Chemistry
Name:
1.
Date:
4.
Which of the following best describes an atom?
A.
protons and electrons grouped together in a
random pattern
B.
protons and electrons grouped together in an
alternating pattern
C.
a core of protons and neutrons surrounded by
electrons
Which element will gain only one electron during
a chemical reaction?
D. a core of electrons and neutrons surrounded
by protons
2.
3.
Which of the following atoms has six valence
electrons?
A.
magnesium (Mg)
B.
C.
sulfur (S)
D. argon (Ar)
Use the diagram below to answer the following
question.
5.
silicon (Si)
A.
silicon
B.
phosphorus
C.
sulfur
D. chlorine
Use the picture of an atom below to answer the
question.
Which statement best describes the density of an
atom's nucleus?
A.
The nucleus occupies most of the atom's
volume but contains little of its mass.
B.
The nucleus occupies very little of the atom's
volume and contains little of its mass.
C.
The nucleus occupies most of the atom's
volume and contains most of its mass.
Which statement best describes the part of the
atom that is shown by the arrow?
D. The nucleus occupies very little of the atom's
volume but contains most of its mass.
A.
It is an electron, and it has a negative charge.
B.
It is an electron, and it has a positive charge.
C.
It is a proton, and it has a negative charge.
D. It is a proton, and it has a positive charge.
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6.
Which of the following is the same for both
hydrogen and potassium?
A.
atomic mass
B.
total mass of neutrons
C.
number of valence electrons
9.
Use the Periodic Table of Elements to answer the
following question(s).
Which sentence about the periodic table of
elements is true?
D. number of lled energy levels
A.
All elements in period 2 are metals.
B.
All elements in group 18 are metals.
C.
Metals are found on the left side of the
periodic table.
D. Metals are found on the right side of the
periodic table.
7.
Which of the following comparisons correctly
describes subatomic particles?
A.
An electron has a negative charge and a mass
larger than the mass of a proton.
B.
A neutron has a negative charge and a mass
smaller than the mass of a proton.
C.
A neutron has a neutral charge and a mass
larger than the mass of an electron.
10.
A.
They are noble (inert) gases.
B.
They are nonmetals.
C.
They have the same thermal conductivity.
D. They have the same number of protons.
D. A proton has a positive charge and a mass
smaller than the mass of an electron.
11.
8.
What do the elements sulfur (S), nitrogen (N),
phosphorus (P), and bromine (Br) have in
common?
A diagram of the periodic table of the elements is
shown below.
Which statement correctly describes a property of
a type of matter?
A.
Air is a mixture of gases.
B.
Ice is a mixture of gases.
C.
Air is a liquid.
In which region of the table would nonmetals be
found?
D. Ice is a liquid.
A.
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B.
2
C.
3
D. 4
Chemistry
12.
13.
Which class of elements best conducts electricity?
A.
metals
B.
C.
semimetals
D. noble (inert) gases
16.
nonmetals
They increase from left to right and top to
bottom.
B.
They increase from left to right and bottom
to top.
C.
They increase from right to left and top to
bottom.
A.
Sodium (Na), because it is in the same
column.
B.
Calcium (Ca), because it is in the same row.
C.
Chlorine (Cl), because it is a nonmetal.
D. Argon (Ar), because it is a noble gas.
Generally, how do atomic masses vary throughout
the periodic table of the elements?
A.
Potassium (K), atomic number 19, will most likely
react with which of the following elements?
17.
D. They increase from right to left and bottom
to top.
Di erent elements are most likely to react in
similar ways when they
.
14.
A.
are members of the same period
Which of the following elements is classi ed as a
metal?
B.
are members of the same group
C.
have nearly the same atomic mass
A.
bromine
B.
D. have the same number of neutrons
C.
sulfur
D. lithium
helium
18.
15.
Use this element from the periodic table to answer
the question.
Which of the following is the most important
factor in determining an element's place in the
periodic table?
A.
Number of protons
B.
Number of neutrons
C.
Atomic Charge
What is the atomic mass for silicon?
D. Atomic Density
A.
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14.0
B.
14.1
C.
28.1
D. 42.1
Chemistry
19.
What is the smallest particle of the element gold
(Au) that can still be classi ed as gold?
A.
atom
B.
C.
neutron
D. proton
22.
A.
molecule
C.
23.
20.
Which of the following elements is a nonmetal?
uorine
magnesium
B.
copper
D. sodium
The gure below shows part of the periodic table.
The two beakers below contain pure water.
Which of the following is an accurate comparison
of the atomic number and mass of copper (Cu)
and gold (Au)?
21.
A.
Which of the following properties is the same for
both of these samples?
Au has a smaller atomic mass and fewer
electrons than Cu.
B.
Au has the same atomic mass as Cu but a
greater atomic number.
A.
mass
B.
C.
C.
volume
D. boiling point
Au has the same atomic number as Cu but a
much greater atomic mass.
weight
D. Au has both a greater atomic number and a
greater atomic mass than Cu.
24.
A student is given a sample of an unknown liquid
to test in the laboratory. The student thinks that
the liquid is water. Which of the following
physical properties of the sample is most helpful
to determine if the liquid is water?
A.
color of the liquid
B.
mass of the liquid
C.
volume of the liquid
25.
D. boiling point of the liquid
page 4
Based on its position on the periodic table, which
of the following elements is a nonmetal?
A.
potassium (K)
B.
vanadium (V)
C.
nickel (Ni)
D. bromine (Br)
Which of the following elements has characteristics
of some metals and also of some nonmetals?
A.
antimony (51 Sb)
B.
calcium (20 Ca)
C.
sulfur (16 S)
D. zinc (30 Zn)
Chemistry