Worksheets9th grade
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
Each column in the periodic table is called a
a)
period
b)
group
c)
cluster
d)
unit
2.
The atomic number tells you what?
a)
number of electrons
b)
number of protons
c)
number of neutrons
d)
both electrons and protons in an atom.
3.
Which group of the periodic table is composed of inert (not reactive) gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
4.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
5.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
6.
What's a valence electron?
a)
electrons in the second energy level
b)
electrons in the outermost energy level
c)
the atomic number
d)
electrons in the first level
7.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
8.
The subatomic particle with a negative charge is the
a)
electron
b)
proton
c)
neutron
d)
nucleus
9.
What is the atomic mass equal to?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
10.
Each column in the periodic table is called a _________ .
a)
period
b)
group
c)
cluster
d)
unit
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