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2.2 Thermodynamics

Total questions: 35

Worksheet time: 12mins

Name
Class
Date
1.

Solid A at 80°C is immersed in liquid B at 60°C.

Which statement correctly describes the energy changes between A and B?

a)

Both A and B release heat.

b)

A releases heat, and B absorbs heat.

c)

Both A and B absorb heat.

d)

A absorbs heat, and B releases heat.

2.

Which of the following is an example of conduction?

a)

A stove burner warms a metal pot.

b)

A fire warms the surrounding air.

c)

A person's skin heats up in the sun.

d)

A microwave heats up leftover food.

3.
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
4.
A slower particle has a lower energy than an identical, faster particle.
a)
True
b)
False
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.
Heat transfer by conduction occurs when...
a)
particles bump into each other
b)
large numbers of atoms move from place to place
c)
atoms give off heat in the form of electromagnetic waves
d)
electromagnetic waves travel from place to place through a vacuum
7.
Heat transfer by convection occurs when...
a)
electrons bump into other electrons
b)
large numbers of atoms move from place to place
c)
atoms give off heat in the form of electromagnetic waves
d)
electromagnetic waves travel from place to place through a vacuum
8.
Heat travels from the sun to the earth by the process of...
a)
conduction
b)
convection
c)
radiation
d)
insulation
9.
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.
10.
The temperature of a glass of cold water will eventually...
a)
Match the temperature of the surrounding environment.
b)
Always be colder than the surrounding environment.
c)
Become warmer than the surrounding environment.
d)
Never change temperature.
11.
The first law of thermodynamics states that energy is
a)
created
b)
destroyed
c)
conserved
d)
created and destroyed
12.
How are solids different from liquids?
a)
particles in solids are moving freely around each other.
b)
particles in solids have no motion.
c)
particles in solids are vibrating in place.
d)
particles in solids have more motion than in liquids
13.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
14.
What happens to particles when they are heated?
a)
They speed up and spread out
b)
They slow down and compress
c)
They stop moving
d)
They move closer together and speed up
15.
When a substance melts, the kinetic energy _____________.
a)
decreases
b)
stays the same
c)
increases
d)
decreases then increases
16.
When molecules flow around each other, they are in this phase
a)
solid
b)
liquid
c)
gas
d)
plasma
17.
What is the average kinetic energy of a substance called?
a)
volume
b)
temperature
c)
pressure
d)
movement
18.
If you have a liquid that changes to a gas, explain it's freedom of movement in both phases.
a)
molecules move away from each other, then around each other
b)
molecules move in place, then around each other
c)
molecules move around each other, then away from each other
d)
molecules move around each other, then in place
19.
If molecules in a substance move in place and energy is transferred into the substance
a)
then molecules move slower, and it will be a solid
b)
then molecules will move faster, and it will be a liquid
c)
then molecules will move faster, and it will be a solid
d)
then molecules will move slower, and it will be a liquid
20.
If energy is taken out of the substance, and the substance changed into a liquid,
a)
the substance started as a solid
b)
the substance started as a liquid
c)
the substance stayed the same
d)
the substance started as a gas
21.
When molecules move slower, kinetic energy
a)
increases
b)
stays the same
c)
decreases
d)
none of these
22.
The kind of heat transfer that travels through space in electromagnetic waves is ______________________.
a)
insulation.
b)
Radiation
c)
Conduction
d)
Convection
23.
In heat transfer, heat always flows from the _______________ substance to the _______________ substance.
a)
Hotter to colder
b)
Colder to hotter
c)
Hotter to hotter
d)
Colder to colder
24.
The type of heat transfer that happens through direct contact of molecules or particles with each other is ___________________.
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
25.
___________________ is the type of heat transfer that occurs in fluids, such as warm air rising and cold air sinking; creating wind.
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
26.
Two objects at different temperatures are in contact. Which of the following happens to their thermal energy?
a)
Their thermal energies remain the same.
b)
Thermal energy passes from the cooler object to the warmer object
c)
Thermal energy passes from the warmer object to the cooler object.
d)
Thermal energy passes back and forth equally between the two objects.
27.
The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
28.
A large house being heated by heater warms a house when the air is circulating.
a)
Convection
b)
Conduction
c)
Radiation
d)
insulation.
29.
Which of the following is the best example of conduction?
a)
A light bulb warming a lampshade
b)
An egg cooking in a frying pan
c)
Water boiling in a pot
d)
Gases circulating in the atmosphere
30.

Do molecules generally move faster at 45 C or 106 C?

a)

45 C because molecules have more energy than in 106C

b)

106 C because molecules have more energy than in 45C

c)

106 C because molecules have less energy than in 45C

d)

45C because molecules have less energy than in 106 C

31.

When you place the metal in boiling water, heat flows from the _________ to the _______.

a)

metal to the boiling water

b)

bottom of the metal to the top half of the metal

c)

bottom of the water to the top of the water

d)

boiling water to the metal

32.

Specific Heat is..

a)

the temperature initial minus temperature final

b)

the amount of heat/energy required to raise 1 gram of a substance by 1°C (or K) aka "C"

c)

the temperature final minus temperature initial

d)

the item in a system with given weight in grams

33.

Which type of system is always used in the Laws of Thermodynamics?

a)

Open Systems

b)

Closed Systems

c)

Isolated Systems

d)

Skeletal System (obviously)

34.

Which phase of matter has the greatest motion and least orderly arrangement?

a)

solid

b)

liquid

c)

gas

d)

none of the above

35.
It is possible to reach absolute zero
a)
true
b)
false

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