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BTA CHEM Unit 1 Atomic Structure

Total questions: 94

Worksheet time: 2hrs 43mins

Name
Class
Date
1.

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

2.

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

3.

What is the atomic number of this atom?

a)

1

b)

3

c)

4

d)

7

4.

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

5.

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

6.

What is the atomic number of this atom?

a)

1

b)

3

c)

4

d)

7

7.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

8.
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
9.
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
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.
How is the number of neutrons in the nucleus of an atom calculated?
a)
Add the number of e- and p+ together
b)
Subtract the number of e- from p+
c)
Subtract the number of p+ from the mass number
d)
Add the mass number to the number of e-
13.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
14.
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
15.
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
16.

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

a)

20

b)

10

c)

35

d)

25

17.

How many electrons does this atom have?

a)

2

b)

4

c)

6

d)

10

18.
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
a)
9
b)
10
c)
19
d)
28
19.
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
20.
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
21.
An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?
a)
15
b)
31
c)
16
d)
47
22.
What is the atomic number of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
23.

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

24.
What does the C represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
25.

What does the 6 represent?

a)

Atomic mass

b)

atomic number

c)

chemical symbol

d)

element name

26.
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
27.
Protons and Electrons balance the charge of an atom.
a)
True
b)
False
28.
Electric charges that are different _______ each other.
a)
Attract
b)
Repel
29.
Electric charges that are alike _______ each other.
a)
Attract
b)
Repel
30.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
31.
The electrons that are on the outer most region of the atom
a)
Shell Electrons
b)
Violent Electrons
c)
Valence Electrons
32.
This unit is represented by the combined number of protons and neutrons
a)
Atomic Mass
b)
Atomic Number
c)
Mass Number
33.
This number is represented by the number of protons in the atom
a)
Atomic Mass
b)
Atomic Number
c)
Mass Number
34.
The negative charge particles that float around the outside of the atom
a)
Proton
b)
Neutron
c)
Electron
35.
The area of the atom where protons and neutrons are found
a)
Electron Cloud
b)
Nucleus
c)
Energy Level
36.
A positively charged particle found in the nucleus of the atom
a)
Proton
b)
Electron
c)
Neutron
37.
The smallest possible unit matter can be divided into while still maintaining its properties.
a)
Proton
b)
Atom
c)
Element
38.
The different energy levels of electrons as they orbit the nucleus
a)
Electron Cloud
b)
Orbitals (Energy Levels)
c)
2, 8, 18, 32
39.
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
40.
What does the C represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
41.

What does the 6 represent?

a)

Atomic mass

b)

atomic number

c)

chemical symbol

d)

element name

42.
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
43.
Protons and Electrons balance the charge of an atom.
a)
True
b)
False
44.
Electric charges that are different _______ each other.
a)
Attract
b)
Repel
45.
Electric charges that are alike _______ each other.
a)
Attract
b)
Repel
46.
What charge does a proton have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
47.
What charge does an electron have?
a)
negative (-)
b)
positive (+)
c)
neutral or no charge (0)
48.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
49.

A student needs to know which element this is? What is the first thing she should be counting?

a)

A

b)

B

c)

C

d)

D

50.

What is the mass of this atom?

a)

10

b)

9

c)

6

d)

3

51.

Valence electrons determine an element's reactivity (chemical properties). How many valence electrons does this atom have?

a)

8

b)

2

c)

1

d)

11

52.

What is the atomic number of this atom?

a)

7

b)

14

c)

21

d)

9

53.

Which of the following is correct?

a)

Protons (positive);

Neutrons (negative);

Electrons (neutral)

b)

Protons (positive); Neutrons (neutral); Electrons (negative)

c)

Protons (negative);

Neutrons (neutral);

Electrons (positive)

d)

Protons (neutral);

Neutrons (positive);

Electrons (negative)

54.

An atom has 9 protons, 10 neutrons, and 9 electrons.

What is the charge on this atom?

a)

-1

b)

0

c)

+1

d)

19

e)

18

55.

An atom has 8 protons, 8 neutrons, and 10 electrons.

What is the mass of this atom?

a)

8

b)

16

c)

18

d)

-2

56.

How many neutrons does a Hydrogen atom have?

a)

1

b)

2

c)

3

d)

0

57.

How many electrons does an Iodine atom have?

a)

53

b)

126

c)

73

d)

179

58.

How many neutrons does an Oxygen atom have?

a)

8

b)

16

c)

24

d)

7.999

59.

How many electrons does a Copper atom have?

a)

63

b)

29

c)

92

d)

34

60.
How many protons are in Beryllium?
a)
4
b)
9
c)
5
d)
2
61.
How many electrons does potassium K contain? (click to see image)
a)
19
b)
39
c)
20
d)
40
62.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
63.
An atom of the element with atomic number 6 always has _____.
a)
six protons in its nucleus
b)
an atomic mass of six
c)
more than six neutrons
d)
six electron clouds
64.

How many protons does sulfur have?

a)

32

b)

16

c)

48

d)

12

65.
These will determine what element an atom is. 
a)
number of neutrons
b)
number of electrons
c)
number of atoms 
d)
number of protons 
66.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
67.

What are the three subatomic particles?

a)
Protons, Neutrons, Electrons
b)

Brotons, Negatrons, Effectrons

c)

Notrons, Flotrons, Votrons

d)

Untrons, Icetrons, Joltrons

68.

Which subatomic particle(s) will be located in the cloud?

a)

Electrons

b)

Electrons and Protons

c)

Protons and Neutrons

d)

Neutrons and Electrons

69.

How do you calculate atomic mass?

a)

Protons + Electrons

b)

Neutrons + Electrons

c)

Protons + Protons

d)

Protons + Neutrons

70.

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

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

71.

What number represents an element's identity? (How do we know what element it is?)

a)

Atomic Smell

b)

Atomic Number

c)

Atomic Mass

d)

Atomic Temperature

72.

If a proton is added or removed from an atom, what happens?

a)

It becomes a different element.

b)

It becomes a different isotope.

c)

Nothing happens.

73.

What is the difference between Neon-20 and Neon-22?

a)

They have different numbers of electrons.

b)

They have different numbers of neutrons.

c)

Only 1 is radioactive.

d)

No difference.

74.

Which atom of these isotopes has 3 protons? The symbol for lithium is Li.

a)

Lithium-6

b)

Lithium-7

c)

All of them.

d)

Lithium-9

75.

How many neutrons are in this isotope?

a)

20

b)

41

c)

61

d)

21

76.

Which is the correct symbol for Fluorine-18?

a)
b)
c)
d)
77.

How many protons are in the isotope pictured above?

a)

29

b)

34

c)

63

d)

92

78.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

79.
What element does the Bohr Model represent?
a)
Nitrogen
b)
Potassium
c)
Sodium
80.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
81.

Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.

a)

neutrons ; atomic numbers

b)

protons ; atomic numbers

c)

electrons ; mass numbers

d)

neutrons ; mass number

82.
Two isotopes of carbon are carbon-12 and carbon-14.  These isotopes differ from one another by two protons.
a)
true
b)
false
83.
Electrons in the outermost orbital.
a)
Protons
b)
Neutrons
c)
Valence Electrons
d)
Isotopes
84.
Group on the periodic table that is naturally stable and does not react with other elements.
a)
Nobel Gases
b)
Alkali Metals
c)
Alkaline Earth Metals
d)
Halogens
85.

When an electron absorbs a quantum of energy

a)

the electron gets "excited" and "jumps out" away from the nucleus

b)

the electron gets "excited" and "drops back down" closer to the nucleus

c)

the electron "calms down" and "jumps out" away from the nucleus

d)

the electron gets "calms down" and "drops back down" closer to the nucleus

86.

When an electron emits light

a)

the electron gets "excited" and "jumps out" away from the nucleus

b)

the electron gets "excited" and "drops back down" closer to the nucleus

c)

the electron "calms down" and "jumps out" away from the nucleus

d)

the electron "calms down" and "drops back down" closer to the nucleus

87.

The further an electron is away from the nucleus, the electron requires

a)

less and less energy to move even further away from the nucleus

b)

much more energy to move even further away from the nucleus

c)

the input of light to move even further away from the nucleus

d)

the nucleus to have less neutrons than protons

88.

To move an electron from energy level 1 to energy level 2

a)

requires the most amount of energy

b)

requires the least amount of energy

c)

requires no energy at all

d)

requires the aid of light

89.

Why are ions formed?

a)

To make our lives difficult

b)

Because atoms want to be stable

c)

Because atoms have the same number of protons and electrons

d)

Because atoms gained neutrons

90.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
91.

Cations are...

a)

Positive

b)

Negative

c)

Neutral

92.

Anions are...

a)

Positive

b)

Negative

c)

Neutral

93.

A neutral atom of Magnesium (shown in image) will...

a)

Lose 2 electrons when it becomes an ion

b)

Gain 2 electrons when it becomes an ion

c)

Gain 6 electrons when it becomes an ion

d)

Lose 1 electron when it becomes an ion

94.

Think fast! An element has 25 protons and 22 electrons. It has a charge of...

a)

3+

b)

3-

c)

2+

d)

1-

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