wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Atoms, Elements, Molecules, and Compounds

Total questions: 63

Worksheet time: 32mins

Name
Class
Date
1.

What do Atoms make up?

a)

Elements

b)

Molecules

c)

Atoms

d)

Compounds

2.

What do Molecules make up?

a)

Elements

b)

Molecules

c)

Atoms

d)

Compounds

3.

What makes up Elements?

a)

Elements

b)

Molecules

c)

Atoms

d)

Compounds

4.

What makes up Compounds?

a)

Elements

b)

Molecules

c)

Atoms

d)

Compounds

5.

What is the "STUFF" makes up everything in the universe?

a)

Matter

b)

Chemicals

c)

I don't know

d)

STUFF

6.

What is matter?

a)

Anything that has mass and takes up space

b)

Does Matter matter?

c)

matter

d)

the stuff

7.

What are Atoms?

a)

The building blocks of matter.

b)

toys

c)

atoms

d)

8.

Atoms are tiny _________ that make up elements.

a)

particles

b)

molecules

9.

ALL matter is composed of __________.

a)

elements

b)

atoms

c)

molecules

d)

compounds

10.

Atoms are _______ items. Put a bunch of the same ones together and you have an element!

a)

single

b)

double

c)

triple

d)

quadruple

11.

All the different kinds of matter in the universe are made from about ____ different substances called elements.

a)

100

b)

110

c)

120

d)

118

12.

Elements are organized into a chart called The _____ ______. It shows all known elements.

a)

Periodic Table

b)

table of doom

c)

period

d)

.ic table

13.

An ______ is the simplest type of a pure substance. It cannot be broken down into any other substances.

a)

element

b)

atom

c)

molecule

d)

compound

14.

Each element has its own _______ that represents the name of the element.

a)

name

b)

symbol

c)

signature

15.

What is the symbol for Oxygen?

(a)  

16.

What is the symbol for Aluminum?

(a)  

17.

What is the symbol for Mercury?

(a)  

18.

What is the symbol for Hydrogen?

(a)  

19.

What is the symbol for Sodium?

(a)  

20.

What is the symbol for Clorine?

(a)  

21.

Elements combine to form _______________.

a)

elements

b)

atoms

c)

molecules

d)

compounds

22.

A ___________ is a substance made of two or more elements chemically combined.

a)

elements

b)

atoms

c)

molecules

d)

compound

23.

Hydrogen (H) + Oxygen (O) makes H2O

What is H2O?

(a)  

24.

Elements in a compound _________ keep their original properties.

a)

do not

b)

do

25.

a)

b)

c)

d)

26.

In a compound, elements are combined in a specific _______.

a)

ratio

b)

way

27.

Each compound is represented by a ________ that shows the ratio of elements in the compound.

a)

process

b)

way

c)

formula

28.

Each compound is represented by a formula that shows the ratio of _________ in the compound.

a)

elements

b)

element

29.

Molecules ______ up compounds!

a)

make

b)

don't make

30.

Molecules are made up of _ or more connected atoms

a)

01

b)

20

c)

2p

d)

2

31.

How old are the parts that make up your body?

a)

742346424 years

b)

150000000000 years

c)

15 billion years

d)

15 years

32.

(a)   are the basic building blocks of matter.

33.

(a)   make up all objects, like desks, air and even you!

34.

(a)   are too small to see!

35.

Joke time!!!

Why can't you trust an atom?

Because they MAKE UP Everything!!!

a)

I get it

b)

hmmm...

c)

Ha hahahahaha

d)

Huh?

36.

What are Atoms made of?

a)

3 different particles

b)

2 different particles

c)

1 different particles

d)

100000000000000 different particles

37.

The particles are (a)   , or smaller than an atom.

38.

Protons: positively (_) charged in the nucleus

a)

+

b)

-

c)

none

39.

Neutrons: __ charge in the nucleus

a)

+

b)

-

c)

No

40.

Electrons: Negatively (_) charged particles in the shells.

a)

+

b)

-

c)

none

41.

Nucleus:

The ________ of the atom.

a)

middle

b)

center

c)

beginning

d)

end

42.

Nucleus:

________ protons and neutrons.

a)

Contains

b)

has

c)

eats

d)

is friends with

43.

Nucleus:

Nearly ____ of the mass is in the nucleus!

a)

all

b)

none

c)

some

d)

little

44.

Shells or Clouds:

The areas where electrons _______ the nucleus.

a)

circle

b)

surround

c)

see

45.

Shells or clouds:

There can be more than _ shell.

a)

1

b)

2

c)

3

d)

4

46.

Shells or clouds:

Electrons can move between _____.

a)

them

b)

shells

c)

clouds

47.

Opposite charges _________

a)

attract

b)

repel

48.

Same charges _________

a)

attract

b)

repel

49.

Atoms don’t like having a charge, so they try to become _________ again.

a)

neutral

b)

regular

c)

same

d)

different

50.

STRONG FORCE

The force that holds the ________ together.

a)

nucleus

b)

cell

51.

STRONG FORCE

This __________ force overpowers the protons trying to repel each other, Because they have the same charge.

a)

powerful

b)

weak

c)

strong

52.

WEAK FORCE

The force that holds the electrons in ______ around the nucleus.

a)

orbit

b)

orbeet

53.

WEAK FORCE

It is just strong enough to _______ the electrons in place.

a)

hold

b)

carry

54.

WEAK FORCE

It can be easily ________.

a)

fixed

b)

broke

c)

broken

55.

What is Mass?

a)

The amount of space in a 3D figure.

b)

The weight of matter.

56.

What is Volume?

a)

The amount of space in a 3D figure.

b)

The weight of matter.

57.

How many Hydrogen atoms?

a)

1

b)

2

c)

3

d)

4

58.

How many Oxygen atoms?

a)

1

b)

2

c)

3

d)

4

59.

What is the atomic number?

a)

92

b)

93

c)

94

d)

95

60.

What is the atomic number?

a)

75

b)

76

c)

77

d)

78

e)

79

61.

What is the atomic number?

a)

1

b)

2

c)

3

d)

4

62.

What is the atomic number?

a)

7

b)

8

c)

9

d)

10

63.

What is the symbol?

a)

O

b)

B

c)

Ar

d)

Hg