Multiple Choice
Identify the letter of the choice that
best completes the statement or answers the question.
A
B
C
D
1.
The
three particles that make up an atom are
a.
protons, neutrons, and isotopes.
b.
neutrons, isotopes, and
electrons.
c.
positive,
negatives, and electrons.
d.
protons, neutrons, and
electrons.
A
B
C
D
2.
The
space surrounding the nucleus of an atom contains
a.
protons.
b.
electrons.
c.
neutrons.
d.
ions.
A
B
C
D
3.
The
nucleus is made up of
a.
protons and electrons.
b.
electrons and neutrons.
c.
protons and neutrons.
d.
protons, neutrons, and
electrons.
A
B
C
D
4.
If
atom X had 17 protons and 18 neutrons, it would be called
A
B
C
D
5.
Isotopes are atoms of the same element with the same number of protons
and
a.
a different number of
electrons.
b.
a different
number of molecules.
c.
a different number of neutrons.
d.
the same number of neutrons.
A
B
C
D
6.
Which
of the following is NOT a function of radioactive isotopes?
a.
can determine the ages of rocks and
fossils
b.
can be used to
treat cancer and kill bacteria that cause food to spoil
c.
used as tracers to follow the movements of
substances within organisms
d.
all of the above
A
B
C
D
7.
If an
atom contains 11 protons and 12 neutrons, its atomic number is
A
B
C
D
8.
Which
of the following terms describes a substance formed by the combination of two or more elements in
definite proportions?
a.
compound
b.
isotope
c.
nucleus
d.
enzyme
A
B
C
D
9.
Which
of the following makes up a molecule of water?
a.
one atom of hydrogen and one atom of
oxygen
b.
one atom of
sodium and one atom of chlorine
c.
one atom of hydrogen and two atoms of
oxygen
d.
two atoms of
hydrogen and one atom of oxygen
A
B
C
D
10.
A
covalent bond is formed as the result of
a.
transferring electrons.
b.
sharing an electron pair.
c.
transferring protons.
d.
sharing a proton pair.
A
B
C
D
11.
What
type of ion forms when an atom loses electrons?
a.
neutral
b.
positive
c.
negative
d.
possibly positive or negative
A
B
C
D
12.
The
most abundant compound in most living things is
a.
carbon dioxide.
b.
water.
c.
sodium chloride.
d.
sugar.
A
B
C
D
13.
Water
molecules are polar, with
a.
the oxygen side being slightly positive and the hydrogen
side being slightly negative.
b.
the oxygen and hydrogen sides being slightly
positive.
c.
the oxygen and
hydrogen sides being slightly negative.
d.
the oxygen side being slightly negative and the hydrogen
side being slightly positive.
A
B
C
D
14.
Which
of the following illustrates the different types of chemical bonds in order of increasing
attraction?
a.
ionic, covalent,
hydrogen
b.
covalent, ionic,
hydrogen
c.
hydrogen,
covalent, ionic
d.
hydrogen, ionic, covalent
A
B
C
D
15.
A
solution is a(an)
a.
breaking of a
chemical bond.
b.
chemical
reaction.
c.
evenly-distributed mixture of two or more substances.
d.
combination of two or more
liquids.
A
B
C
D
16.
If you
stir salt into boiling water, you produce a
a.
mixture called a suspension.
b.
mixture called a solution.
c.
solution and suspension.
d.
mixture only.
A
B
C
D
17.
When
salt is dissolved in water, water is the
a.
reactant.
b.
solution.
c.
solute.
d.
solvent.
A
B
C
D
18.
Suspensions are mixtures
a.
of water and undissolved
material.
b.
in which the
components are evenly distributed throughout the solution.
c.
both a and b.
d.
neither a nor b.
A
B
C
D
19.
If the
pH of stomach acid and of oven cleaner were measured,
a.
both would be below 7.
b.
both would be above 7.
c.
the pH of stomach acid would be above 7, but the pH of
oven cleaner would be below 7.
d.
the pH of stomach acid would be below 7, but the pH of
oven cleaner would be above 7.
A
B
C
D
20.
A map
of eastern North America, showing the pH of rainfall in the various states, indicates that the pH of
rain in New York State varies from 4.22 to 4.40. According to these figures, the most acidic rainfall
in New York State has a pH of
a.
4.22.
b.
4.30.
c.
4.35.
d.
4.40.
A
B
C
D
21.
A
substance with a pH of 6 is called
a.
an acid.
b.
a base.
c.
both an acid and a base.
d.
neither an acid nor a base.
A
B
C
D
22.
Solutions that contain concentrations of H+ ions lower than pure
water
a.
have pH values below
7.
b.
are
acids.
c.
are
bases.
d.
are
enzymes.
A
B
C
D
23.
Amino
acid is to protein as
a.
fat is to lipid.
b.
DNA is to RNA.
c.
sugar is to fat.
d.
simple sugar is to starch.
A
B
C
D
24.
A
monosaccharide is a
a.
carbohydrate.
b.
lipid.
c.
nucleic acid.
d.
protein.
A
B
C
D
25.
Which
of the following organic compounds is the main source of energy for living things?
a.
carbohydrates
b.
lipids
c.
nucleic acids
d.
proteins
A
B
C
D
26.
Which
of the following is NOT a function of proteins?
a.
store and transmit heredity
b.
help to fight disease
c.
control the rate of reactions and regulate cell
processes
d.
build tissues
such as bone and muscle
A
B
C
D
27.
Which
statement is true?
a.
Simple sugars are made of
polysaccharides.
b.
Glycerol is made of fatty acids.
c.
RNA molecules are made of
nucleotides.
d.
Amino acids are
made of proteins.
A
B
C
D
28.
In
chemical reactions, atoms are
a.
created.
b.
destroyed.
c.
rearranged.
d.
neutralized.
A
B
C
D
29.
When
hydrogen and oxygen combine to form water, water would be
a.
a product.
b.
a reactant.
c.
both a product and a reactant.
d.
neither a product nor a
reactant.
A
B
C
D
30.
Identify the reactant(s) in the chemical reaction, CO2 + H2 O
® H2 CO3 .
a.
CO2 , H2 O, and
H2 CO3
b.
CO2 and
H2 O
c.
H2 CO3
d.
CO2
A
B
C
D
31.
What
is the process that changes one set of chemicals into another set of chemicals?
a.
cohesion
b.
adhesion
c.
chemical reaction
d.
dissolving
A
B
C
D
32.
What
is the term used to describe the energy needed to get a reaction started?
a.
adhesion energy
b.
activation energy
c.
cohesion energy
d.
chemical energy
A
B
C
D
33.
Chemical reactions that release energy
a.
will not occur.
b.
will sometimes occur.
c.
will always explode.
d.
often occur spontaneously.
A
B
C
D
34.
If a
reaction in one direction releases energy, the reaction in the opposite direction
a.
also releases energy.
b.
absorbs energy.
c.
destroys energy.
d.
cannot occur.
A
B
C
D
35.
Which
of the following is a form of energy released during a chemical reaction?
a.
heat
b.
sound
c.
light
d.
all of the above
A
B
C
D
36.
Which
of the following statements about enzymes is NOT true?
a.
Enzymes work best at a specified
pH.
b.
All enzymes work
inside cells.
c.
Enzymes are
proteins.
d.
Enzymes are
organic catalysts.
A
B
C
D
37.
Which
of the following statements is true about catalysts?
a.
Catalysts slow down the rate of chemical
reactions.
b.
All catalysts are
enzymes.
c.
Catalysts are
used up during a chemical reaction.
d.
Catalysts lower the activation energy of a chemical
reaction.
A
B
C
D
38.
A
substance that accelerates the rate of a chemical reaction is called a(an)
a.
catalyst.
b.
lipid.
c.
molecule.
d.
element.
A
B
C
D
39.
Enzymes affect the reactions in living cells by changing the
a.
products of the reaction.
b.
speed of the reaction.
c.
temperature of the reaction.
d.
pH of the reaction.
A
B
C
D
40.
When
using litmus paper, blue litmus paper will __________ in the presence of an acid.
a.
turn red
c.
stay blue
b.
turn clear
d.
turn green
A
B
C
D
41.
Red
litmus paper is used to detect a __________.
a.
acid
c.
neutral solution
b.
base
d.
acid or a base
A
B
C
D
42.
_______________ explains why the water tended to "pile-up" on the penny
during the "Properties of Water" Lab.
a.
Adhesion
c.
cohesion
b.
ionic bonding
d.
covalent bonding
Matching: Use the attached periodic table to answer the following 8
questions. You may use choices more than once if neccessary.
a.
17
e.
15
b.
10
f.
Cu
c.
0
g.
16
d.
82
h.
20
A
B
C
D
E
F
G
H
43.
What
is the atomic symbol for Copper?
A
B
C
D
E
F
G
H
44.
What
is the Atomic number for Sulfur?
A
B
C
D
E
F
G
H
45.
What
is the Atomic number for Lead?
A
B
C
D
E
F
G
H
46.
How
many electrons does Chlorine have?
A
B
C
D
E
F
G
H
47.
How
many protons does Sulfur have?
A
B
C
D
E
F
G
H
48.
How
many neutrons does Calcium have?
A
B
C
D
E
F
G
H
49.
How
many neurtrons does Hydrogen have?
A
B
C
D
E
F
G
H
50.
What
is the atomic weight of Oxygen rounded off to the nearest whole number?