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Unit 6 Review

Total questions: 187

Worksheet time: 2hrs 34mins

Name
Class
Date
1.
The phase change from water vapor to liquid water is known as...
a)
evaporation
b)
precipitation
c)
condensation
d)
sublimation
2.
2. A change of state from a liquid to a solid is called....
a)
Melting
b)
Freezing
c)
Evaporation
3.
5. What is it called when a solid turns directly into a gas?
a)
Sublimation
b)
Condensation
c)
Liquid
4.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
5.
Change from Gas to Solid is called........
a)
Sublimation
b)
Deposition
c)
Fusion
d)
condensation
6.
Change from gas to liquid...
a)
condensation
b)
evaporation
c)
expansion
d)
movement
7.
Change from Liquid to Solid is call......
a)
fusion
b)
Freezing
c)
sublimation
d)
evaporation
8.
change from liquid to gas is called....
a)
expansion
b)
evaporation
c)
condensation
d)
sublimation
9.
All changes in the state of matter of a substance requires
a)
vibration
b)
water
c)
permission
d)
energy
10.
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
11.
What is deposition?
a)
Phase change from gas to solid
b)
phase change from liquid to solid
c)
Phase change from solid to gas
d)
Phase change from liquid to gas
12.
What is sublimation?
a)
phase change between solid and liquid
b)
pahse change from gas to solid
c)
phase change from solid to gas
d)
phase change from solid to solid
13.
Melting is ...
a)
liquid to solid
b)
solid to liquid
c)
solid to gas
d)
gas to liquid
14.
Freezing is...
a)
Solid to gas
b)
Liquid to solid
c)
Gas to solid
d)
Liquid to gas
15.
Boiling is ...
a)
liquid to gas
b)
gas to solid
c)
gas to liquid
d)
solid to liquid
16.

According to the kinetic molecular theory, a gas consists of molecules in constant fixed motion.

a)

True

b)

False

17.

According to kinetic molecular theory-Gas molecules influence each other only by collision; they exert no other forces on each other.

a)

True

b)

False

18.

According to the kinetic molecular theory, all collisions between gas molecules are inelastic; all kinetic energy is lost.

a)

True

b)

False

19.

According to the kinetic molecular theory, the volume actually occupied by the molecules of a gas is negligibly small; the vast majority of the volume of the gas is empty space through which the gas molecules are moving.

a)

True

b)

False

20.

In the KMT, pressure is the force exerted against the wall of a container by the continual collision of molecules against it.

a)

True

b)

False

21.

The total kinetic energy of a collection of gas molecules is inversely proportional to the absolute temperature of the gas.

a)

True

b)

False

22.

Ideal gases (best conditions) are light molecules such as hydrogen and helium. Heavier gases do not follow this rule.

a)

True

b)

False

23.

Real gases have attraction to other gas molecules which is opposite of the kinetic molecular theory. This way they can have a chemical reaction with each other.

a)

True

b)

False

24.

The first postulate of the KMT is that all matter is made up of

a)

tiny particles

b)

molecules

c)

cells

d)

mass

25.

According the KMT, the particles are in

a)

different states

b)

organized patterns

c)

constant motion

d)

various containers

26.

According to the KMT, increasing the temperature of particles will

a)

give off energy

b)

increase motion

c)

decrease volume

d)

increase pressure

27.

According to the KMT, the particles of the different states of matter differ in what two key aspects?

a)

volume and mass

b)

density and extention of interactions

c)

temperature and freedom of motion

d)

freedom of motion and extent of interactions

28.

In a solid, what keeps each particle trapped in the same small volume and with the same surrounding particles.

a)

strong attractions between particles

b)

ionic bonds

c)

lack of particle motion

d)

low temperatures

29.

What does increasing the temperatureof a solid lead to?

a)

increased mass of particles

b)

decreased space between particles

c)

decreased velocity of particles

d)

increased velocity of particles

30.

What is happening when a solid is becoming a liquid?

a)

The particles decrease in motion, collapsing the organized structure.

b)

The increased movement of particles pushes them completely out of position, collapsing the organized structure.

c)

The particles increase in motion, causing the organized structure to flatten into a smaller shape.

d)

A particle party!

31.

How doe the particles in a liquid behave?

a)

Neatly organized without any movement.

b)

Move around trapped in a small volume and with the same surrounding particles.

c)

Move fast enough to break attractions and pushing other particles out of the way.

d)

Move freely in a straight line until they collide with another particle.

32.

How doe the particles in a gas behave?

a)

Neatly organized without any movement.

b)

Move around trapped in a small volume and with the same surrounding particles.

c)

Move fast enough to break attractions and pushing other particles out of the way.

d)

Move freely in a straight line until they collide with another particle.

33.

If the particles are moving fast enough to complete break the attraction pulling it back towards other particles, what process is occuring?

a)

sublimation

b)

melting

c)

freezing

d)

evaporation

34.

When particles in a gas collide, they change

a)

direction and velocity

b)

velocity and temperature

c)

direction and volume

d)

volume and temperature

35.

In which state of matter are the particles the farthest apart?

a)

gas

b)

liquid

c)

solid

36.
What state of matter is X?
a)
solid 
b)
liquid
c)
gas
d)
supercritical fluid
37.
What is point A?
a)
triple point
b)
critical point
c)
equilibrium point
d)
normal melting point
38.
Water exists as a _____________ at 700 mmHg and 50 °C.
a)
solid
b)
liquid
c)
gas
d)
supercritical fluid
39.
What phase change(s) may occur at pressures below 4.58 mmHg?
a)
sublimation/deposition
b)
melting/freezing
c)
all phase changes are possible at these pressures
d)
vaporization/condensation
40.
Water exists as a _____________ at 3 mmHg and 50 °C.
a)
solid
b)
liquid
c)
gas
d)
supercritical fluid
41.
Which statement is true for carbon dioxide at -60 °C?
a)
All three phases are possible.
b)
It can exist as a solid or a gas, depending on pressure.
c)
It is a solid.
d)
With enough pressure it can be melted.
42.
Which phase change increases the molecule's freedom of movement?
a)
Melting
b)
Freezing
c)
Condensing
43.
Describe the substance between letters D and E. 
a)
Gas
b)
Liquid
c)
Melting
d)
Evaporating
44.

The melting point of the sample is

a)

-60 ºC

b)

-100 ºC

c)

60 ºC

d)

100 ºC

45.

Given the heating curve of a solid being heated at a constant rate, what is the boiling point of this substance?

a)

20°C

b)

50°C

c)

110°C

d)

170°C

46.

Given the heating curve for water, during which line segment could I find water in both the solid and liquid phase at the same time?

a)

AB

b)

BC

c)

CD

d)

DE

e)

EF

47.

This curve indicates what about the heat energy?

a)

Heat energy is being added or absorbed

b)

Heat energy is being released

48.

What is the freezing point of the substance?

a)

0oC

b)

60oC

c)

120oC

d)

180oC

49.
5. What is it called when a solid turns directly into a gas?
a)
Sublimation
b)
Condensation
c)
Liquid
50.

Where on the graph are phase changes taking place?

a)

1

b)

2

c)

3

d)

4

e)

5

51.
In a solid, the particles
a)
vibrate in place
b)
slide past one another
c)
overcome the strong attraction
52.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
53.

What state of matter is pictured?

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

54.
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
55.

At Point A, the beginning of observations, the substance exists in a solid state. Material in this phase has a ____________ volume and ___________ shape.

(a)  

56.

At POINT B, the temperature is (a)   degrees C.

57.

At POINT C, the substance is completely _____________, or in a ____________ state.

(a)  

58.

During the time from POINT D to POINT E, the liquid is (a)   .

59.

By POINT E, the substance is completely in the (a)   phase.

60.

Beyond POINT E, the substance is still in the __________ phase, but the molecules are moving _________ as indicated by the increasing temperature.

(a)  

61.
The phase change from water vapor to liquid water is known as...
a)
evaporation
b)
precipitation
c)
condensation
d)
sublimation
62.
2. A change of state from a liquid to a solid is called....
a)
Melting
b)
Freezing
c)
Evaporation
63.
5. What is it called when a solid turns directly into a gas?
a)
Sublimation
b)
Condensation
c)
Liquid
64.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
65.
Change from gas to liquid...
a)
condensation
b)
evaporation
c)
expansion
d)
movement
66.
Change from Liquid to Solid is call......
a)
fusion
b)
Freezing
c)
sublimation
d)
evaporation
67.
All changes in the state of matter of a substance requires
a)
vibration
b)
water
c)
permission
d)
energy
68.
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
69.

The absolute coldest anything can get.

In Celsius it's -273.15 degrees. Or 0 degrees Kelvin.

a)

Absolute cold

b)

Kelvin

c)

Absolute zero

d)

I don't know

70.
The faster molecules move, 
a)
the higher the temperature
b)
the less temperature
c)
the same temperature
d)
I don't know
71.
The slower molecules move, 
a)
the higher the temperature
b)
the less temperature
c)
the same temperature
d)
I don't know
72.

Temperature is a measure of the average _____________ energy of the particles of a substance.

a)

potential

b)

kinetic

c)

gravitational

d)

heat

73.

Which letter represents particles in solid form?

a)

A

b)

B

c)

C

d)

D

e)

E

74.

Between which points is the temperature of the substance remaining constant? (Diagram F)

a)

A-B only.

b)

A-B, C-D, E-F

c)

B-C only.

d)

B-C, D-E

75.

True or false: melting and freezing occur at the same temperature

a)

True

b)

False

c)

I don't know

76.

A substance's heating curve is shown in the graph. What is its boiling point? (Diagram B)

a)

100 C

b)

60 C

c)

80 C

d)

20 C

77.

Moving left to right across the diagram, are the particles moving faster or slower as time goes on? (Diagram F)

a)

Faster

b)

Slower

78.

Which letter represents where vaporization is occurring?

a)

A

b)

B

c)

C

d)

D

e)

E

79.

If a substance is freezing, what is happening to it?

a)

It is changing from a liquid to a solid

b)

It is losing thermal energy to its surroundings

c)

the particles of the substance are making bonds

d)

all of the above

80.

If a substance is melting, what is happening to it?

a)

It is changing from a solid to a liquid

b)

It is gaining thermal energy from its surroundings

c)

the particles of the substance are breaking bonds

d)

all of the above

81.

Boiling and evaporation are forms of vaporization

a)

True

b)

False

82.

What is happening at letter D?

a)

Evaporation of a liquid

b)

Condensation of a gas

c)

Boiling of a liquid

d)

The answer depends on if there is thermal energy being added or removed

83.

If energy is being added at letter D, what is happening on the phase change graph?

a)

Evaporation of a liquid

b)

Condensation of a gas

c)

Boiling of a liquid

d)

Both A and B

84.

What is happening at absolute zero

a)

A liquid is changing to a solid

b)

All particle motion stops.

c)

water can no longer change into a solid

d)

solids are permanently in their form

85.
Heat makes things _______________________
a)
colder
b)
warmer
c)
faster
86.
Heat is a form of _______________.  
a)
movement
b)
energy
c)
melting
87.

Without the sun's heat, what would happen to earth?

a)

aliens would invade

b)

the earth would explode

c)

it would be too cold to survive

88.

What is a conductor?

a)

a material that heat moves through easily

b)

a material that heat does not move through easily

c)

a material that turns cold when heated

d)

a tool for measuring temperature

89.

Which of these is a better conductor?

a)
b)
90.

Stir frying vegetables is an example of

a)

Convection

b)

Conduction

c)

Radiation

91.

Hot water rises and cold water sinks. Is this:

a)

Convection

b)

Conduction

c)

Radiation

92.
The sun shines down on this family as the play on the beach.
a)
conduction
b)
convection
c)
radiation
93.

Cold Pack on Person

a)

Heat is transferred from the cold pack to the person.

b)

Heat is transferred from the person to the cold pack

c)

The cold pack is getting colder. The person is getting warmer.

94.

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

95.

Which is an example of heat being transferred by conduction?

a)

a furnace blowing hot air through vents

b)

an ice cube melting in a person’s hand

c)

boiling water transferring heat to noodles

d)

the sun heating water in a swimming pool

96.
Which direction will the heat flow while this person holds a hot cup of tea?
a)
from the cup to her hand
b)
from her hand to the cup
c)
no heat is transferred
97.

If I want two things to stay different temperatures from each other, I need to:

a)

Maximize heat Transfer

b)

Minimize heat transfer

c)

Make them touch a lot

d)

Blow on both with a fan

98.

Near the ceiling of a room the air is warmer. The warm air rises because of ________.

a)

conduction

b)

convection

c)

radiation

99.
Which best describes the process of convection?
a)
Convection is the primary way  heat travels  through rays.
b)
Convection is the primary way heat travels  through metals.
c)
Convection is the primary way heat travels  through appliances.
d)
Convection is the primary way heat travels  through liquids and gasses.
100.

When I emit (send out) IR radiation, my body gets:

a)

Hotter

b)

Cooler

c)

Stays the Same

d)

Humans don't emit radiation

101.

The heat transferred from the Sun to the Earth by waves is called ________.

a)

conduction

b)

radiation

c)

convection

102.

The baby chickens kept warm by the heat lamps. This is an example of ________.

a)

conduction

b)

convection

c)

radiation

103.

The heat transferred from the Sun to the Earth by waves is called ________.

a)

conduction

b)

radiation

c)

convection

104.

When matter goes from liquid to solid, that's called...

a)

Freezing

b)

Melting

c)

Evaporation

d)

Condensation

105.

What happens to matter during freezing?

a)

Solid turns liquid.

b)

Liquid turns into solid.

106.

What did we pour into the smaller zip lock bag?

a)

water

b)

ice

c)

milk

d)

shampoo

107.

What state of matter is the milk when you begin?

a)

solid

b)

liquid

c)

gas

d)

plasma

108.

What state of matter should the milk be when you were finished?

a)

solid

b)

liquid

c)

gas

d)

plasma

109.

Why do we add salt to the ice?

a)

To add flavor to the ice cream

b)

to lower the temperature at which water freezes

c)

to melt the ice faster

d)

to completely stop the ice from ever melting

110.

What did you do make the milk turn into ice cream?

a)

take it outside in the sunshine

b)

shake and rub the bag

c)

put it in the freezer

d)

put in in an ice cream machine

111.

Why did we add sugar to the milk in the bag?

a)

to make it freeze faster

b)

to keep it from sticking to the bag

c)

to make it sweeter

d)

because we wanted to

112.

Why do you need to use a small towel or napkin and wear it on your hands?

a)

to keep your hands from getting so cold

b)

in case you spilled your milk you could clean it up quickly

c)

to make you look cooler while making ice cream

d)

so you could catch the football better at recess

113.

Why did the outside of the bag get wet? (Choose the best response)

a)

condensation occurred because the moisture in the air cooled when it came in contact with the cold ice

b)

bags leak

114.

What types of phase changes will take place when we are making ice cream? (Choose all that apply)

a)

freezing

b)

melting

c)

vaporization/boiling

d)

condensation

e)

sublimation

115.

How do the molecules in the milk mixture respond to the addition of ice & salt?

a)

the molecules speed up

b)

the molecules slow down

c)

the molecules come to a stop

d)

the molecules return to normal

116.

What happened to the heat energy that left the milk?

a)

the heat energy disappears

b)

the heat energy transfers to the ice

c)

the heat energy energy changes to electricity

d)

the heat energy becomes a liquid

117.

Why did the outside of the bag get wet? (Choose the best response)

a)

condensation occurred because the moisture in the air cooled when it came in contact with the cold ice

b)

bags leak

118.

How could you turn your ice cream back into a liquid?

a)

remove heat from the ice cream

b)

freeze molecules

c)

put it in the freezer

d)

add heat to the ice cream

119.

At which phase do molecules move the fastest and spread apart?

a)

solid

b)

liquid

c)

gas

d)

plastic

120.

What do you not put into the smaller plastic bag?

a)

ice

b)

vanilla

c)

white sugar

d)

half and half

121.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
122.

What letter is used to represent specific heat capacity?

a)

H

b)

P

c)

C

d)

T

123.
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.
124.
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
125.

Which will heat up slower?

a)

water

b)

lead

c)

granite

d)

iron

126.

Which will heat up faster?

a)

copper

b)

granite

c)

iron

d)

basalt

127.

Which of the following best explains why the sand at the beach is hotter than the water?

a)

Sand has a higher specific heat than water.

b)

Sand has a lower specific heat than water.

c)

There is more water than sand at the beach.

d)

There is more sand than water at the beach.

128.

The amount of energy required to raise the temperature 1ºC for every gram is called____?

a)

Thermal Energy

b)

Specific Heat

c)

Temperature

d)

Kinetic Energy

129.
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
130.
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
131.

Which material heats up quickest?

a)

Aluminium

b)

Concrete

c)

Diamond

d)

Glass

e)

Water

132.

Which material heats up slowest?

a)

Aluminium

b)

Concrete

c)

Diamond

d)

Glass

e)

Water

133.
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
134.
What is the transfer of heat by movement of liquids or gases?
a)
Radiation
b)
Convection
c)
Conduction
d)
Heat
135.
What is the measurement of the average kinetic energy of a substance?
a)
Kinetic energy
b)
Temperature
c)
Thermal energy
d)
Potential energy
136.
What is a substance that does NOT conduct heat well?
a)
Conductor
b)
Insulator
c)
Convector
d)
Radiator
137.
What is a substance that DOES conduct heat well?
a)
Conductor
b)
Insulator
c)
Convector
d)
Radiator
138.
What is the energy of the movement of particles in a substance?
a)
Potential energy
b)
Kinetic energy
c)
Thermal energy
d)
Temperature
139.
Heat transfers from an area of ________temperature to an area of ______ temperature.
a)
high to low
b)
low to high
c)
high to high
140.
If an object has particles that are moving very quickly, the object 's temperature is probably _____.
a)
cold
b)
slow
c)
big
d)
hot
141.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
142.

What letter is used to represent specific heat capacity?

a)

H

b)

P

c)

C

d)

T

143.
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.
144.
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
145.

Which will heat up slower?

a)

water

b)

lead

c)

granite

d)

iron

146.

Which will heat up faster?

a)

copper

b)

granite

c)

iron

d)

basalt

147.

Which of the following best explains why the sand at the beach is hotter than the water?

a)

Sand has a higher specific heat than water.

b)

Sand has a lower specific heat than water.

c)

There is more water than sand at the beach.

d)

There is more sand than water at the beach.

148.

The amount of energy required to raise the temperature 1ºC for every gram is called____?

a)

Thermal Energy

b)

Specific Heat

c)

Temperature

d)

Kinetic Energy

149.
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
150.
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
151.

Which material heats up quickest?

a)

Aluminium

b)

Concrete

c)

Diamond

d)

Glass

e)

Water

152.

Which material heats up slowest?

a)

Aluminium

b)

Concrete

c)

Diamond

d)

Glass

e)

Water

153.
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
154.
What is the transfer of heat by movement of liquids or gases?
a)
Radiation
b)
Convection
c)
Conduction
d)
Heat
155.
What is the measurement of the average kinetic energy of a substance?
a)
Kinetic energy
b)
Temperature
c)
Thermal energy
d)
Potential energy
156.
What is a substance that does NOT conduct heat well?
a)
Conductor
b)
Insulator
c)
Convector
d)
Radiator
157.
What is a substance that DOES conduct heat well?
a)
Conductor
b)
Insulator
c)
Convector
d)
Radiator
158.
What is the energy of the movement of particles in a substance?
a)
Potential energy
b)
Kinetic energy
c)
Thermal energy
d)
Temperature
159.
Heat transfers from an area of ________temperature to an area of ______ temperature.
a)
high to low
b)
low to high
c)
high to high
160.
If an object has particles that are moving very quickly, the object 's temperature is probably _____.
a)
cold
b)
slow
c)
big
d)
hot
161.

The equation for heat transfer is H= m×c×ΔTH=\ m\times c\times\Delta T  What is represented by  H?

a)

heat, measured in calories

b)

mass, measured in grams

c)

specific heat, in calories/gram/degree C

d)

temperature change in degree C

162.

The equation for heat transfer is H = m×c×ΔTH\ =\ m\times c\times\Delta T  What is represented by  ΔT\Delta T  ?

a)

heat, measured in calories

b)

mass, measured in grams

c)

specific heat, in calories/gram/degree C

d)

temperature change in degree C

163.

The equation for heat transfer is H = m×c×ΔTH\ =\ m\times c\times\Delta T  What is represented by  mm  ?

a)

heat, measured in calories

b)

mass, measured in grams

c)

specific heat, in calories/gram/degree C

d)

temperature change in degree C

164.

The equation for heat transfer is H = m×c×ΔTH\ =\ m\times c\times\Delta T  What is represented by  cc  ?

a)

heat, measured in calories

b)

mass, measured in grams

c)

specific heat, in calories/gram/degree C

d)

temperature change in degree C

165.

We know inuitively that it takes more energy to boil two kettles of water than one kettle. Mathematically, we say this as:

a)

heat energy is proportional to mass

b)

heat energy is proportional to change in temperature

c)

heat energy is proportional to specific heat capacity

166.

When making a kettle of tea, we start with room temperature water instead of cold water because

a)

heat energy is proportional to mass

b)

heat energy is proportional to change in temperature

c)

heat energy is proportional to specific heat capacity

167.

We had some nails and water that were both too hot too touch. The nails cooled down faster because:

a)

heat energy is proportional to mass

b)

heat energy is proportional to change in temperature

c)

heat energy is proportional to specific heat capacity

168.

The sand at a beach gets very hot during the day, and cools down rapidly at night. The water stays close to the same temperature, because

a)

the sand has a higher specific heat capacity

b)

the water has a higher specific heat capacity

169.

Something that has a high specific heat capacity is likely to:

a)

stay at close to a constant temperature

b)

heat up easily and stay hot

c)

cool down easily and stay cold

d)

heat up and cool down easily

170.

Something that has a low specific heat capacity is likely to:

a)

stay at close to a constant temperature

b)

heat up easily and stay hot

c)

cool down easily and stay cold

d)

heat up and cool down easily

171.

The equation for heat transfer is H = m×c×ΔTH\ =\ m\times c\times\Delta T  Using this equation, figure out how much heat is required to warm up 2000 g of water from 20 degree C to 100 degrees C. Conveniently, the specific heat capacity of water is 1 cal/gram/degree C

a)

40,000 cal

b)

160,000 cal

c)

20,000 cal

d)

80,000 cal

172.

The equation for heat transfer is H = m×c×ΔTH\ =\ m\times c\times\Delta T  Using this equation, figure out how much heat is released when 100 grams of olive oil cool by 40 degrees C. The specific heat capacity of olive oil is c = 0.5 calories/gram/degree C.

a)

40 cal

b)

100 cal

c)

1000 cal

d)

2000 cal

173.
Endothermic reactions feel
a)
warm
b)
cold
174.
Exothermic reactions feel
a)
warm
b)
cold
175.
energy in endothermic reactions are
a)
released
b)
ended
c)
absorbed
176.
energy in exothermic reactions are
a)
released
b)
absorbed
177.
Heat flows from _______ to ______ objects
a)
cooler to warmer
b)
warmer to warmer
c)
warmer to cooler
d)
cooler to cooler
178.
q in q=mcT formula stands for which variable?
a)
heat
b)
mass
c)
specific heat
d)
change in temperature
179.
The variable c in q=mcΔT stands for what?
a)
heat 
b)
mass
c)
specific heat
d)
change in temperature
180.
Using the heat equation, what would the formula look like if we were solving for change in temperature?
a)
Q m=∆T c
b)
Q/mc= ∆T
c)
Qm/c=∆T
d)
mcQ=∆T
181.
If 238 J of heat is absorbed by a sample of metal with a mass of 40.7 g, and it raises the temperature from 20.0°C to 32.4°C, what is the specific heat capacity of the metal?
a)
2.34 J/g°C
b)
0.472 J/g°C
182.
A 500g piece of Aluminum has a temperature rise of 7 degrees. What is the heat energy produced?  Specific heat of Aluminum is 0.900 J/gC.
a)
3000 J
b)
3150 J
183.
When 1500J of energy is lost from a 120 gram object, the temperature decreased from 45 degrees C to 40 degrees C. What is the specific heat of the object?
a)
2.5 J/gC
b)
0.4 J/gC
184.
A liquid with a specific hear of 1.9 J/gC has 4750 J of energy added to it. The temperature changed from 20 degrees C to 30 degrees C, what is the mass of the liquid?
a)
250 g
b)
0.004g
185.

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. How much heat does the water gain?

a)

1881 J

b)

690 J

c)

14253 J

d)

38874 J

186.

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. How much heat does the metal lose?

a)

-1881 J

b)

-690 J

c)

-14253 J

d)

-38874 J

187.

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