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WorksheetsAtomic Structure and The Periodic Table
Total questions: 20
Worksheet time: 13mins
Name
Class
Date
1.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
2.
Which particle does not contribute mass to the atom?
a)
Proton
b)
Neutron
c)
Electron
d)
Nucleus
3.
What element is this an atom of?
a)
nitrogen
b)
lithium
c)
beryllium
d)
carbon
4.
What is an example of an alkali metal?
a)
tin
b)
sodium
c)
krypton
d)
neon
5.
How many electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
6.
How many valence electrons does Si contain? (click to see image)
a)
14
b)
28
c)
2
d)
4
7.
What element is this?
a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
8.
Horizontal rows on the periodic table are called?
a)
Columns
b)
Periods
c)
Families
9.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
10.
An isotope is the same element with a different number of...? (4.3)
a)
Protons
b)
Neutrons
c)
Electrons
11.
How many electrons do atoms need to be stable?
a)
1
b)
2
c)
6
d)
8
12.
The period for Bromine is ___________.
a)
3
b)
2
c)
4
13.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
14.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
15.
What is a valence electron?
a)
electron found in a middle shell
b)
electron found in outermost shell
c)
electron found in innermost shell
d)
electron not found in a shell
16.
Which two particles make up the nucleus of an atom?
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Molecules and Compounds
d)
Neutrons and Electrons
17.
In an atom, what is the number of protons equal to?
a)
The number of electrons.
b)
The number of neutrons.
c)
The number of molecules.
d)
The number of nuclei.
18.
Which element has 31 protons ?
a)
Gallium
b)
Germanium
c)
Gadolinium
d)
Polonium
19.
What is the mass number?
a)
the number of protons
b)
the sum of the number of protons and the number of neutrons in the nucleus of an atom
c)
the number of electrons
d)
the number of neutrons
20.
What is the mass number of this element?
a)
5
b)
27
c)
32
d)
59
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