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WorksheetsAtomic Structure and Periodic Table
Total questions: 38
Worksheet time: 19mins
Name
Class
Date
1.
The region around the nucleus occupied by the electrons is called the negative zone.
a)
true
b)
false
2.
For an atom to be neutral, the number of protons must equal the number of neutrons.
a)
true
b)
false
3.
The sum of the number of protons and neutrons in an atom is the mass number.
a)
true
b)
false
4.
Matter always has mass.
a)
true
b)
false
5.
The chart showing the classifications of elements according to their properties and increasing atomic numbers is called the periodic table.
a)
true
b)
false
6.
Elements on the far right side of the periodic table are classified as nonmetals.
a)
true
b)
false
7.
One proton and one electron are added to each element as you go across the periodic table.
a)
true
b)
false
8.
The atomic number of an element is determined by its number of protons.
a)
true
b)
false
9.
Two isotopes of carbon are carbon-12 and carbon-14. These isotopes differ from one another by two protons.
a)
true
b)
false
10.
The closer an electron is to the nucleus, the lower its energy.
a)
true
b)
false
11.
Every atom of the same element has the same atomic number.
a)
true
b)
false
12.
The mass of an electron is about equal to the mass of a proton.
a)
true
b)
false
13.
The symbol for chlorine is C.
a)
true
b)
false
14.
Elements arranged in vertical columns in the periodic table are called periods.
a)
true
b)
false
15.
The central core of an atom is called the hub.
a)
true
b)
false
16.
The maximum number of electrons in the second energy level of an atom is 4.
a)
true
b)
false
17.
The symbol for fluorine is Fe.
a)
true
b)
false
18.
Electron cloud models are used to show how electrons in the same energy level are bonded when elements combine to form compounds.
a)
true
b)
false
19.
According to present atomic theory, the location of an electron in an atom cannot be pinpointed exactly.
a)
true
b)
false
20.
Moving from left to right in a row of the periodic table, metallic properties increase.
a)
true
b)
false
21.
Metals are good conductors of heat and electricity.
a)
true
b)
false
22.
A very stable electron arrangement in the outer energy level is characteristic of noble gases.
a)
true
b)
false
23.
Dot diagrams are used to represent
a)
atomic numbers
b)
atomic mass
c)
isotopes
d)
outer level electrons
24.
Which of the Group 13 elements is not a metal?
a)
Boron
b)
Aluminum
c)
Gallium
d)
Indium
25.
A certain atom has 26 protons, 26 electrons, and 30 neutrons. Its mass number is
a)
26
b)
30
c)
52
d)
56
26.
In general, metals are
a)
poor conductors of heat
b)
brittle
c)
poor conductors of electricity
d)
good conductors of heat
27.
Each inner energy level of an atom has a maximum number of _____ it can hold.
a)
electrons
b)
neutrons
c)
quarks
d)
protons
28.
Atoms of the same element with different numbers of neutrons are called
a)
isotopes
b)
metals
c)
metalloids
d)
radioactive elements
29.
A particle that moves around the nucleus is a(n)
a)
electron
b)
proton
c)
neutron
d)
quark
30.
Which category of elements have the property of being malleable and ductile?
a)
gases
b)
metals
c)
metalloids
d)
nonmetals
31.
Which metalloid is in the fourth period and the same group as Carbon?
a)
Silicon
b)
Germanium
c)
Tin
d)
Boron
32.
In general, nonmetals are
a)
good conductors of electricity
b)
malleable and ductile
c)
good conductors of heat
d)
gases at room temperature
33.
Horizontal rows of the periodic table are called
a)
clusters
b)
families
c)
groups
d)
periods
34.
Elements that are gases, are brittle solids, and are poor conductors at room temperature are
a)
metals
b)
nonmetals
c)
metalloids
d)
isotopes
35.
All _____ except mercury are solids at room temperature.
a)
metalloids
b)
nonmetals
c)
metals
d)
mixtures
36.
A chemical symbol represents the _____ of an element.
a)
name
b)
reaction
c)
group
d)
structure
37.
Most of the mass of an atom is found in its
a)
nucleus
b)
electron cloud
c)
atomic number
d)
mass number
38.
Each row in the periodic table ends with a
a)
metal
b)
nonmetal
c)
metalloid
d)
noble gas
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