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Thermodynamics

Total questions: 25

Worksheet time: 50mins

Name
Class
Date
1.
A(n) _____________ is a device for measuring temperature.
a)
thermometer
b)
barometer
c)
anemometer
d)
psychrometer 
2.
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
3.
A slower particle has a lower energy than an identical, faster particle.
a)
True
b)
False
4.

At absolute zero,

a)

all the thermal energy that can be removed from the substance has been removed

b)

-273.15 C

c)

0 K

d)

all of the above

5.
The transfer of thermal energy between objects of different temperatures is called...
a)
temperature
b)
heat
c)
internal energy
d)
none of these
6.
Thermal energy always moves:
a)
From a high temperature object to a lower temperature object.
b)
From a lower temperature object to a higher temperature object.
c)
From an object with lower kinetic energy to an object with higher kinetic energy.
d)
From an object of higher mass to an object of lower mass.
7.

If a two objects have the same temperature, they always have the same thermal energy

a)

True

b)

False

8.

Heat transfer by conduction occurs as a result of..

a)

particles bumping into each other

b)

the motion of fluid in a liquid or gas due to temperature differences

c)

atoms giving off heat in the form of electromagnetic waves

d)

electromagnetic waves traveling from place to place through a vacuum

9.

Which of the following is an example of conduction

a)

getting warm while you sit outside on a nice summer day

b)

the rolling tides of the ocean

c)

frying an egg in a pan

d)

heating up your dinner in the microwave

10.

Heat transfer by convection occurs as a result of...

a)

particles bumping into each other

b)

the motion of fluid in a liquid or gas due to temperature differences

c)

atoms giving off heat in the form of electromagnetic waves

d)

electromagnetic waves traveling from place to place through a vacuum

11.

Which of the following is an example of convection

a)

frying an egg in a pan

b)

the interior of your can heating up on a summer day

c)

heating up your dinner in the microwave

d)

the rolling tides of the ocean

12.
Heat travels from the sun to the earth by the process of...
a)
conduction
b)
convection
c)
radiation
d)
insulation
13.

Which of the following is an example of radiation

a)

boiling water on a stove

b)

thunderstorms and hurricanes

c)

getting warm while you sit outside on a nice summer day

d)

the rolling tides of the ocean

14.
The first law of thermodynamics states that energy is
a)
created
b)
destroyed
c)
conserved
d)
created and destroyed
15.

_____ is a measure of the energy dispersal of a system

a)

entropy

b)

enthapy

c)

heat

d)

thermal energy

16.
The second  law of thermodynamics states that entropy of a system  tends to ______________. 
a)
increase
b)
decrease
c)
stay constant
d)
fluctuate wildly
17.
Which law of thermodynamics states that absolute zero cannot be reached?
a)
1st
b)
2nd
c)
3rd
18.
A substance with a high specific heat:
a)

Is always extremely hot.

b)

Requires a lot of energy to become hot.

c)

Is always extremely cold.

d)

Does not requires a lot of energy to become hot.

19.

Ethanol which has a specific heat of 2.44 (J/g oC). The temperature of 34.4 g of ethanol increases from 25 0oC to 78.8 0oC. How much heat energy was absorbed?

a)

758.5 J

b)

4515.8 J

c)

771.1 J

d)

6614.2 J

20.

 An unknown metal with a mass of 18.0g was heated to 100oC and then placed in a calorimeter with 100g of water at 21oC.  The temperature of the resulting system became 24oC. What is the specific heat capacity of the metal?

a)

1.2 J/goC

b)

2.3 J/goC

c)

0.92 J/goC

d)

0.16 J/goC

21.
The phase change from water vapor to liquid water is known as...
a)
evaporation
b)
precipitation
c)
condensation
d)
sublimation
22.

What state/phase is the object likely from points A to B?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

23.

Where on the graph are phase changes taking place?

a)

1

b)

2

c)

3

d)

4

e)

5

24.
Between which points is the temperature of the substance remaining constant?
a)
A-B only. 
b)
A-B, C-D, E-F
c)
B-C only. 
d)
B-C, D-E
25.
A substance's heating curve is shown in the graph.  What is its boiling point?
a)
100 C
b)
60 C
c)
80 C
d)
20 C

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