wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Atomic Structure

Total questions: 71

Worksheet time: 47mins

Name
Class
Date
1.

Who first named the atom?

a)

Democritus

b)

Mendeleev

c)

John Dalton

d)

Aristotle

2.

First person to work on the periodic table

a)

Aristotle

b)

John Dalton

c)

Mendeleev

d)

Democritus

3.

Came up with the model that says electrons travel in fixed orbits around the nucleus

a)

Thomson

b)

Bohr

c)

Dalton

d)

Mendeleev

4.

What experiment did Rutherford use to develop his Nuclear Model?

a)

Plum Pudding Experiment

b)

Chocolate Chip Cookie Experiment

c)

Gold Foil Experiment

d)

Periodic Table Experiment

5.

Explain JJ Thomson’s Plum Pudding Model.

a)

The atom has a nucleus with electron cloud around it.

b)

Atom is a solid sphere that can’t get any smaller

c)

Electrons are negative particles that travel in fixed orbits

d)

The atom is positively charged with negative particles embedded throughout

6.

Subatomic particle that has a positive charge

a)

Protons

b)

Nuetrons

c)

Electrons

d)

Quarks

7.

The charge of a neutron

a)

positive

b)

neutral

c)

negative

8.

The particles that make up protons and neutrons

a)

electron cloud

b)

magnets

c)

quarks

9.

How many electrons can be held in the first energy level?

a)

1

b)

2

c)

8

d)

10

10.

The mass of an atom is in the _____where the ____ are. 

The volume of the atom is in the _____where the _____ are.

a)

nucleus, p & n; electron cloud, e

b)

electron cloud, e; nucleus, p & n

c)

nucleus, p & e; electron cloud, e

11.

This group will never combine with any other element naturally.

a)

alkali earth metals

b)

noble gases

c)

hydrogen

d)

halogens

12.

The most reactive metals.

a)

halogens

b)

transition metals

c)

alkali metals

d)

noble gases

13.

The most reactive nonmetals.

a)

halogens

b)

transition metals

c)

alkali metals

d)

noble gases

14.

All elements in this group have 2 valence electrons.

a)

alkali metals

b)

alkaline earth metals

c)

halogens

d)

noble gases

15.

This element is the only one in its group that belongs with the group # (due to having the same # of valence e-) but not with the group name (because it is a different classification)

a)

Oxygen

b)

Helium

c)

Hydrogen

d)

Carbon

16.

The period number tells you…

a)

number of energy levels

b)

number of valence electrons

c)

number of protons

17.

The semi-conductors on the periodic table are classified as…

a)

metals

b)

metalloids

c)

nonmetals

18.

Which number can be used to determine the identity of an element?

a)

atomic number

b)

atomic mass

19.

Hydrogen’s most common isotope has _____ proton(s) and ____ neutron(s).

a)

0, 0

b)

0, 1

c)

1, 0

d)

1, 1

20.

This element has 4 energy levels and is one of the rare earth metals.

a)

Silicon

b)

Yttrium

c)

Scandium

d)

Calcium

21.

The number of protons and neutrons is represented by the…

a)

atomic number

b)

mass number

22.

Isotopes are atoms of the same element with different numbers of

a)

protons

b)

neutrons

c)

electrons

d)

quarks

23.

What noble gas does not have 8 valence electrons?

a)

Hydrogen

b)

Helium

c)

Neon

d)

Argon

24.

Select the two isotope notations for the most common form of Sodium.

a)

11Na

b)

Sodium-11

c)

23Na

d)

Sodium-23

25.

A horizontal row of elements in the periodic table

a)

Molecule

b)

Period

c)

Family

d)

Atom

26.

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

27.

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

28.

What is the atomic number of this atom?

a)

1

b)

3

c)

4

d)

7

29.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

30.
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
31.
What does the C represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
32.

What does the 6 represent?

a)

Atomic mass

b)

atomic number

c)

chemical symbol

d)

element name

33.
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-
34.
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 
35.
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
36.

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

a)

20

b)

10

c)

35

d)

25

37.

How many electrons does this atom have?

a)

2

b)

4

c)

6

d)

10

38.
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
a)
9
b)
10
c)
19
d)
28
39.
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
40.
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
41.
What is the atomic number of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
42.

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

43.

Look at this picture of Argon off the periodic table. Which of the following is true for this element?

a)

18 protons

b)

40 protons

c)

22 protons

d)

21.9 protons

44.

When you two atoms with different masses, Carbon-12 and Carbon-13 for example, what type of atom do you have?

a)

Neutral atom

b)

Ion

c)

Isotope

45.

When you two isotopes of an atom, Carbon-12 and Carbon-13 for example, what has changed in the atomic structure?

a)

Number of protons

b)

Number of neutrons

c)

Number of electrons

46.

Which of the following is correct?

a)

Protons are positive, electrons are negative, neutrons are neutral.

b)

Protons are neutral, electrons are negative, neutrons are positive

c)

Protons are negative, electrons are positive, neutrons are neutral

d)

Protons are positive, electrons are neutral, neutrons are negative

47.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

48.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
49.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
50.

What is the atomic mass of Neon?

a)

10

b)

20

c)

30

51.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

52.
What number indicates the nucleus?
a)
1
b)
2
c)
3
d)
4
53.
What number indicates an electron?
a)
1
b)
2
c)
3
d)
4
54.

At what part of the atom is the arrow pointing?

a)

nucleus

b)

energy level

c)

electron

d)

proton

55.
Each column in the periodic table is called a _________ .
a)
period
b)
group
c)
cluster
d)
unit
56.
Groups on the periodic table are __________.
a)
Horizontal Rows
b)
Vertical Columns
57.
Periods on the periodic table are __________.
a)
Horizontal Rows
b)
Vertical Columns
58.

How many periods are on the periodic table?

a)

5

b)

6

c)

7

d)

8

59.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
60.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
61.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
62.
A horizontal row of elements in the periodic table.
a)
column
b)
group
c)
period
63.

Which color on the image of the periodic table corresponds with the halogens.

a)

red

b)

black

c)

blue

d)

orange

64.

Which color on the image of the periodic table corresponds with the noble gases.

a)

red

b)

black

c)

blue

d)

orange

65.

Which color on the image of the periodic table corresponds with the transition metals.

a)

red

b)

black

c)

blue

d)

orange

66.
Sodium (Na) is found in group 
a)
1
b)
2
c)
3
d)
4
67.

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

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

68.

12 protons and 13 neutrons

a)

Mg-12

b)

Mg-13

c)

Mg-25

d)

Mg-24.305

69.

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.

70.

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.

71.

Which is the correct symbol for Fluorine-18?

a)
b)
c)
d)

Similar Resources on Wayground

Viajar

71 questions

Viajar

quiz

Worksheet

•

9th Grade

History & Trends in Healthcare Textbook Review

69 questions

History & Trends in Healthcare Textbook Review

quiz

Worksheet

•

10th Grade

FET_Final_Study_Guide

75 questions

FET_Final_Study_Guide

quiz

Worksheet

•

9th Grade

Hayek Triangles

67 questions

Hayek Triangles

quiz

Worksheet

•

9th - 12th Grade

Principles of Health Science Final Review

74 questions

Principles of Health Science Final Review

quiz

Worksheet

•

9th Grade

PRACTICAL RESEARCH 1 REVIEWER

66 questions

PRACTICAL RESEARCH 1 REVIEWER

quiz

Worksheet

•

11th Grade

Digital Marketing Pretest

66 questions

Digital Marketing Pretest

quiz

Worksheet

•

10th - 12th Grade

O.H. Final Review

66 questions

O.H. Final Review

quiz

Worksheet

•

10th - 12th Grade