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Atomic Structure Review

Total questions: 35

Worksheet time: 39mins

Name
Class
Date
1.
Oxygen has 8 protons. What is oxygen's atomic number?
a)
16
b)
8
c)
15.999
d)
0
2.
A neutral atom of Carbon-13 has ________ electrons and _________ neutrons
a)
13, 13
b)
6, 7
c)
7, 7
d)
6, 6
3.
The nucleus is ____________ charged whereas the electron cloud is ____________ charged. 
a)
negatively, positively
b)
negatively, negatively
c)
positively, positively
d)
positively, negatively
4.
An element has two naturally occurring isotopes. One is 10.013 amu and is 19.9% abundant. The other is 11.01 amu and is 80.1% abundant. What is the average atomic mass? What element is it?
a)
9.012, Beryllium
b)
12.011, Carbon
c)
6.941, Lithium
d)
10.812, Boron
5.
24.1% of all the isotopes of a an element have a mass of 75.23 amu, 48.7% have a mass of 74.61 amu, and 27.2% have a mass of 75.20 amu.
What is the average mass of this element?
a)
74.92 amu
b)
24.97 amu
c)
75.01 amu
d)
74.51 amu
6.
Calculate the average atomic mass of silver.
a)
106.38649amu
b)
111.91896amu
c)
107.8677amu
d)
121
7.
An isotope has three forms.  30% have a mass of 4 amu, 20% have a mass of 5 amu and 50% have a mass of 3 amu.  Average atomic mass will be closest to
a)
2 amu
b)
3 amu
c)
4 amu
d)
5 amu
8.

Identify #4

a)

proton

b)

neutron

c)

electron

d)

nucleus

9.

Identify #3

a)

proton

b)

neutron

c)

electron

d)

nucleus

10.

Identify #2

a)

proton

b)

neutron

c)

electron

d)

nucleus

11.

Identify #1

a)

proton

b)

neutron

c)

electron

d)

nucleus

12.

How many neutrons does platinum have?

a)

78

b)

117

c)

195

d)

196

13.

What is the atomic mass of barium

a)

56

b)

82

c)

137

d)

138

14.

How many protons does indium have?

a)

49

b)

66

c)

114

d)

115

15.

Name the element

a)

Aluminum

b)

Silicon

c)

Phosphorus

d)

Sulfur

16.

Name the element

a)

Boron

b)

Carbon

c)

Nitrogen

d)

Oxygen

17.

The smallest subatomic particle is the

a)

proton

b)

neutron

c)

electron

d)

decepticon

18.

The periodic table is in order by the

a)

Mass number

b)

Neutron number

c)

Atomic number

d)

APE MAN Number

19.

The atomic number will always be the same as

a)

Mass number and number of protons

b)

Number of neutrons and protons

c)

number of electrons and protons

d)

Number of electrons and neutrons

20.

Found in the nucleus of an atom. This particle has a positive charge.

a)

Neutron

b)

Proton

c)

Electron

d)

Decepticon

21.

Found orbiting outside the nucleus, this subatomic particle has a negative charge.

a)

Neutron

b)

Proton

c)

Electron

d)

Idontknowatron

22.

Found in the nucleus of an atom, this subatomic particle has a neutral (or no ) charge

a)

Neutron

b)

Proton

c)

Electron

d)

Whattheheckatron

23.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
24.
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
a)
20
b)
10
c)
5
d)
25
25.
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
a)
11
b)
5
c)
6
d)
16
26.
Which letter represents a proton?
a)
A
b)
B
c)
C
d)
D
27.
Which letter represents an electron?
a)
A
b)
B
c)
C
d)
D
28.
Which letter represents an electron?
a)
A
b)
B
c)
C
d)
D
29.
Which letter represents a neutron?
a)
A
b)
B
c)
C
d)
D
30.
Which letter represents the nucleus?
a)
A
b)
B
c)
D
d)
E
31.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
32.
Which is the electron configuration for an oxygen atom?
a)
1s22s22p63s23p64s2
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p6
33.
The electron configuration of an atom is 1s22s22p6.  The number of electrons in the atom is 
a)
3
b)
6
c)
8
d)
10
34.
What do you start electron configuration with?
a)
1s2
b)
1d10
c)
1f14
d)
1p6
35.
What is this element?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium

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