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The Atom - JC Science

Total questions: 50

Worksheet time: 59mins

Name
Class
Date
1.
Where are electrons of an atom found?
a)
Nucleus
b)
Electron Cloud
c)
Some are in the nucleus and some in the electron cloud.
d)
They are moving everywhere.
2.
Which of the following is a positively charged subatomic particle found in the nucleus of an atom?
a)
Electron
b)
Proton
c)
Neutron
d)
Quark
3.
What carries no charge 
a)
Neutrons
b)
Electrons
c)
Protons
4.
How many Protons are in one atom of Lithium?
a)
3
b)
6
c)
7
d)
6.941
5.
Which is the smallest?
a)
electron
b)
proton
c)
atom
d)
neutron 
6.
An atom has 5 protons and 7 neutrons. What is the mass number of the atom?
a)
5
b)
7
c)
2
d)
12
7.
What is in the nucleus of an atom?
a)
Neutrons and protons 
b)
Protons
c)
Protons and Electrons
d)
Electrons and Nuetrons
8.
An atom has an atomic number of 19 and a mass number of 29. How many neutrons are in the atom?
a)
30
b)
19
c)
10
d)
38
9.
A particle that moves around the nucleus is a(n)...
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
10.
True or False? Neutrons have a negative charge
a)
True
b)
False
11.
the central region of an atom where its neutrons and protons are is its 
a)
nucleus 
b)
electron cloud
c)
core 
d)
center 
12.
all matter is made of what 
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
13.
What does the nucleus of an atom contain?
a)
Electrons and neutrons
b)
Protons and neutrons
c)
Neutrinos and positrons
d)
DNA and RN
14.
These particles orbit around the nucleus of an atom.  What are they called?
a)
electrons
b)
protons
c)
neutrons
d)
photons
15.
In the center of the atom is something called _____
a)
the kernel
b)
the cell
c)
the nucleus
d)
the focal point
16.
Of the three subatomic particles, which is the smallest and the lightest?
a)
protons 
b)
neutrons
c)
electrons
d)
They are all equal.
17.

What are Subatomic Particles?

a)

The entire atom

b)

the tiny parts inside the atom

c)

The electron cloud and space surrounding the atom

18.

Bohr discovered that electrons are located in

a)

the nucleus

b)

inside protons

c)

electron cloud

d)

circular orbits around the nucleus

19.

What is a particle with one negative charge called?

a)

electron

b)

proton

c)

quark

d)

neutron

20.
Who's atomic model was nicknamed the "planetary" model?
a)
Dalton
b)
Thomson
c)
Rutherford 
d)
Bohr
21.
Who's atomic model is shown?
a)
Dalton
b)
Thomson
c)
Rutherford
d)
Bohr
22.

Which colored particle is the electron?

a)

blue

b)

red

c)

yellow

d)

red and yellow

23.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
24.
What number indicates the nucleus?
a)
1
b)
2
c)
3
d)
4
25.
The first energy level can hold up to how many electrons?
a)
8
b)
4
c)
2
d)
5
26.
What are the 3 subatomic particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
27.
an atom with atomic number 6 would have how many protons 
a)
6
b)
12
c)
3
d)
cannot be determined 
28.
How many protons does this atom have?
a)
2.5
b)
6
c)
5
d)
10.811
29.
What is the mass number?
a)
the number of protons
b)
the sum of the number of protons and the number of neutrons in the nucleus of an atom 
c)
the number of electrons
d)
the number of neutrons
30.
What is the atomic number?
a)
number of protons
b)
number of neutrons
31.
 What is the mass number of this element?
a)
5
b)
27
c)
32
d)
59
32.

Use the picture to answer. What is the atomic mass of gold?

a)

79

b)

196.967

c)

197

d)

118

33.
Use the picture to answer the questions. How many protons are in a neutral atom of gold?
a)
79
b)
196.967
c)
197
d)
118
34.
An atom with atomic number 6 would have how many protons?
a)
6
b)
12
c)
3
d)
cannot be determined 
35.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
36.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
37.
What is the mass of an atom if it has 11 protons, 12 neutrons, and 11 electrons?
a)
22
b)
11
c)
34
d)
23
38.
What is the Atomic Mass?
a)
6.941
b)
7
c)
3
d)
6
39.

What does the number 74.922 on the picture represent?

a)

Atomic Weight

b)

Atomic Number

c)

How many electrons are in the atom

d)

How many protons are in the atom

e)

How many protons plus electrons are in the atom

40.

How many electrons does Bromine have?

a)

35

b)

79

c)

80

d)

45

41.

How many neutrons does Bromine have?

a)

35

b)

79

c)

80

d)

45

42.

Where are the electrons located in an atom?

a)

orbitals

b)

nucleus

43.

Where are the protons located in the atom?

a)

orbitals

b)

nucleus

44.

A chemical symbol represents the _________ of an element.

a)

name

b)

structure

c)

reaction

d)

type

45.

Atoms of the same element with different numbers of neutrons are called

a)

metalloids

b)

transition elements

c)

radioactive

d)

isotopes

46.

A certain atom has 26 protons, 26 electrons, and 30 neutrons. What is its mass number?

a)

26

b)

30

c)

52

d)

56

47.
In this picture, how many electrons are in the first energy level? 
a)
2
b)
4
c)
6
d)
none
48.
In a neutral atom, what needs to be true?
a)
The number of protons and neutrons are the same
b)
The number of protons and electrons are the same
c)
The number of neutrons and electrons are the same
d)
None of the above
49.
An atom has 10 protons and a mass of 18. It has __ neutrons
a)
10
b)
18
c)
28
d)
8
50.

Atoms of the same element with different numbers of neutrons are called

a)

metalloids

b)

transition elements

c)

radioactive

d)

isotopes

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