wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Unit 4 EC: Atomic Structure & LDD

Total questions: 107

Worksheet time: 2hrs 22mins

Name
Class
Date
1.

Label the parts of the atom with the scientist that discovered it

a)

Thomson

b)

Rutherford

c)

Bohr

d)

Dalton

1
2
3
1)
2)
3)
2.

Organize these options into the right categories.

Categorize the following

dictate what the element is

dictates the atom's charge

dictates the atom's reactivity

if it changes, the mass of the atom changes

if it changes, the element changes

equals the atomic number

equals the number of protons if it is neutral

equals the mass minus the number of protons

positive

negative

neutral

Proton
Electron
Neutron
3.

Neutrons are ​ (a)   and are located ​ (b)   .

Electrons are ​ (c)   and are located ​ (d)   .

Protons are ​ (e)   and are located in the nucleus.

Choose from the below words
heavy
light
in the nucleus
on the outer shells
4.

Neutrons are ​ (a)   .

Electrons are ​ (b)   .

Protons are ​ (c)   .

Choose from the below words
positive
negative
neutral
5.

What is the atomic mass?

A
B
C
D
6.

What is the atomic number?

A
B
C
D
7.
All matter is made of what?
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
8.

​ (a)   are all of the same ​ (b)   .

Choose from the below words
Elements
atoms
atomic number
gold
oxygen
9.

Label the parts of an atom.

a)

nucleus

b)

outer shell

c)

proton

d)

neutron

e)

electron

1
2
3
4
5
1)
2)
3)
4)
5)
10.

Bromine has ​ (a)   protons, ​ (b)   electrons, and ​ (c)   neutrons.

Choose from the below words
35
45
44
36
80
79
34
11.

Match the following

a)

1.

Mass = 19 amu

b)

2.

Mass = 11 amu

c)

3.

Mass = 12 amu

d)

4.

Mass = 18 amu

12.

Organize these options into the right categories.

Categorize the following

dictates the atom's charge

if it changes, the mass of the atom changes

if it changes, the element changes

equals the atomic number

equals the number of protons if it is neutral

equals the mass minus the number of protons

Proton
Electron
Neutron
13.

Organize these options into the right categories.

Categorize the following

positive

negative

neutral

Proton
Electron
Neutron
14.

Organize these options into the right categories.

Categorize the following

dictate what the element is

dictates the atom's charge

dictates the atom's reactivity

if it changes, the mass of the atom changes

if it changes, the element changes

equals the atomic number

equals the number of protons if it is neutral

equals the mass minus the number of protons

positive

negative

neutral

Proton
Electron
Neutron
15.

Organize these options into the right categories.

Categorize the following

dictate what the element is

dictates the atom's charge

dictates the atom's reactivity

if it changes, the mass of the atom changes

if it changes, the element changes

equals the atomic number

equals the number of protons if it is neutral

equals the mass minus the number of protons

positive

negative

neutral

Proton
Electron
Neutron
16.

Organize these options into the right categories.

Categorize the following

dictate what the element is

dictates the atom's charge

dictates the atom's reactivity

if it changes, the mass of the atom changes

if it changes, the element changes

equals the atomic number

equals the number of protons if it is neutral

equals the mass minus the number of protons

positive

negative

neutral

Proton
Electron
Neutron
17.

Neutrons are ​ (a)   and are located ​ (b)   .

Electrons are ​ (c)   and are located ​ (d)   .

Protons are ​ (e)   and are located in the nucleus.

Choose from the below words
heavy
light
in the nucleus
on the outer shells
18.

Neutrons are ​ (a)   .

Electrons are ​ (b)   .

Protons are ​ (c)   .

Choose from the below words
positive
negative
neutral
19.

What is the atomic mass?

A
B
C
D
20.

What is the atomic number?

A
B
C
D
21.

What is the atomic number?

A
B
C
D
22.

What is the atomic mass?

A
B
C
D
23.

Label each correctly

a)

atomic number

b)

atomic mass

c)

symbol

d)

name

1
2
3
1)
2)
3)
24.
All matter is made of what?
a)
energy 
b)
atoms 
c)
electrons 
d)
compounds 
25.

​ (a)   are all of the same ​ (b)   .

Choose from the below words
Elements
atoms
atomic number
gold
oxygen
26.

Label the parts of an atom.

a)

nucleus

b)

outer shell

c)

proton

d)

neutron

e)

electron

1
2
3
4
5
1)
2)
3)
4)
5)
27.

Bromine has ​ (a)   protons, ​ (b)   electrons, and ​ (c)   neutrons.

Choose from the below words
35
45
44
36
80
79
34
28.

Aluminum has ​ ​ (a)   protons, ​ (b)   electrons, and ​​ (c)   neutrons​ .

Choose from the below words
12
11
13
22
23
34
29.

Aluminum has ​ ​ (a)   protons, ​ ​ (b)   electrons, and ​ ​ (c)   neutrons​ .

Choose from the below words
20
21
40
60
30.

Aluminum has ​ (a)   protons, ​ (b)   electrons, and ​ (c)   neutrons​ .

Choose from the below words
13
14
27
40
31.

Match the following

a)

1.

Mass = 19 amu

b)

2.

Positive

Mass = 12 amu

c)

3.

Mass = 11 amu

d)

4.

Mass = 12 amu

e)

5.

Mass = 18 amu

32.

Match the following

a)

1.

Neutral Atom

b)

2.

Positive Carbon Ion

c)

3.

Negative Boron Atom

d)

4.

Negative Carbon Ion

e)

5.

Negative Atom

33.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
34.

How many valence electrons does Tin (Sn) have?

a)

8

b)

7

c)

5

d)

4

35.
Valence electrons are: 
a)
Electrons farthest away from the nucleus
b)
Electrons closest to the nucleus
c)
Electrons that just come and go - they don't stay with the atom
d)
Electrons in the second shell
36.
Which of the following has a full valence shell?
a)
Oxygen
b)
Neon
c)
Barium
d)
Carbon
37.

This is a correct dot diagram for neon (Ne)

a)

true

b)

false

38.

Which of these is correct?

a)
b)
c)
39.
What is a valence electron?
a)
an electron that is found in the outermost shell of an atom. 
b)
an electron found in the innermost shell of an atom.
c)
an electron found in the middle shell.
40.

This is a Bohr Diagram of Aluminum. How many valence electrons does Aluminum have?

a)

3

b)

4

c)

5

41.

This is a Bohr Diagram of Nitrogen. Nitrogen has

(a)   electrons.

Choose from the below words
7

2

5

42.

This is a Bohr Diagram of Nitrogen. Nitrogen has

​ (a)   valence electrons.

Choose from the below words
7

2

15
5
43.

How many valence electrons does Bromine (Br) have?

a)

5

b)

6

c)

7

d)

8

44.

How many valence electrons should Lithium have in its Lewis dot model?

a)

1

b)

2

c)

3

d)

4

45.

How many valence electrons should Oxygen have in its Lewis dot model?

a)

5

b)

6

c)

7

d)

8

46.

How many valence electrons should Magnesium have in its Lewis dot model?

a)

1

b)

2

c)

3

d)

4

47.

What is the correct lewis dot diagram for hydrogen?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

48.

What is the correct lewis dot diagram for boron?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

49.

What is the correct lewis dot diagram for tellurium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

50.

What is the correct lewis dot diagram for thalium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

51.

What is the correct lewis dot diagram for helium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

52.

What is the correct lewis dot diagram for iodine?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

53.

What is the correct lewis dot diagram for germanium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

54.

What is the correct lewis dot diagram for gallium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

55.

What is the correct lewis dot diagram for krypton?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

56.

What is the correct lewis dot diagram for potassium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

57.

What is the correct lewis dot diagram for phosphorus?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

58.

All elements want ​ (a)   valence electrons except for ​ (b)   who want ​ (c)   valence electrons.

Choose from the below words
8
Hydrogen and Helium
2
group 18
noble gasses
7
1
transition metals
59.

Choose all of the valence electron(s).

A
B
C
D
E
F
G
60.

Choose all of the valence electron(s).

A
B
C
D
61.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

62.

This is a Bohr Diagram of Nitrogen. Nitrogen has

(a)   electrons.

Choose from the below words
7

2

5

63.

This is a Bohr Diagram of Nitrogen. Nitrogen has

​ (a)   valence electrons.

Choose from the below words
7

2

15
5
64.

This is a Bohr Diagram of Aluminum. How many valence electrons does Aluminum have?

a)

3

b)

4

c)

5

65.

Choose all of the valence electron(s).

A
B
C
D
66.

Choose all of the electrons.

A
B
C
D
67.

Choose all of the valence electron(s).

A
B
C
D
E
F
G
68.

Choose all of the electrons.

A
B
C
D
E
F
G
69.

All elements want ​ (a)   valence electrons except for ​ (b)   who want ​ (c)   valence electrons.

Choose from the below words
8
Hydrogen and Helium
2
group 18
noble gasses
7
1
transition metals
70.

All elements want ​ (a)   valence electrons except for ​ (b)   who want ​ (c)   valence electrons.

Choose from the below words
8
Hydrogen and Helium
2
group 18
noble gasses
7
1
transition metals
71.

What is the correct lewis dot diagram for phosphorus?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

72.

What is the correct lewis dot diagram for potassium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

73.

What is the correct lewis dot diagram for krypton?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

74.

What is the correct lewis dot diagram for gallium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

75.

What is the correct lewis dot diagram for germanium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

76.

What is the correct lewis dot diagram for iodine?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

77.

What is the correct lewis dot diagram for helium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

78.

What is the correct lewis dot diagram for tellurium?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

79.

What is the correct lewis dot diagram for boron?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

80.

What is the correct lewis dot diagram for boron?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

e)

none of these

81.

What is the correct lewis dot diagram for hydrogen?

a)

Left

b)

Middle Left

c)

Middle Right

d)

Right

82.

Why is this an incorrect lewis dot diagrame for Helium?

a)

It is correct

b)

Wrong # of Valence Electrons

c)

Valence Electrons not placed correctly; it is a special one

d)

Symbol is incorrect

83.

Why is this an incorrect lewis dot diagram for Gallium?

a)

It is correct

b)

Wrong # of Valence Electrons

c)

Valence Electrons not placed correctly

d)

Symbol is incorrect

84.

Why is this an incorrect lewis dot diagram for Germanium?

a)

It is correct

b)

Wrong # of Valence Electrons

c)

Valence Electrons not placed correctly

d)

Symbol is incorrect

85.

Why is this an incorrect lewis dot diagram for phosphorus?

a)

It is correct

b)

Wrong # of Valence Electrons

c)

Valence Electrons not placed correctly

d)

Symbol is incorrect

86.

Why is this an incorrect lewis dot diagram for tellurium?

a)

It is correct

b)

Wrong # of Valence Electrons

c)

Valence Electrons not placed correctly

d)

Symbol is incorrect

87.

Organize these options into the right categories

Categorize the following

Ne - Neon

Cu - Copper

Cl - Chlorine

B - Boron

Li - Lithium

He - Helium

Ga - Gallium

1 Valence Electron
3 Valence Electrons
7 Valence Electrons
None of the Other Options
88.

Organize these options into the right categories

Categorize the following

Ne - Neon

Cu - Copper

P - Phosphorus

He - Helium

Xe - Xenon

Bi - Bismuth

Ca - Calcium

Fe - Iron

2 Valence Electron
5 Valence Electrons
8 Valence Electrons
None of the Other Options
89.

Which is the correct structure for ammonia (NH3)?

A
B
C
D
90.

What is correct and incorrect about the lewis dot diagram of CHCl3?

Categorize the following

Central Atom

number of valence electrons

octet rule

nothing

formal charges

Correct
Incorrect
91.

What is correct and incorrect about the lewis dot diagram of CHCl3?

Categorize the following

Central Atom

number of valence electrons

octet rule

Correct
Incorrect
92.

What is correct and incorrect about the lewis dot diagram of PO3-?

Categorize the following

Central Atom

number of valence electrons

octet rule

formal charge

Correct
Incorrect
93.

What is correct and incorrect about the lewis dot diagram of PO3-?

Categorize the following

Central Atom

number of valence electrons

octet rule

formal charge

Correct
Incorrect
94.

What is the correct lewis dot diagram of PO3-?

A
B
C
D
95.

Which of the following has all of the atoms following the octet rule for CHCl3?

A
B
C
D
96.

Which molecules have the correct formal charges assuming the electron placement is correct?

A
B
C
D
97.

Which molecules have the correct formal charges assuming the electron placement is correct?

A
B
C
D
98.

Which molecules have the correct # of valence electrons IGNORING EVERYTHING ELSE for SO2?

A
B
C
D
99.

Which molecules have all the atoms completing the octet rule IGNORING EVERYTHING ELSE for SO2?

A
B
C
D
100.

Which molecules have all the atoms completing the octet rule IGNORING EVERYTHING ELSE for SO2?

A
B
C
D
101.

Which molecules have the correct # of valence electrons IGNORING EVERYTHING ELSE for PO3?

A
B
C
D
102.

Which molecules have all the atoms following the octet rule IGNORING EVERYTHING ELSE for PO3?

A
B
C
D
103.

Which molecules have all the correct formal charges IGNORING EVERYTHING ELSE for PO3-?

A
B
C
D
104.

Which of these could be a correct lewis dot diagram?

A
B
C
D
105.

Which of these could be a correct lewis dot diagram?

A
B
C
D
106.

Which of these could be a correct lewis dot diagram?

A
B
C
D
107.

Which of these could be a correct lewis dot diagram?

A
B
C
D

Similar Resources on Wayground

Unit 1 & 2 Review

105 questions

Unit 1 & 2 Review

quiz

Worksheet

•

10th Grade - University

Chemical Names and Formulas: Ionic and Covalent Compounds

105 questions

Chemical Names and Formulas: Ionic and Covalent Compounds

quiz

Worksheet

•

10th - 11th Grade

ICP Pretest

111 questions

ICP Pretest

quiz

Worksheet

•

9th - 11th Grade

STAAR Review

108 questions

STAAR Review

quiz

Worksheet

•

KG - University

Unit 3- Bonding

102 questions

Unit 3- Bonding

quiz

Worksheet

•

9th - 12th Grade

CPA Q3 Exam Review

112 questions

CPA Q3 Exam Review

quiz

Worksheet

•

9th - 12th Grade

Matter

112 questions

Matter

quiz

Worksheet

•

10th - 11th Grade

Final Exam Quizziz Review

106 questions

Final Exam Quizziz Review

quiz

Worksheet

•

11th Grade