WorksheetsAtomic Structure 2
Total questions: 27
Worksheet time: 23mins
Name
Class
Date
1.
What is atomic number?
a)
Number of protons in an atoms
b)
Number of neutrons in an atom
c)
Mass of an atom
d)
Charge on an atom
2.
Which subatomic particles are found in the nucleus of an atom?
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons, Neutrons and Electrons
3.
What electrical charge does a proton have?
a)
+1
b)
0
c)
-1
d)
+2
4.
What mass does a neutron have?
a)
1
b)
0
c)
-1
d)
+2
5.
The total number of protons and neutrons in an atom is called the...
a)
Atomic number
b)
Proton number
c)
Mass number
d)
Weight number
6.
Complete the missing label on the diagram.
a)
Neutron
b)
Centre
c)
Nucleus
d)
Sub atomic particle
7.
Atoms of the same element must always have the same number of _________
a)
electrons
b)
neutrons
c)
isotopes
d)
protons
8.
The _________ of an element equals the number of protons in an atom of that element
a)
mass number
b)
atomic weight
c)
atomic number
d)
isotopes
9.
The __________ of an atom is the sum of the protons and neutrons in the nucleus of that atom.
a)
mass number
b)
atomic number
c)
atomic weuight
d)
isotope weight
10.
Which particle is negatively charged?
a)
proton
b)
atom
c)
neutron
d)
electron
11.
Referring to the table, what is the relative mass of a proton?
a)
10
b)
1
c)
0.1
d)
0.01
12.
Referring to the table, what is the relative mass of an electron?
a)
5
b)
1
c)
0.5
d)
0.0005
13.
Referring to the table, what is the relative charge of an electron?
a)
+1
b)
0
c)
-1
d)
-0.5
14.
Referring to the table, what is the relative charge of a neutron?
a)
+1
b)
0
c)
-1
d)
-0.5
15.
If an atom contains exactly three protons, then it's an atom of _____
a)
lithium
b)
gold
c)
nitrogen
d)
carbon
16.
The middle of the atom, which contains protons and neutrons, is called _____
a)
the shell
b)
the nucleus
c)
the cell
d)
the control center
17.
The nucleus contains _____
a)
only protons
b)
protons and neutrons
c)
protons and electrons
d)
electrons and neutrons
18.
In the Bohr model of the atom, what is the maximum number of electrons in the first shell?
a)
1
b)
2
c)
6
d)
8
19.
How many Protons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
20.
How many Neutrons are in one atom of Lithium?
a)
6.941
b)
7
c)
3
d)
4
21.
How many Electrons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
22.
Which particle contributes the negative charge to the atom?
a)
proton
b)
electron
c)
neutron
d)
nucleus
23.
Which particle does not contribute mass to the atom?
a)
Proton
b)
Neutron
c)
Electron
d)
Nucleus
24.
What element is this an atom of?
a)
nitrogen
b)
lithium
c)
beryllium
d)
carbon
25.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
26.
The mass of one proton is greater than the mass of one...
a)
neutron
b)
electron
27.
Which letter represents an electron?
a)
A
b)
B
c)
C
d)
D
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