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Atomic Structure Review

Total questions: 35

Worksheet time: 53mins

Name
Class
Date
1.

Which part of the diagram represents the proton?

¿Qué parte del diagrama representa el protón?

a)

a

b)

b

c)

c

d)

d

2.
What is the atomic mass of Boron?
a)
5
b)
11
c)
6
3.
How many electrons does Sodium have?
a)
11
b)
23
c)
12
4.
How many neutrons does Fluorine have?
a)
9
b)
19
c)
10
5.

Subatomic particles that have a negative charge

a)

electrons

b)

protons

c)

quarks

d)

neutrons

6.
Which particles are located in the nucleus? 
a)
Protons & Electrons 
b)
Electrons & Neutrons 
c)
Protons & Neutrons 
7.
Which sub-atomic particles were determined to have charges? 
a)
Protons & Electrons 
b)
Electrons & Neutrons
c)
Protons & Neutrons
8.

An atom has 25 protons and 30 neutrons. How many electrons are needed to make the atom neutral?

a)

0

b)

25

c)

30

d)

35

9.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
10.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

11.

How many neutrons does Chlorine have?

a)

18

b)

17

c)

35

d)

52

12.
The subatomic particles in green are...
a)
Protons
b)
Neutrons
c)
Electrons
13.
The subatomic particles in red are
a)
Electrons
b)
Neutrons
c)
Protons
14.

What is the atomic number?

a)

the number of protons in the nucleus

b)

the number of protons and neutrons in the nucleus

c)

the number of neutrons in the nucleus

d)

the number of protons in the energy levels

15.

What is the mass number?

a)

the number of protons in the nucleus

b)

the number of protons and neutrons in the nucleus

c)

the number of neutrons in the nucleus

d)

the number of protons and electrons in the atom

16.

What is the atomic number of this atom?

a)

1

b)

3

c)

4

d)

7

17.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

18.
In order for an atom to be neutral what has to be true?
a)
The atom has more protons than neutrons
b)
The atom has more neutrons than protons
c)
The atom has the same number of protons and neutrons
d)
The atom has the same number of protons and electrons
19.
Which subatomic particles contribute the most to the mass of an atom?
a)
Protons, Neutrons, Electrons
b)
Protons only
c)
Protons and Electrons
d)
Protons and Neutrons
20.
If an atom has 12 positively charged subatomic particles, which of the following must it also have to be considered a neutral atom?
a)
12 neutrons
b)
12 electrons
c)
12 protons
d)
24 protons and neutrons
21.
Where is most of the mass in an atom located?
a)
in the nucleus
b)
in the protons
c)
in the neutrons
d)
in the electrons
22.

Which of the following determines the identity of an element?

a)

number of protons

b)

atomic mass

c)

number of neutrons

d)

number of shells

23.

Most of an atom is made up of...

a)

energy

b)

protons

c)

empty space

d)

neutrons

24.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

25.

Rubidium has two common isotopes, 85Rb and 87Rb. If the abundance of 85Rb is 72.2% and the abundance of 87Rb is 27.8%, what is the average atomic mass of rubidium?

a)

85.468 amu

b)

37 amu

c)

85.6 amu

d)

86.4 amu

26.

There are two primary isotopes found in any sample of copper: copper-63 and copper-65. The isotope 65Cu composes 69.2% of the sample and 63Cu comprises the other 30.8%. Based on this data, what is the atomic mass of copper?

a)

29 amu

b)

63.546 amu

c)

64.4 amu

d)

63.6 amu

27.

Using the picture, you can determine that Carbon-13 has ____ neutrons.

a)

13

b)

6

c)

12

d)

7

28.

Carbon-14 has ____ protons, ____ electrons, and _____ neutrons.

a)

6, 6, 8

b)

6, 6, 6

c)

6, 6, 14

d)

6, 10, 14

29.
What is the name of the pictured isotope?
a)
Carbon-12
b)
Carbon-13
c)
Carbon-14
d)
Carbon-15
30.

A Bromine ion gains 1 electron, which of the following is the correct symbol for a Bromine ion?

a)

Br-1

b)

Br+1

c)

Br+7

d)

Br-7

31.

An atom with 2 protons, 3 neutrons, and 4 electrons has a charge of ____.

a)

+2

b)

-2

c)

+3

d)

0

32.

How many electrons does this isotope of beryllium have?

a)

9

b)

5

c)

4

d)

2

33.

How many neutrons does this isotope of beryllium have?

a)

9

b)

5

c)

4

d)

2

34.

What is the name of the isotope pictured in the notation above?

a)

Chlorine Ion

b)

Chlorine-17

c)

Chlorine-35

d)

Chlorine-18

35.

What number should be written under the 33 in this isotope notation for sulfur?

a)

-1

b)

17

c)

16

d)

32

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