Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
|
|
|
1.
|
Matter is defined as anything that
a. can be
seen and touched. b. has mass and takes up space. c. can be
weighed. d. contains kinetic or potential energy.
|
|
|
2.
|
A
substance that cannot be broken down into simpler substances is
a. a
compound. b. a mixture. c. an element. d. an
atom.
|
|
|
3.
|
The
chemical formula for water, H2O, means that each water molecule
contains
a. two hydrogen atoms and two oxygen atoms.
b. two hydrogen atoms and one oxygen atom. c. two hydrogen atoms and zero
oxygen atoms. d. one hydrogen atom and two oxygen atoms.
|
|
|
4.
|
You
put 1 gram of salt into 1 liter of water and stir. The resulting liquid is an example
of
a. a pure substance. b. a heterogeneous mixture.
c. a homogeneous mixture. d. an immiscible mixture.
|
|
|
5.
|
The
science of what matter is made of and how it changes is called
a. chemistry. b. physics.
c. kinetics. d. engineering.
|
|
|
6.
|
The
chemical element that is most abundant in the human body is
a. nitrogen. b. iron. c. carbon.
d. oxygen.
|
|
|
7.
|
The
smallest unit of a substance that behaves like the substance is
a. an
element. b. an atom. c. a molecule. d. a
compound.
|
|
|
8.
|
The
element that is most abundant in Earth is
a. iron. b. oxygen. c. silicon.
d. magnesium.
|
|
|
9.
|
The
chemical symbol for sulfuric acid is H2SO4. How many atoms are contained in
each molecule of sulfuric acid?
a. 3 b. 5
c. 6 d. 7
|
|
|
10.
|
The
chemical formula for table sugar is C12H22O11. How many oxygen atoms
are in each sugar molecule?
a. 2 b. 11
c. 12 d. 22
|
|
|
11.
|
A
material that can be represented by a chemical formula is
a. an
element. b. a mixture. c. a homogeneous solution.
d. a pure substance.
|
|
|
12.
|
Which
of the following is an example of a gas-liquid mixture?
a. the air
we breathe b. a carbonated drink c. soapsuds
d. ice cubes
|
|
|
13.
|
The
resistance of a fluid to flow is referred to as
a. pressure. b. energy.
c. viscosity. d. shape.
|
|
|
14.
|
Which
state of matter will hold its shape without a container?
a. solid b. liquid c. gas
d. plasma
|
|
|
15.
|
The
kinetic theory is useful for
a. determining how much heat is necessary to melt
a solid. b. explaining how matter and energy are related.
c. testing the temperature of a gas. d. showing the differences between states
of matter.
|
|
|
16.
|
The
kinetic theory states that the higher the temperature, the faster the
a. particles that make up a substance move. b. bonds between
atoms break down. c. molecules of gas rush together. d. lighter
particles within a substance clump together.
|
|
|
17.
|
The
change of a substance from a solid directly to a gas is called
a. condensation. b. evaporation.
c. melting. d. sublimation.
|
|
|
18.
|
The
ability to change or to move matter is referred to as
a. kinetic
theory. b. energy. c. evaporation.
d. heating.
|
|
|
19.
|
All
changes of the state of matter require
a. water. b. vibration. c. energy.
d. sublimation.
|
|
|
20.
|
Evaporation refers to the change of state from a
a. liquid
to a gas. b. gas to a liquid. c. solid to a liquid.
d. liquid to a solid.
|
|
|
21.
|
The
law of conservation of mass states that mass cannot be
a. burned. b. changed in form. c. created or
destroyed. d. heated or cooled.
|
|
|
22.
|
During a chemical or physical change, energy may be
a. created. b. destroyed. c. greatly increased
in strength. d. converted into another form.
|
|
|
23.
|
You
burn a log of wood, and only a small pile of ashes is left. What has
happened?
a. A large amount of mass has been lost. b. A
small amount of mass has been converted into a large amount of heat energy. c. The
total mass of the wood and oxygen is the same as the total mass of the ash and gases.
d. The total amount of energy is less than before.
|
|
|
24.
|
A
liquid changes rapidly into a gas at the liquid's
a. boiling
point. b. freezing point. c. melting point.
d. condensation point.
|
|
|
25.
|
Knowing the chemical properties of a substance will tell you how the
substance
a. looks. b. smells. c. can be
broken down into atoms. d. reacts with other substances.
|
|
|
26.
|
Which
of the following is not an example of a physical property?
a. freezing
point b. boiling point c. reactivity
d. density
|
|
|
27.
|
Lead
has a density of 11.3 g/cm3. What is the volume of a block of lead with a mass of 282.5
g?
a. 2.5 cm3 b. 25 cm3
c. 250 cm3 d. 2500 cm3
|
|
|
28.
|
A
substance has a mass of 360 g and a volume of 7.5 cm3. What is its
density?
a. 2700 g/cm3 b. 270
g/cm3 c. 480 g/cm3 d. 48
g/cm3
|
|
|
29.
|
Which
of the following is an example of a chemical change?
a. ice
melting b. paint fading c. pounding gold into a coin
d. a puddle of water evaporating
|
|
|
30.
|
Which
of the following is an example of a physical change?
a. dissolving salt in water b. burning wood into
charcoal c. cooking an egg d. rusting iron
|
|
|
31.
|
Ice
floats in water because it is
a. more dense than water.
b. less dense than water. c. colder than water. d. warmer than
water.
|
|
|
32.
|
Digesting food is an example of
a. physical
change. b. change of state. c. chemical change.
d. buoyancy.
|
|
|
33.
|
When
water is broken down, what happens to the oxygen and hydrogen atoms it is made
of?
a. They combine with oxygen in air to produce new substances.
b. They are rearranged to form hydrogen and oxygen gas c. They are
destroyed. d. They increase in size until they form a solid.
|
|
|
34.
|
Grinding quartz crystals down to produce sand is an example of
a
a. change of state. b. chemical change.
c. chemical reaction. d. physical change.
|
|
|
35.
|
The
tendency of a less dense substance to float in a more dense liquid is
called
a. viscosity. b. density.
c. sublimation. d. buoyancy.
|
Completion
Complete each sentence or
statement.
|
|
|
36.
|
Sound
is not made of matter because it has no ____________________.
|
|
|
37.
|
Aluminum, oxygen, and carbon are examples of ____________________.
|
|
|
38.
|
The
chemical symbol O stands for the element ____________________.
|
|
|
39.
|
A
substance that is made of atoms of more than one type bound together is called a
____________________.
|
|
|
40.
|
Every
chemical compound is unique and different from the ____________________ it contains.
|
|
|
41.
|
The
smallest particle of oxygen that behaves like oxygen is an oxygen ____________________.
|
|
|
42.
|
The
chemical formula for a chlorine molecule, which contains two chlorine (Cl) atoms, is
____________________.
|
|
|
43.
|
Each
molecule of iron oxide, Fe2O3, contains ____________________ atoms of
iron.
|
|
|
44.
|
Each
molecule of hydrochloric acid (HCl), contains ____________________ hydrogen atom.
|
|
|
45.
|
When
two or more pure substances are blended together, the result is a ____________________.
|
|
|
46.
|
Two
or more liquids that can dissolve into each other are referred to as
____________________.
|
|
|
47.
|
A
mixture of flour and water is called a ______________________ mixture because the substances do not
dissolve.
|
|
|
48.
|
The
kinetic theory states that the particles in matter are always in ____________________.
|
|
|
49.
|
The
kinetic theory states that, at the same ____________________, heavier particles move more slowly than
lighter particles.
|
|
|
50.
|
As
gas molecules bounce around and collide, they spread to
________________________________________.
|
|
|
51.
|
A
solid holds its shape because its structure is _____________________.
|
|
|
52.
|
As
heat is added to a solid substance, the atoms ____________________ ____________________ and move
apart.
|
|
|
53.
|
When
water ____________________, energy is released.
|
|
|
54.
|
For
any change of state to occur, ____________________ must be transferred.
|
|
|
55.
|
Ice
cubes left in the freezer for several months will become smaller because of
____________________.
|
|
|
56.
|
Energy may be converted from one form to another, but it cannot be
_____________________ ____________________.
|
|
|
57.
|
When
you burn gasoline in a car's engine, you produce energy to move the car plus energy in the form of
____________________.
|
|
|
58.
|
When
a piece of paper is burned, the amount of matter before is ____________________ the amount of matter
afterward.
|
|
|
59.
|
During a chemical or physical change, energy may be ____________________ from one form
to another.
|
|
|
60.
|
Gold
is usually found in a pure form in nature because it is ____________________.
|
|
|
61.
|
A
____________________ property describes how a substance acts when it reacts with other
substances.
|
|
|
62.
|
For
any pure substance, the boiling point and melting point will always remain
____________________.
|
|
|
63.
|
The
density of ____________________ is 1.0 g/cm3.
|
|
|
64.
|
The
____________________ of a substance is defined as its mass divided by its volume.
|
|
|
65.
|
Ice
floats in water because it is ____________________ ____________________ than water.
|
|
|
66.
|
We
inhale oxygen and exhale carbon dioxide as a result of a ____________________ change in our
bodies.
|
|
|
67.
|
A
chemical change is a change in the ____________________ of a substance.
|
|
|
68.
|
Grinding wheat into flour is an example of a ____________________
change.
|
|
|
69.
|
Copper is used to make electric wire because it is a good
____________________.
|
|
|
70.
|
Tooth
fillings are often made of gold or porcelain because these materials are
_____________________.
|
|
|
71.
|
Flammability is a chemical property that tells whether a substance reacts in the
presence of ____________________.
|