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matter and change (Amplify Phase Change)

Total questions: 191

Worksheet time: 2hrs 43mins

Name
Class
Date
1.
In a solid, the particles
a)
vibrate in place
b)
slide past one another
c)
overcome the strong attraction
2.
A gas
a)
has a definite shape but no definite volume
b)
has a definite volume but no definite shape
c)
has fast-moving particles
3.
The reverse of condensation is
a)
sublimation
b)

evaporation

c)
boiling
4.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
5.
Balloons can be twisted into shapes because
a)
the force exerted changes the number of particles
b)
the volume of a gas is constant
c)
particles of gas can be compressed
6.
Which of the following occurs when a liquid becomes a gas?
a)
the particles slow down
b)
the particles beak away from one another
c)
the particles move closer together
7.
What term describes a solid changing to a liquid?
a)
Deposition
b)
Sublimation
c)
Freezing 
d)
Melting
8.
How is a solid defined?
a)
Indefinite shape and indefinite volume
b)
Definite shape and definite volume
c)
Found in the stars
d)
Definite volume, indefinite shape
9.
How is a gas defined?
a)
Indefinite shape, indefinite volume
b)
Definite shape, definite volume
c)
Found in stars
d)
Definite volume, indefinite shape
10.
Define a liquid.
a)
Indefinite shape, indefinite volume
b)
Definite shape, definite volume
c)
Found in stars
d)
Definite volume, indefinite shape
11.
What term describes a liquid changing to a gas?
a)
Deposition
b)
Sublimation
c)
Freezing
d)
Evaporation
12.
What term describes a solid changing to a gas?
a)
Deposition
b)
Sublimation
c)
Evaporation
d)
Freezing
13.
What term describes a liquid changing to a solid?
a)
Deposition
b)
Sublimation
c)
Evaporation
d)
Freezing
14.
What term describes a gas changing to a liquid?
a)
Deposition
b)
Sublimation
c)
Evaporation
d)
Condensation
15.
What is vaporization?
a)
a gas becoming a liquid
b)
a liquid becoming a solid
c)
a gas becoming a solid
d)
a liquid becoming a gas
16.
Molecules are closest together in a 
a)
Solid
b)
Liquid
c)
Gas
17.
4. What type of state of matter is a gas that has electrons flowing through it?
a)
Gas
b)
Liquid
c)
Plasma
d)
Solid
18.
7. All phase changes (changing states) requires energy to be added or taken away.
a)
True
b)
False
19.
The phase change from water vapor to liquid water is known as...
a)
evaporation
b)
precipitation
c)
condensation
d)
sublimation
20.
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
21.
Which of the following is NOT a type of vaporization.
a)
Boiling
b)
Evaporizing
c)
sublimating
22.
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
23.
Results in the formation of one or more new substances with new chemical and physical properties. 
a)
Chemical Change
b)
Physical Change
c)
Positive Change
d)
Negative Change
24.
The change in one or more visual properties (example: change in size, color, text or state)
a)
Chemical Change
b)
Physical Change
c)
Positive Change
d)
Negative Change
25.
The property of metals that allow them to be drawn into a wire
a)
Density
b)
Malleability
c)
Ductility
d)
Instability
26.
The property of metals that allow them to be hammered into flat sheets
a)
Density
b)
Malleability
c)
Ductility
d)
Instability
27.
The property that describes the relationship between the mass of a material and its volume (D=M/V)
a)
Density
b)
Malleability
c)
Ductility
d)
Speed
28.
The characteristics of a material that become evident when the material undergoes a chemical reaction. Cannot be physically observed.
a)
Physical Properties
b)
Chemical Properties
c)
Positive Properties
d)
Neutral Properties
29.
Can be observed or measured without changing the composition of the matter of the substance; includes appearance, texture, color, odor, and others.
a)
Neutral Properties
b)
Positive Properties
c)
Chemical Properties
d)
Physical Properties
30.
A state of matter in which the particles are locked in position and can only vibrate
a)
Liquid
b)
Gas
c)
Solid
d)
Steam
31.
A scientific principle stating that mass cannot be created nor destroyed within a closed system
a)
Conservation of Energy
b)
Conservation of Science
c)
Conservation of Atomics
d)
Conservation of Mass
32.
A measure of the amount of matter contained a physical object.
a)
Matter
b)
Volume
c)
Mass
d)
Density
33.
Anything that occupies space, has mass, and can exist as a solid, liquid, or gas
a)
Valence
b)
Density
c)
Mass
d)
Matter
34.
Boiling point of water is
a)
0 0C
b)
100 0C
35.
The type of vaporization that only happens within the surface of the liquid.
a)
Evaporation
b)
Boiling
c)
Condensation
d)
Sublimation
36.
Freezing point of water
a)
0 0C
b)
100 0C
37.
A shrinking puddle is an example of ___________, or vaporization that takes place only on the surface of a liquid.
a)
evaporation
b)
boiling
c)
freezing
d)
melting
38.
An uncovered pot of soup is simmering on Mr. Arvizu's stove, and there are water droplets on the wall behind it.  What sequence can you infer has occurred?
a)
vaporization, then condensation
b)
freezing, then thawing
c)
condensation, then vaporization
d)
Mr. Arvizu is a mess
39.
is a liquid’s resistance to flowing. 
a)
miscosity 
b)
viscosity
c)
surface tension
d)
syrup
40.
The temperature at which solid melts.
a)
melting point
b)
boiling point
c)
freezing point
d)
condensation point
41.
The particles of this solid are not arranged in a regular pattern, such as plastic,   rubber, and glass. 
a)
Crystalline Solid
b)
Amorphous Solid
c)
Solid Particles
d)
Dry Ice
42.
Volume is ______________.
a)
length X width
b)
height X length
c)
length X width X height
d)
width X height
43.
At 212 degrees Fahrenheit, water __________________.
a)
freezes
b)
stays the same
c)
boils
d)
turns to Coke
44.
Water in its solid form is _____________.
a)
a vapor
b)
ice
c)
a liquid
d)
boiling
45.
Liquid matter takes the shape of _______.
a)
a gas
b)
water
c)
a pet
d)
Its container
46.
The ability of a metal to allow heat or electricity to pass through it.
a)
conductivity
b)
insulator
c)
mass
d)
density
47.
A watermelon has more matter than a grape, so it has more
a)
mass
b)
eat
c)
solid
d)
greater
48.
Iron + oxygen = rust is an example of a ___________.
a)
physical property/change
b)
chemical property/change
c)
mass
d)
volume
49.
Shape is a ____ that helps identify an object.
a)
physical property
b)
chemical property
c)
mass
d)
matter
50.
The amount of space something takes up
a)
density
b)
volume
c)
mass
d)
matter
51.
A measure of how much mass is contained in a given unit of volume.
a)
mass
b)
density
c)
volume
d)
matter
52.
2 meters = ____________ centimeters
a)
100
b)
20
c)
200
d)
2000
53.
Which of the following is an example of a chemical property?
a)
melting
b)
bending a paper clip
c)
rusting
d)
boiling water
54.
Texture, color, states of matter, flexibility, freezing & melting points
a)
Chemical Properties
b)
Physical Properties
c)
States of Mass
d)
Scientific matterology
55.
Cutting an orange is a physical change.
a)
True
b)
False
56.
An example of a physical property is 
a)
flammability
b)
acidic
c)
color
d)
ability to rust
57.
What causes a change in the state of matter?
a)
physical properties
b)
chemical energy
c)
temperature
58.
Chopping wood is an example of a:
a)
Physical change
b)
Chemical change
59.
Burning wood to ash is an example of a:
a)
Physical change
b)
Chemical change
60.
Water freezing to ice is an example of a:
a)
Physical change
b)
Chemical change
61.
Smashing a piece of candy into smaller pieces is an example of a:
a)
Physical change
b)
Chemical change
62.
Adding HEAT to matter causes its particles to:
a)
move faster and farther apart
b)
Move slower and farther apart
c)
Move faster and closer together
d)
Move slower and closer together
63.
A student kept a notebook during an investigation. Which recorded observation was most likely a physical change?
a)
The solution was heated for two minutes until it boiled
b)
A solid formed when two liquids were mixed together
c)
Two solutions were mixed and the resulting solution felt hot
d)
The color of two mixed solutions changed from clear to white
64.
Which best represents a physical property of a substance?
a)
Acids act as a corrosive to metal
b)
Gold has a density of 19.3 g/cm3
c)
Sodium combines with chlorine to create sodium chloride
d)
Hydrochloric acid reacts with zinc metal creating hydrogen gas
65.
Which is NOT a state of matter
a)
solid
b)
gas
c)
mass
d)
liquid
66.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
67.
What could be occurring between point B and C?
a)
melting
b)
material is getting softer
c)
freezing
d)
material is warming up
68.
What could be occurring at point E?
a)
boiling
b)
material is getting softer
c)
freezing
d)
material is warming up
69.
What phase of matter is illustrated in "C"
a)
solid
b)
liquid
c)
gas
d)
melting
70.
What is labelled "B" on the graph?
a)
solids
b)
liquids
c)
gases
d)
a phase change
71.
What is happening at "D" on the graph?
a)
Water is boiling
b)
water is evaporating
c)
water is melting
d)
the sublimation of water
72.
Which box has a higher density?  
a)
Box A
b)
Box B
c)
cannot be determined
d)
they are the same
73.
Point "B" is known as the:
a)
melting point
b)
freezing point
c)
boiling point
d)
both freezing and melting point.
74.
At which point is this substance a liquid?
a)
A
b)
C
c)
E
75.
a)
Freezing
b)
Melting
c)
Condensation
d)
Evaporation
76.
What causes a phase change?
a)
Motion
b)
Speed
c)
Energy
d)
Friction
77.
Which two phases changes add energy?
a)
Freezing, Melting
b)
Condensation, Evaporation
c)
Freezing, Condensation
d)
Melting, Evaporation
78.
Which two phases changes takes away energy?
a)
Freezing, Melting
b)
Condensation, Evaporation
c)
Freezing, Condensation
d)
Melting, Evaporation
79.
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
80.
Why does the graph have two flat lines at "b" and "d"?
a)
Those are times when we took the water off the hot plate
b)
Those are phase changes where temperature doesn't change while adding heat
c)
The line is flat because the water is all in the solid or gas phase
d)
The line is flat because temperature increases the most at those locations
81.
When the temperature of matter increases the particles...
a)
speed up and move closer
b)
speed up and move farther apart
c)
slow down and move closer together
d)
slow down and move farther apart
82.
In which segment is the kinetic energy remaining constant?
a)
A-B
b)
B-C
c)
C-D
d)
E-F
83.
What is boiling water in Fahrenheit?
a)
212
b)
112
c)
100
d)
50
84.
What is freezing in Celsius?
a)
32
b)
35
c)
0
d)
-5
85.
Thermal energy ALWAYS moves from _____ to _____.
a)
solid to liquid
b)
ice to water
c)
hot to cold
d)
solid to gas
86.
All matter is made of _____ that are constanly moving.
a)
insulators
b)
particles
c)
convection
d)
pieces of plastic
87.
When holding a cup of ice water, your warm hand becomes cold. How does the heat transfer?
a)
From the cold cup to your hand
b)
From the cold cup to the warm air
c)
From the ice to your hand
d)
From your warm hand to the cold cup.
88.
The measure of average kinetic energy of all the particles within an object is called ____________. 
a)
temperature
b)
conduction
c)
radiation
d)
heat 
89.

amount of matter an object contains

a)

distillation

b)

mass

c)

chemical reaction

d)

compound

e)

homogeneous

90.

A golf ball has more mass than a tennis ball because it ____.

a)

takes up more space

b)

contains more matter

c)

has a definite composition

d)

contains different kinds of matter

91.

All of the following are physical properties of matter EXCEPT ____.

a)

mass

b)

color

c)

melting point

d)

ability to rust

92.

Which of the following is NOT a physical property of water?

a)

It has a boiling point of 1000C.

b)

It is a colorless liquid.

c)

It is composed of hydrogen and oxygen.

d)

Sugar dissolves in it.

93.

Which of the following are considered physical properties of a substance?

a)

color and odor

b)

malleability and hardness

c)

malleability and hardness

d)

all of the above

94.

Which state of matter is characterized by having an indefinite shape, but a definite volume?

a)

gas

b)

liquid

c)

solid

d)

none of the above

95.

The way molecules in a substance move around relative to each other

a)

Kinetic Energy

b)

Molecule

c)

Phase

d)

Freedom of Movement

96.

The energy that an object has because it is moving

a)

Molecule

b)

Refute

c)

Density

d)

Kinetic Energy

97.

A pull between two molecules that is always the same for a substance

a)

Kinetic Energy

b)

Molecular Attraction

c)

Molecule

d)

Mixture

98.

A group of atoms joined together in a particular way

a)

Scale

b)

Refute

c)

Mass

d)

Molecule

99.

A noticeably different form or state of the same substance

a)

Mixture

b)

Phase

c)

Mass

d)

Density

100.

A measure of how hot or cold something is

a)

Phase

b)

Molecule

c)

Density

d)

Temperature

101.

To provide evidence that goes against a claim

a)

Mixture

b)

Refute

c)

Claim

d)

Sclae

102.

Scientists digging in a cave found an unknown substance. The scientists found that the substance’s molecules were moving around each other. The scientists increased the speed of the substance’s molecules and caused a phase change. How did the scientists do this, and how did this affect the substance?

The scientists transferred energy . . .

a)

into the substance, and the substance changed into a gas

b)

into the substance, and the substance changed into a liquid.

c)

out of the substance, and the substance changed into a solid.

d)

out of the substance, and the substance changed into a liquid

103.

The medicine in the diagram above has molecules that are moving around each other. The doctor needs to slow down the molecules enough to cause a phase change. How will she do this, and how will this affect the medicine?

She transfers energy . . .

a)

into the medicine until it is a liquid.

b)

into the medicine until it is a gas.

c)

out of the medicine until it is a solid.

d)

out of the medicine until it is a liquid.

104.

Anh measured the temperature of a pond near his house. Before he left for school, the water in the pond was 18°C. When he came home from school, the temperature of the pond was higher than it was in the morning. What happened to the water molecules while he was at school?

a)

The molecules got closer together.

b)

The molecules started moving faster.

c)

The water lost cold molecules.The water lost cold molecules.

d)

The molecules became larger.

105.

How is the kinetic energy of molecules changing when the molecules move faster?

The kinetic energy . . .

a)

is not changing.

b)

is increasing.

c)

depends on the molecules.

d)

is decreasing.

106.

A cook had a jar containing a sweet food and a jar containing a sour food. The image above shows the sweet and sour foods. At room temperature, both foods are liquids. The same amount of energy was transferred into both substances. Later, one of the foods had changed phase while the other had not. Which food changed phase, and how did it change?

a)

The sweet food changed because the molecules were able to move fast enough to overcome the attraction between them. Its molecules now move away from each other.

b)

The sweet food changed because the strong attraction between molecules made their movement slower. Its molecules now move around each other.

c)

The sour food changed because the weak attraction between molecules let them move faster. Its molecules now move away from each other.

d)

The sour food changed because the molecules were able to move fast enough to overcome the attraction between them. Its molecules now move in place.

107.

A student left a sealed jar of water outside her home. Water can be a solid, liquid, or gas. When she put it outside, the water was a solid. Twelve hours later, the water had changed phase and was a liquid. What happened to the water molecules?

a)

Before the student left, the molecules were moving in place. After, the molecules were moving around each other.

b)

Before the student left, the molecules were moving around each other. After, the molecules were moving away from each other.

c)

Before the student left, the molecules were moving around each other. After, the molecules were moving in place.

d)

Before the student left, the molecules were moving away from each other. After, the molecules were moving around each other.

108.

The fuel tank of an airplane has a device that measures the fuel’s temperature. Before the airplane took off, the temperature of the fuel was 27°C. After the airplane had been flying for one hour, the temperature of the fuel had decreased to 3°C. Which of the following must have happened to the molecules of the fuel?

a)

The molecules got farther apart.

b)

The molecules started moving slower.

c)

The fuel gained cold molecules.

d)

The molecules became smaller in size.

109.

Lily is doing a science experiment with a substance in a sealed jar. At first, the substance’s molecules are moving around each other. What will happen to Lily’s substance if she transfers energy into the substance and causes a phase change?

After the phase change, the substance’s molecules will move . . .

a)

faster, and the substance will be a liquid.

b)

faster, and the substance will be a gas.

c)

slower, and the substance will be a solid.

d)

slower, and the substance will be a liquid.

110.

The diagram above describes the movement of molecules in a substance used to make fuel. What change did the fuel scientist observe in the substance?

a)

Before the process, the substance was a solid. After the process, it was a liquid.

b)

Before the process, the substance was a gas. After the process, it was a liquid.

c)

Before the process, the substance was a liquid. After the process, it was a solid.

d)

Before the process, the substance was a liquid. After the process, it was a gas.

Before the process, the substance was a liquid. After the process, it was a gas.

111.

Jamil’s bicycle is made of aluminum. When are the aluminum molecules in his bicycle moving?

The aluminum molecules are . . .

a)

only moving when Jamil is riding his bicycle.

b)

only moving when Jamil is not riding his bicycle.

c)

always moving.

d)

never moving.

112.

Divers found two substances on the bottom of the ocean. At room temperature, both substances are liquid. Scientists then transferred the same amount of energy out of both substances. When a scientist checked again, Substance 1 had changed phase, but Substance 2 had not. How are Substances 1 and 2 different?

Substance 1 has a . . .

a)

weaker attraction between its molecules than Substance 2. Its molecules now move in place.

b)

weaker attraction between its molecules than Substance 2. Its molecules now move around each other.

c)

stronger attraction between its molecules than Substance 2. Its molecules now move away from each other.

d)

stronger attraction between its molecules than Substance 2. Its molecules now move in place.

113.

A scientist did a test to compare two substances: substance Q and substance R. At room temperature, both substances are liquid. When the scientist transferred the same amount of energy out of both substances, only one substance changed phase while the other did not. Which substance changed phase, and how did it change?

a)

Substance Q changed phase because the attraction of the molecules was able to overcome their slower movement. Its molecules now move in place.

b)

Substance Q changed phase because the strong attraction between molecules made their movement slower. Its molecules now move in place.

c)

Substance R changed phase because the weak attraction between molecules let them move faster. Its molecules now move around each other.

d)

Substance R changed phase because the attraction was able to overcome the slower molecules. Its molecules now move away from each other.

114.

Scientists put a sample of water into a sealed tank. Water can be a solid, liquid, or gas. At first, the water was a liquid. Then, the scientists transferred energy out of the substance, and the water changed phase. What happened to the movement of the water molecules?

After the phase change, the water molecules moved . . .

a)

faster and started moving away from each other.

b)

faster and started moving around each other.

c)

slower and started moving in place.

d)

slower and started moving around each other.

115.
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
116.

How do the molecules in a gas behave?

a)

move in place

b)

move around each other

c)

move away from each other

d)

do not move

117.

You have two substances at room temperature. Both substances are a liquid. You transfer the same amount of energy out of both substances but only one substance changes phase. What happened?

a)

the substance with the weaker attraction will change to a gas

b)

the substance with the stronger attraction will turn to a solid

c)

the substance with the stronger attraction will turn to a gas

d)

the substance with the weaker attraction will turn to a solid

118.

How do the molecules in a solid behave?

a)

Move around each other

b)

move in place

c)

Moving away from each other

d)

Do not move

119.

If you transfer energy into a substance how will the molecules change?

a)

molecules will move faster

b)

molecules will move slower

c)

molecules will stop moving

120.

If you transfer energy out of a substance how will the movement of the molecules change?

a)

molecules will move faster

b)

molecules will move slower

c)

molecules will stop moving

d)

molecules do not move

121.
When a substance melts, the kinetic energy _____________.
a)
decreases
b)
stays the same
c)
increases
d)
decreases then increases
122.
When molecules flow around each other, they are in this phase
a)
solid
b)
liquid
c)
gas
d)
plasma
123.
The molecules in this picture are in what phase?
a)
solid
b)
liquid
c)
gas
d)
plasma
124.
What takes place when a liquid changes to a solid?
a)
condensation
b)
melting
c)
evaporation
d)
freezing
125.
Matter can not be created nor destroyed: it can only be
a)
Destroyed a little bit
b)
Invisible
c)
Transformed, changed
d)
None of the above
126.
Which of these is not a chemical reaction?
a)
Burning of wood
b)
Milk going bad
c)
Mixing vinegar and baking soda
d)
Melting of ice
127.
A precipitate is a 
a)
liquid that forms when two solids are reacted
b)
a solid that forms when two liquids are mixed
c)
a gas that forms when vinegar and baking soda react
d)
a change of color in a solution
128.
If reaction starts with 20g of reactants it should produce 
a)
a total of 40g of products
b)
a total of 10g of products
c)
a total of 80 g of products
d)
a total of 20g of products
129.
What will weigh more when a chemical change is complete?  The reactants before the chemical reaction, or the product after the reaction is complete?
a)
They both will weigh the same
b)
The product always weighs more than the reactant
c)
The reactant will weigh more than the product
d)
They both will loose mass after the reaction
130.
What is the Law of Conservation of mass?
a)
Mass is created in a chemical reaction
b)
Mass is created in a physical change
c)
New chemicals formed from a chemical reaction have a larger overall mass than the original reactants
d)
Mass is never created or destroyed
131.
A 500-gram block of solid cheese is melted in a pot. Which is most likely the mass of the cheese after it is melted?
a)
500 grams, because the cheese does not gain or lose mass just because it was melted
b)
499 grams, because some of the cheese evaporates as it melts
c)
502 grams, because the cheese absorbs heat as it melts
132.
A student notices that an inflated balloon gets larger when it is warmed by a lamp. Which best describes the mass of the balloon as a result of this change?
a)
The mass of the balloon increases because the size of the balloon has increased.
b)
The mass of the balloon increases because the temperature of the balloon has increased.
c)
The mass of the balloon stays the same because the gas inside the balloon still has the same mass after it warms up.
133.

When a log is burned, what happens to the wood?

a)

The mass stays the same, but becomes smoke and ash.

b)

It disappears.

c)

The mass changes as it goes away.

d)

Nothing. You're imagining things.

134.

If the temperature is below the melting point of a substance and below the boiling point of a substance what state will it be in?

a)

Solid

b)

Liquid

c)

Gas

135.

If the temperature is above the melting point of a substance and above the boiling point of a substance what state will it be in?

a)

Solid

b)

Liquid

c)

Gas

136.

A substance has a melting point of 25 oC and a boiling point of 235 oC. What state is it at 5oC?

a)

Solid

b)

Liquid

c)

Gas

137.

A substance has a melting point of -25 oC and a boiling point of 35 oC. What state is it at 25oC?

a)

Solid

b)

Liquid

c)

Gas

138.
Freezing point of water is
a)
100 degrees Celsius
b)
0 degrees Celcius
c)
0 degrees Fahrenheit
139.
The freezing and melting points of water are the same.
a)
True
b)
False
140.
What is happening at the boiling point?
a)
liquid to gas
b)
gas to liquid
c)
solid to liquid
d)
liquid to solid
141.
When the temperature of matter increases the particles...
a)
speed up and move closer
b)
speed up and move farther apart
c)
slow down and move closer together
d)
slow down and move farther apart
142.

The weaker the intermolecular forces of a substance the _____________ the boiling point

a)

higher

b)

lower

143.

A student observed a liquid that boiled at 100°C. What type of liquid was boiling?

a)

Salt water

b)

Sugar water

c)

Pure water

d)

Lemon water

144.

A property that can be observed without changing the matter being studied.

a)

Physical property

b)

Chemical property

145.

Any substance that occupies space and has mass.

a)

Matter

b)

Density

c)

Melting point

d)

Rusting

146.

Properties that include the ability to burn and the ability to rust.

a)

Physical property

b)

Chemical property

147.

Scientists digging in a cave found an unknown substance. The scientists found that the substance’s molecules were moving around each other. The scientists increased the speed of the substance’s molecules and caused a phase change. How did the scientists do this, and how did this affect the substance?

The scientists transferred energy . . .

a)

into the substance, and the substance changed into a gas

b)

into the substance, and the substance changed into a liquid.

c)

out of the substance, and the substance changed into a solid.

d)

out of the substance, and the substance changed into a liquid

148.

Scientists digging in a cave found an unknown substance. The scientists found that the substance’s molecules were moving around each other. The scientists increased the speed of the substance’s molecules and caused a phase change. How did the scientists do this, and how did this affect the substance?

The scientists transferred energy . . .

a)

into the substance, and the substance changed into a gas

b)

into the substance, and the substance changed into a liquid.

c)

out of the substance, and the substance changed into a solid.

d)

out of the substance, and the substance changed into a liquid

149.

The medicine in the diagram above has molecules that are moving around each other. The doctor needs to slow down the molecules enough to cause a phase change. How will she do this, and how will this affect the medicine?

She transfers energy . . .

a)

into the medicine until it is a liquid.

b)

into the medicine until it is a gas.

c)

out of the medicine until it is a solid.

d)

out of the medicine until it is a liquid.

150.

Anh measured the temperature of a pond near his house. Before he left for school, the water in the pond was 18°C. When he came home from school, the temperature of the pond was higher than it was in the morning. What happened to the water molecules while he was at school?

a)

The molecules got closer together.

b)

The molecules started moving faster.

c)

The water lost cold molecules.The water lost cold molecules.

d)

The molecules became larger.

151.

How is the kinetic energy of molecules changing when the molecules move faster?

The kinetic energy . . .

a)

is not changing.

b)

is increasing.

c)

depends on the molecules.

d)

is decreasing.

152.

A cook had a jar containing a sweet food and a jar containing a sour food. The image above shows the sweet and sour foods. At room temperature, both foods are liquids. The same amount of energy was transferred into both substances. Later, one of the foods had changed phase while the other had not. Which food changed phase, and how did it change?

a)

The sweet food changed because the molecules were able to move fast enough to overcome the attraction between them. Its molecules now move away from each other.

b)

The sweet food changed because the strong attraction between molecules made their movement slower. Its molecules now move around each other.

c)

The sour food changed because the weak attraction between molecules let them move faster. Its molecules now move away from each other.

d)

The sour food changed because the molecules were able to move fast enough to overcome the attraction between them. Its molecules now move in place.

153.

A student left a sealed jar of water outside her home. Water can be a solid, liquid, or gas. When she put it outside, the water was a solid. Twelve hours later, the water had changed phase and was a liquid. What happened to the water molecules?

a)

Before the student left, the molecules were moving in place. After, the molecules were moving around each other.

b)

Before the student left, the molecules were moving around each other. After, the molecules were moving away from each other.

c)

Before the student left, the molecules were moving around each other. After, the molecules were moving in place.

d)

Before the student left, the molecules were moving away from each other. After, the molecules were moving around each other.

154.

The fuel tank of an airplane has a device that measures the fuel’s temperature. Before the airplane took off, the temperature of the fuel was 27°C. After the airplane had been flying for one hour, the temperature of the fuel had decreased to 3°C. Which of the following must have happened to the molecules of the fuel?

a)

The molecules got farther apart.

b)

The molecules started moving slower.

c)

The fuel gained cold molecules.

d)

The molecules became smaller in size.

155.

Lily is doing a science experiment with a substance in a sealed jar. At first, the substance’s molecules are moving around each other. What will happen to Lily’s substance if she transfers energy into the substance and causes a phase change?

After the phase change, the substance’s molecules will move . . .

a)

faster, and the substance will be a liquid.

b)

faster, and the substance will be a gas.

c)

slower, and the substance will be a solid.

d)

slower, and the substance will be a liquid.

156.

The diagram above describes the movement of molecules in a substance used to make fuel. What change did the fuel scientist observe in the substance?

a)

Before the process, the substance was a solid. After the process, it was a liquid.

b)

Before the process, the substance was a gas. After the process, it was a liquid.

c)

Before the process, the substance was a liquid. After the process, it was a solid.

d)

Before the process, the substance was a liquid. After the process, it was a gas.

Before the process, the substance was a liquid. After the process, it was a gas.

157.

What happens to molecules when their kinetic energy decreases?

a)

They move slower.

b)

They move faster.

c)

They get heavier.

d)

It depends on the type of molecules.

158.

Jamil’s bicycle is made of aluminum. When are the aluminum molecules in his bicycle moving?

The aluminum molecules are . . .

a)

only moving when Jamil is riding his bicycle.

b)

only moving when Jamil is not riding his bicycle.

c)

always moving.

d)

never moving.

159.

Divers found two substances on the bottom of the ocean. At room temperature, both substances are liquid. Scientists then transferred the same amount of energy out of both substances. When a scientist checked again, Substance 1 had changed phase, but Substance 2 had not. How are Substances 1 and 2 different?

Substance 1 has a . . .

a)

weaker attraction between its molecules than Substance 2. Its molecules now move in place.

b)

weaker attraction between its molecules than Substance 2. Its molecules now move around each other.

c)

stronger attraction between its molecules than Substance 2. Its molecules now move away from each other.

d)

stronger attraction between its molecules than Substance 2. Its molecules now move in place.

160.

A scientist did a test to compare two substances: substance Q and substance R. At room temperature, both substances are liquid. When the scientist transferred the same amount of energy out of both substances, only one substance changed phase while the other did not. Which substance changed phase, and how did it change?

a)

Substance Q changed phase because the attraction of the molecules was able to overcome their slower movement. Its molecules now move in place.

b)

Substance Q changed phase because the strong attraction between molecules made their movement slower. Its molecules now move in place.

c)

Substance R changed phase because the weak attraction between molecules let them move faster. Its molecules now move around each other.

d)

Substance R changed phase because the attraction was able to overcome the slower molecules. Its molecules now move away from each other.

161.

Scientists put a sample of water into a sealed tank. Water can be a solid, liquid, or gas. At first, the water was a liquid. Then, the scientists transferred energy out of the substance, and the water changed phase. What happened to the movement of the water molecules?

After the phase change, the water molecules moved . . .

a)

faster and started moving away from each other.

b)

faster and started moving around each other.

c)

slower and started moving in place.

d)

slower and started moving around each other.

162.

The way molecules in a substance move around relative to each other

a)

Kinetic Energy

b)

Molecule

c)

Phase

d)

Freedom of Movement

163.

The energy that an object has because it is moving

a)

Molecule

b)

Refute

c)

Density

d)

Kinetic Energy

164.

A noticeably different form or state of the same substance

a)

Mixture

b)

Phase

c)

Mass

d)

Density

165.

To provide evidence that goes against a claim

a)

Mixture

b)

Refute

c)

Claim

d)

Sclae

166.

What happens to molecules when their kinetic energy decreases?

a)

They move slower.

b)

They move faster.

c)

They get heavier.

d)

It depends on the type of molecules.

167.
When molecules flow around each other, they are in this phase
a)
solid
b)
liquid
c)
gas
d)
plasma
168.
Sam had a solid and added energy to it. What did the molecules look like?
a)
The molecules moved in place.
b)
The molecules moved away from each other.
c)
The molecules didn't move.
d)
The molecules moved around each other.
169.
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
170.
Before: molecules move around each other, After: molecules move in place
a)
Before, the substance was a solid and later a liquid.
b)
Before,the substance was a gas, and later a liquid.
c)
Before, the substance was a liquid and later a solid.
d)
Before,the substance was a liquid, and later a gas.
171.

How do the molecules in a solid behave?

a)

Move around each other

b)

move in place

c)

Moving away from each other

d)

Do not move

172.

How do the molecules in a gas behave?

a)

move in place

b)

move around each other

c)

move away from each other

d)

do not move

173.

If you transfer energy into a substance how will the molecules change?

a)

molecules will move faster

b)

molecules will move slower

c)

molecules will stop moving

174.
When a substance melts, the kinetic energy _____________.
a)
decreases
b)
stays the same
c)
increases
d)
decreases then increases
175.
The molecules in this picture are in what phase?
a)
solid
b)
liquid
c)
gas
d)
plasma
176.
If this substance had kinetic energy ADDED, it would be in what phase?
a)
solid
b)
liquid
c)
gas
d)
plasma
177.
What takes place when a liquid changes to a gas?
a)
condensation
b)
melting
c)
evaporation
d)
freezing
178.
What is the average kinetic energy of a substance called?
a)
volume
b)
temperature
c)
pressure
d)
movement
179.
Which image represents the molecules of a liquid?
a)
A
b)
B
c)
C
180.
Which of the following images represents the freedom of movement of a gas?
a)
A
b)
B
c)
C
181.
The opposite phase of evaporation is 
a)
freezing 
b)
melting
c)
condensation 
182.

What do Earth and the moon Titan have in common?

a)

Both have seasons that last 3 - 4 months

b)

Both have liquid lakes and seas

c)

Both have atmospheres which rain methane

183.

Why do substances behave and look differently when they go through a phase change?

a)

molecules change into new substances after a phase change

b)

molecules are gained and lost during phase changes

c)

molecules of the substance move differently in each phase

184.

The following are examples of evidence of a chemical reaction....

a)

ice melting into a liquid

b)

condensation

c)

endothermic reaction

d)

change in color, production of gas bubbles

185.

When we combine baking soda and vinegar, it fizzes and eventually turn into a liquid. What is actually happening?

a)

baking soda melted into its liquid form

b)

baking soda combined with the vinegar produced a new substance

c)

evaporated into the air

186.

A green powder is heated & a gas is given off while it turns to a black solid. This describes

a)

Physical Change

b)

Chemical Change

c)

Change in State

d)

Change in Temperature

187.

The formation of a solid when two liquids combine is called?

a)

Solidification

b)

Freezing

c)

Precipitate

d)

Solubility

188.

Identify what type of change happening in the picture below...

a)

Chemical Reaction

b)

Physical Change

c)

Change in State

d)

Change in appearance only

189.

Identify what type of change happening in the picture below...

a)

Chemical Change

b)

Physical Change

c)

Endothermic Reaction

d)

Exothermic Reaction

190.

Which of the following is an example of a physical change?

a)

A glass falling and shattering on the floor.

b)

Baking a birthday cake.

c)

Burning a piece of paper.

d)

Baking soda and vinegar mixing together.

191.

When a new substance is formed with different properties than the original substance it is called a...

a)

Chemical change

b)

Physical change

c)

Change in State

d)

Change in appearance only.

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