is the specific heat capacity of the metal? (show your work)
a)
2.56 J/g°C
b)
0.391 J/g°C
c)
5.29 J/g°C
d)
3.50 J/g°C
59.

What does "ΔT" mean?

a)

A change in health

b)

A change in heat

c)

A change in height

d)

A change in temperature

60.

A metal cube with a mass of 55grams at temperature of 85°C is immersed in 150grams of water at temperature of 20°C. The metal and water then reach a final temperature of 23oC. What is the specific heat of the metal?

a)

0.55 J/goC

b)

2120 J/goC

c)

11.4 J/goC

d)

4.18 J/goC

e)

0.75 J/goC

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