The Periodic Table and Periodic Law
Practice Test
1.
An element whose atoms have four valence electrons is _______.
a.
Ti
b.
Nb
c.
Cr
d.
Sn
2.
The total number of electrons in s orbitals in a germanium atom is ________.
a.
18
b.
6
c.
8
d.
15
3.
Which of the following is not a fundamental particle in an atom?
SC.A.2.4.2
a.
element
b.
proton
c.
electron
d.
neutron
4.
Which of the following is true for any atom?
SC.A.2.4.1
a.
atomic number = number of neutrons = number of electrons
b.
mass number = number of protons = number of neutrons
c.
atomic number = number of protons = number of electrons
d.
mass number = number of protons = number of electrons
5.
Which of the following is an ion?
a.
lithium-3
b.
O
2-
c.
C
d.
HCl
6.
What characteristic do atoms in the same group of elements share?
Period 1
hydrogen
1s
1
1s
1
Period 2
lithium
1s
2
2s
1
He2s
1
Period 3
sodium
1s
2
2s
2
2p
6
3s
1
Ne3s
1
Period 4
potassium
1s
2
2s
2
2p
6
3s
2
3p
6
4s
1
Ar4s
1
SC.A.2.4.5
a.
They have the same atomic mass.
b.
They have the same number of valence electrons.
c.
The have the same number of electron orbitals.
d.
They have similar physical properties.
7.
Atoms of elements in group 1A have ____________.
SC.A.2.4.5
a.
seven electrons in their outermost energy level
b.
two electrons in their outermost energy level
c.
one electron in their outermost energy level
d.
eight electrons in their outermost energy level
8.
What is the smallest particle of an element that maintains the properties of the element?
SC.A.2.4.2
a.
molecule
b.
mixture
c.
anion
d.
cation
9.
Which element has the lowest first ionization energy?
SC.A.2.4.5
a.
Na
b.
Li
c.
Cs
d.
K
10.
A technique that uses a porous barrier to separate heterogeneous mixtures is _______.
a.
crystallization
b.
chromatography
c.
filtration
d.
distillation
11.
What properties did Rutherford use in the design of the gold foil experiment?
a.
alpha particle's positive charge and electron's negative charge
b.
alpha particle's negative charge and random distribution of protons
c.
alpha particle's negative charge and gold foil's positive charge
d.
positively charged electrons distributed in a uniform negative charge
12.
Halogens are good disinfectants. Which of the following is a halogen?
SC.A.2.4.5
a.
Fe
b.
N
c.
Cl
d.
O
13.
Which group on the periodic table is known as the alkaline earth metals?
SC.A.2.4.5
a.
group 8A
b.
group 2A
c.
group 7A
d.
group 1A
14.
A heterogeneous mixture is poured through a piece of filter paper that is positioned over a beaker. What is the substance that is collected in the beaker?
a.
heterogeneous mixture
b.
solid
c.
Not enough information is given.
d.
solution
15.
Sucrose is composed of carbon, hydrogen, and oxygen. Which of the following data is not needed in order to determine the percent by mass of the three elements?
a.
mass of carbon in sucrose sample
b.
mass of hydrogen in sucrose sample
c.
atomic numbers of the elements
d.
total mass of the sucrose sample
16.
Seawater is not a substance because __________.
a.
it is salty
b.
it has hydrogen as part of its composition
c.
its composition may be different from sample to sample
d.
it is a liquid
17.
Which of the results of Rutherford's gold foil experiments was not consistent with the plum pudding atomic model?
SC.C.2.4.2
a.
The paths of alpha particles were only slightly altered by collisions with electrons.
b.
Some alpha particles were deflected straight back toward the particle source.
c.
Most of the alpha particles passed straight through the gold foil.
d.
The zinc sulfide coated screen produced a flash of light whenever it was struck by an alpha particle.
18.
Which of the following is not a state of matter?
SC.A.1.4.2
a.
gas
b.
liquid
c.
solid
d.
density
19.
Elements on the left side of the periodic table are _______.
SC.A.2.4.5
a.
nonmetals
b.
metals
c.
metalloids
d.
compounds
20.
How is the atomic mass unit
amu
defined?
a.
1/12 the mass of a carbon-12 atom
b.
1/13 the mass of a carbon-13 atom
c.
1/16 the mass of an oxygen-16 atom
d.
1/14 the mass of a nitrogen-14 atom
