WorksheetsAtomic Structure RECAP
Total questions: 12
Worksheet time: 6mins
Name
Class
Date
1.
What scientist is best known for his "Plum Pudding" model of the atom?
a)
J.J. Tomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
2.
Rutherford's gold foil experiment provided evidence that...
a)
Negative and positive charges are spread evenly throughout the atom.
b)
Alpha particles have a positive charge.
c)
Gold is not a dense as previously thought.
d)
There is a dense positively charged nucleus at the center of an atom.
3.
How many electrons does Kr have?
a)
36
b)
84
c)
48
d)
120
4.
How many electrons does this ion of Nitrogen have?
a)
7
b)
15
c)
3
d)
10
5.
If an ion has a positive charge it is a...
a)
Proton
b)
Electron
c)
Cation
d)
Anion
6.
If an ion has a negative charge it is a...
a)
Proton
b)
Electron
c)
Cation
d)
Anion
7.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
8.
How many protons are in an atom that has an atomic number of 34, an atomic mass of 74 and a charge of -2?
a)
34
b)
74
c)
40
d)
36
9.
How many neutrons are in an atom with an atomic number of 20, an atomic mass of 45, and a charge of +2?
a)
20
b)
25
c)
2
d)
18
10.
Look at the picture!
It is a ___________ atom with a charge of ________?
It is a ___________ atom with a charge of ________?
a)
Helium, -1
b)
Helium, +1
c)
This isn't real.
d)
Not enough information.
11.
Look at the picture!
This is a ___________ atom with a charge of _______.
This is a ___________ atom with a charge of _______.
a)
Hydrogen, +1
b)
Helium, +1
c)
Helium, -1
d)
Helium, +2
12.
Look at the picture!
It is a ________ atom with a ______ charge.
It is a ________ atom with a ______ charge.
a)
Uranium, +2
b)
Helium, neutral
c)
Helium, +2
d)
Helium, -2
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