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Atomic Structure Practce Test 2024

Total questions: 35

Worksheet time: 22mins

Name
Class
Date
1.

Subatomic particles that have a negative charge

a)

electrons

b)

protons

c)

quarks

d)

neutrons

2.

The number 16 for the atomic element sulfur is the

a)

ionic number

b)

isotope

c)

atomic mass

d)

atomic number

3.

How many protons does sulfur have?

a)

32

b)

16

c)

48

d)

12

4.

How many electrons does sulfur have

a)

16

b)

32

c)

48

d)

12

5.

Subatomic particle that has a positive charge

a)

electron

b)

poitron

c)

neutron

d)

proton

6.

The center of an atom is called the ________________.

a)

electron cloud

b)

nucleus

c)

neutrion

d)

nuetron

7.

What is the atomic number of this atom?

a)

1

b)

3

c)

4

d)

7

8.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

9.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
10.
What does the C represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
11.

What does the 6 represent?

a)

Atomic mass

b)

atomic number

c)

chemical symbol

d)

element name

12.

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

a)

20

b)

10

c)

35

d)

25

13.

How many electrons does this atom have?

a)

2

b)

4

c)

6

d)

10

14.
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
15.
What is the atomic number of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
16.

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

17.

What is a subatomic particle with a positive charge that is in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

18.

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

a)

neutron

b)

proton

c)

electron

d)

electron cloud

19.

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

a)

neutron

b)

proton

c)

electron

d)

valence electron

20.

What mass does a neutron have?

a)

1 amu

b)

0 amu

c)

-1 amu

d)

+2 amu

21.

How many protons does an aluminum atom have?

a)

27

b)

14

c)

40

d)

13

22.

How many electrons does a sodium atom have?

a)

23

b)

11

c)

12

d)

34

23.
Atoms of the same element must always have the same number of _________
a)
electrons
b)
neutrons
c)
isotopes
d)
protons
24.

What element has 9 protons, 9 electrons, and 10 neutrons?

a)

nitrogen

b)

oxygen

c)

fluorine

d)

neon

25.
How many electrons does an atom with 8 protons have?
a)
8
b)
16
c)
15.99
d)
24
26.
Which of the following elements has 18 electrons?
a)
Flourine
b)
Helium
c)
Argon
d)
Chlorine
27.
Sodium has an atomic number of 11, how many protons does this atom have?
a)
22
b)
11
c)
12
d)
2
28.
How many protons are in Zirconium (Zr) ?
a)
40
b)
91
c)
30
d)
65
29.
Which element has 31 protons ?
a)
Gallium 
b)
Germanium
c)
Gadolinium
d)
Polonium
30.
Which element has 73 protons ?
a)
Titanium
b)
Tantulum
c)
Thallium
d)
Thorium
31.
Which element has 5 more protons than Oxygen (O)?
a)
Aluminum
b)
Lithium
c)
Chlorine
d)
Silicon
32.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
33.
What is the charge of the neutron?
a)
Negative
b)
Positive
c)
electrical charge
d)
Neutral (no charge)
34.
Which is a neutron?
a)
A
b)
B
c)
C
35.

How many valence electrons does carbon have?

a)

4

b)

5

c)

6

d)

7

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