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Energy and Phases of Matter

Total questions: 89

Worksheet time: 2hrs 30mins

Name
Class
Date
1.
Which state of matter?
a)
Solid
b)
Liquid
c)
Gas
d)
Texas
2.

Between which two points is the gas heating up?

a)

A ----> B

b)

B <---- C

c)

C ----> D

d)

D ----> E

e)

E ----> F

3.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
4.
Which of the following terms would be on the heating curve of water at D?
a)
melting
b)
gas
c)
liquid
d)
boiling
5.
Which of the following terms would be on the heating curve of water at A?
a)
melting
b)
gas
c)
liquid
d)
solid
6.

Between which two points is Heat of Fusion?

a)

A <----> B

b)

B <----> C

c)

C <----> D

d)

D <----> E

e)

E <----> F

7.
The graph shows a cooling curve for an unknown substance.  What is happening during segment DE?
a)
boiling
b)
condensation
c)
freezing
d)
melting
8.
The molecules in the picture are tightly held together with little movement. They have shape and energy.  Therefore, the picture represents _________.
a)
solid
b)
liquid
c)
gas
d)
plasma
9.
The drops of water that appear on the outside of a glass of cold juice on a warm day are an example of?
a)
sublimation
b)
condensation
c)
evaporation
d)

Boiling

10.
What is happening at the flat lines on the heating curve of water?
a)
temperature increase
b)
phase change
c)
melting 
d)
boiling
11.

Between which two points is Heat of Vaporization?

a)

A <----> B

b)

B <----> C

c)

C <----> D

d)

D <----> E

e)

E <----> F

12.

Between which two points is the solid melting?

a)

A <---- B

b)

B <----> C

c)

C <---- D

d)

D <----> E

e)

E <---- F

13.

What is the flow of energy when the cup of coffee cools down?

a)

Energy leaves the coffee to the room

b)

Energy from the room enters the coffee

c)

Energy is everywhere and doesn't change

14.
Which states of matter have a set volume?
a)
Solid
b)
Liquid
c)
Gas
d)
Solid and Liquid
15.
The Kinetic Molecular Theory states that molecules are...
a)
stationary
b)
sometimes moving
c)
always moving
d)
stationary and moving
16.

Two types of pure substances.

a)

protons and neutrons

b)

elements and compounds

c)

mixtures and compounds

d)

elements and mixtures

17.
What is the symbol for Thermal Energy?
a)
Q
b)
t
c)
m
d)
C
18.
Define a liquid.
a)
Indefinite shape, indefinite volume
b)
Definite shape, definite volume
c)
Found in stars
d)
Definite volume, indefinite shape
19.
What unit do you use to measure Thermal Energy?
a)
J/Kg ºC
b)
Kg
c)
ºC
d)
J
20.

The specific heat of platinum is 0.133 J/g°C. How much heat(Q) is absorbed when a 10 g piece of platinum warms from 100°C to 150°C?

a)

66.5 J

b)

665 J

c)

0.0266 J

d)

0.665 J

21.

If 20 g of water undergoes a temperature change from 25° C to 30° 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

22.

Calculate the energy transferred when raising the temperature of 16000g of water by 3˚C

a)

785 J

b)

126000J

c)

22000J

d)

200640 J

23.
The Kinetic Molecular Theory states that molecules are...
a)
stationary
b)
sometimes moving
c)
always moving
d)
stationary and moving
24.
How much energy is required to melt a 20.0 g bag of ice at 0°C? (Hf of water = 334J/g and Hv of water = 2260 J/g)
a)
16.7 J
b)
113 J
c)
6680 J
d)
45200 J
25.
Calculate the mass needed to convert water to gas with 65217 joules of energy. (Hf of water = 334J/g and Hv of water = 2260 J/g)
a)
195.3 grams
b)
28.9 grams
c)
21,782,478 grams
d)
147,390,420 grams
26.

If a cup of coffee at 75 degrees C is left on the counter and cools down to room temperature, what equation would you use to solve for energy?

a)

Q=mcΔT

b)

Q=mHf

27.

What does the law of conservation of matter and energy say?

a)

that matter changes phase when it absorbs thermal or heat energy

b)

that all matter melts when heated

c)

that matter and energy cannot be created or destroyed, but just transformed from one form into another

d)

that energy causes motion in matter

28.

What phase change happens when water is heated on a stove until it disappears?

a)

Vaporization (liquid to gas)

b)

melting (solid to liquid)

c)

freezing (liquid to solid)

d)

sublimation (solid to gas)

29.
Gas particles have the ________ kinetic energy because they move the fastest.
a)
least
b)
most
30.
Liquids and gases are similar because __________________________.
a)
they both take the shape of their container
b)
they both have their own shape
c)
liquids pour and gases don't
d)
liquids take the shape of the container but gases have their own shape
31.
Which state of matter?
a)
Solid
b)
Liquid
c)
Gas
d)
Texas
32.
When thermal energy is added to a substance, the substance's particles move: 
a)
More rapidly at an increased distance from each other
b)
More rapidly with less distance between each other
c)
More slowly with a greater distance between each other
d)
More slowly with a reduced distance be
33.

"Kinetic" refers to

a)

motion

b)

heat

c)

density

d)

forces

34.

During a PHASE CHANGE, like freezing, temperature...

a)

increases.

b)

decreases.

c)

does NOT change.

d)

varies.

35.
Melting, evaporation, and sublimation are all examples of ___________ phase changes. 
a)
Endothermic
b)
Exothermic 
36.
What is happening at the flat lines on the heating curve of water?
a)
temperature increase
b)
phase change
c)
melting 
d)
boiling
37.

The phase change when a liquid becomes a gas.

a)

melting

b)

condensation

c)

sublimation

d)

evaporation

38.

The phase change when a gas becomes a liquid.

a)

condensation

b)

evaporation

c)

deposition

d)

sublimation

39.

What is it called when a solid turns directly into a gas?

a)

Sublimation

b)

Condensation

c)

Melting

d)

Freezing

40.

What is it called when Gas change to Solid.

a)

Sublimation

b)

Condensation

c)

Deposition

d)

Freezing

41.

What is it called when Solids change to Liquids.

a)

Sublimation

b)

Evaporation

c)

Melting

d)

Freezing

42.

All phase changes (changing states) requires energy to be added or taken away.

a)

True

b)

False

43.

Matter can change phases by changing the amount of _____.

a)

molecules

b)

matter

c)

energy

d)

phase

44.

This is when heat is absorbed, it is an

a)

Exothermic reaction

b)

endothermic reaction

c)

both

d)

none

45.

When heat is released it is an

a)

exothermic reaction

b)

endothermic reaction

c)

both

d)

none

46.

In a heating curve, diagonal lines indicate temperature is __________, while flat lines indicate temperature is __________.

a)

Constant, changing

b)

Changing, constant

47.

At which letter is the substance changing its state of matter?

a)

A only

b)

A, C, and E

c)

D and E

d)

B and D

48.

How many states of matter are present during line segment BC?

a)

One

b)

Two

c)

Three

d)

Depends on the temperature

49.

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.

50.

What is holding molecules in a solid close to each other?

a)

Intermolecular forces

b)

Chemical Bonds

c)

Heat

d)

Cold

51.

What is true about intermolecular forces in gases

a)

they have been broken by heat

b)

They are very strong

c)

They cannot be put back together

d)

they represent a chemical change

52.
What is room temperature?
a)
0 Degrees Celsius
b)
20 Degrees Celsius
c)
100 Degrees Celsius
53.
At what temperature does water boil?
a)
0 Degrees Celsius
b)
20 Degrees Celsius
c)
100 Degrees Celsius
54.
At what temperature does water freeze?
a)
0 Degrees Celsius
b)
20 Degrees Celsius
c)
100 Degrees Celsius
55.

In which phase are intermolecular forces the strongest?

a)

solid

b)

liquid

c)

gas

56.

What is happening at point B if heat is entering the matter?

a)

melting

b)

freezing

c)

evaporating

d)

condensing

57.

What is happening at point B is heat is leaving the matter?

a)

melting

b)

freezing

c)

evaporating

d)

condensing

58.

What is happening at point D as heat is removed?

a)

evaporating

b)

condensing

c)

boiling

d)

melting

59.

What describes temperature?

a)

The average kinetic energy of the particles

b)

The total kinetic energy of the particles

c)

The transfer of kinetic energy from one substance to another

d)

The average of the beat, rhymes, and punchlines in a freestyle.

60.

At which points can the temperature change?

a)

1

b)

2

c)

3

d)

4

e)

5

61.

At which points is the phase changing?

a)

1

b)

2

c)

3

d)

4

e)

5

62.

From point A to point E, the sample is going through an

a)

exothermic process by releasing heat to the surroundings

b)

exothermic process by absorbing heat from the surroundings

c)

endothermic process by releasing heat to the surroundings

d)

endothermic process by absorbing heat from the surroundings

63.
For the formula:
 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
64.

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? (show your work)

a)

-80,256 J

b)

80.256 J

c)

80,256 J

d)

-80.256 J

65.
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
66.

What does "ΔT" mean?

a)

A change in health

b)

A change in heat

c)

A change in height

d)

A change in temperature

67.
The symbol for specific heat is .......
a)
c
b)
Q
c)
m
d)
t
68.

Which of the following is true of the Celsius scale?

a)

212o is the boiling point of water

b)

0 degrees is absolute zero

c)

0 degrees is the freezing point of water

d)

32o is the freezing point of water

69.

No more energy can be removed from matter at (where particles cease to move)

a)

its freezing point

b)

0oC

c)

absolute zero

d)

273 K

70.

The more particles a substance has at a given temperature,

a)

the higher its temperature

b)

the more thermal energy it has

c)

the more degrees it has

d)

the more Kelvin it has

71.

Heat, like work, is an energy transfer measured in

a)

watts

b)

degrees

c)

Joules

d)

Kelvin

72.

The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 Kelvin is called its

a)

heat transfer

b)

specific heat

c)

change of state

d)

melting point

73.
A measure of the average kinetic energy of the individual particles in an object is called:
a)
thermal energy
b)
conduction
c)
convection
d)
temperature
74.

Observe the diagram. Which statement is true about the kinetic energy of the molecules in the containers?

a)

The molecules are moving faster in Diagram A

b)

The molecules are moving slower in Diagram A

c)

The molecules are moving at the same rate in both diagrams

75.
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
76.
There are four cups of hot cocoa. The cup sizes are shown. The temperature of the cocoa in each cup is 25 degrees celsius. Which cup has the MOST thermal energy?
a)
Large cup (Trenta)
b)
Small cup (Tall)
c)
Venti
d)
All three are the same temperature so they have same thermal energy
77.

Which description defines heat?

a)

total thermal energy of an object or substance

b)

change in the temperature of a substance in degrees Celsius

c)

energy transferred between objects at different temperatures

d)

average kinetic energy of the particles that make up a substance

78.

Between which points is the KE 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

79.

Between which points is the PE 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

80.

What is the formula to calculate heat energy required to raise the temperature of any substance?

a)

Q = m C ∆T

b)

Q = m Hv

c)

Q = ½ m v

d)

m = Q Hf

81.

In heat capacity equations, what does the triangle represent?

a)

Temperature

b)

energy

c)

mass

d)

change in

e)

change in temp

82.

The heat absorbed by melting a solid is known as

a)

heat of fusion

b)

heat of solid

c)

heat of liquid

d)

heat of vaporization

83.

Sections A, C, and E represent....

a)

States of matter

b)

Phase changes

84.

Sections B and D represent....

a)

States of matter

b)

Phase changes

85.

What particle diagram represents this substance during line segment CD

a)
b)
c)
d)
e)
86.
In which segment is the kinetic energy remaining constant?
a)
A-B
b)
B-C
c)
C-D
d)
E-F
87.

During which line segment(s) is Kinetic Energy Increasing and Potential Energy remaining constant?

(select ALL correct answers)

a)

AB

b)

BC

c)

CD

d)

DE

e)

EF

88.

During which line segment(s) is Kinetic Energy remaining constant and Potential Energy is increasing?

(select ALL correct answers)

a)

AB

b)

BC

c)

CD

d)

DE

e)

EF

89.

Which of the following accurately describes the energy of the particles during line segment BC?

a)

Potential energy is increasing while kinetic energy is decreasing.

b)

Kinetic energy is increasing while potential energy is decreasing.

c)

Kinetic energy is increasing while potential energy remains constant.

d)

Potential energy is increasing while kinetic energy remains constant.

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