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elements, atoms, molecules and compounds

Total questions: 44

Worksheet time: 24mins

Name
Class
Date
1.

What is the picture displayed?

a)

atom

b)

element

c)

compound

2.
What is the picture displayed?
a)
atom
b)
element
c)
molecule
d)
compound
3.

What is the picture displayed?

a)

compound

b)

element

c)

molecule

4.

How many elements are in C6H12O6?

a)

1

b)

2

c)

3

d)

6

5.
What do we call a chemical substance made up of 2 or more different types atoms bonded together?
a)
formula
b)
atom
c)
subscript
d)
compound
6.

Humans absorb oxygen from the air they breathe in and exhale carbon dioxide gas, CO2. Carbon dioxide gas is

a)

an element made of carbon and oxygen atoms.

b)

a solution made of carbon and oxygen atoms.

c)

a compound of carbon and oxygen atoms.

d)

a mixture of carbon and oxygen atoms.

7.
What is a compound?
a)
an atom with more electrons than protons
b)
a substance in which the atoms of two or more elements are combined together
c)
an atom with more neutrons than protons
d)
a substance in which the atoms of three or more elements are combined together
8.
The chemical combination of two or more different kinds of atoms in fixed amounts is called a(n)
a)
orbit
b)
compound
c)
mixture
d)
element
9.
Atoms combine to form _______. 
a)
electrons
b)
molecules
c)
nuclei
d)
neutrons
10.

This is the smallest unit of an element.

a)

atom

b)

molecule

c)

compound

d)

nucleus

11.

Any combination of two or more atoms that are chemically combined is called this.

a)

molecule

b)

compound

c)

element

d)

pure substance

12.

This is any combination of two or more atoms from different elements that are chemically combined.

a)

compound

b)

molecule

c)

element

d)

pure substance

13.

The basic building blocks of the universe. The smallest and most pure substances that can be found.

a)

elements

b)

atoms

c)

molecules

d)

compounds

14.

This is a list of the 118 known elements that exist (and a picture of it is on this quiz!).

a)

The Periodic Table of Elements

b)

The Student Faculty Handbook

c)

Facebook

d)

Wikipedia

15.

What is a molecule?

a)

two elements bonded together (sharing electrons)

b)

a mixture of different substances

c)

smallest individual particles

d)

salt mixed in water

16.

What is a compound?

a)

Two different elements bonded together.

b)

Two of the same elements bonded together.

c)

A mixture of different substances.

d)

Two substances stuck together with glue.

17.

Which of the following is a chemical formula?

a)

H2SO4

b)

Si

c)

Hg

d)

C

18.

Which of the following is a chemical symbol?

a)

H2O

b)

O

c)

NaCl

d)

FeO

19.

What is water (H2O)?

a)

element

b)

compound

c)

mixture

20.
Which one can be found on the periodic table?
a)
Compound 
b)
Element
21.
What is the term for combining 2 or more DIFFERENT atoms together?
a)
atoms
b)
elements
c)
molecules
d)
compounds
22.

Elements are made of

a)

Many types of atoms

b)

the Periodic Table

c)

One type of atom

d)

Molecules

23.

Molecules are

a)

2 atoms joined together

b)

2 elements joined together

c)

2 or more atoms mixed together

d)

2 or more atoms (same or different) joined together

24.

The smallest particle that makes everything

a)

atom

b)

element

c)

compound

d)

mixture

25.
TRUE OR FALSE:
Every compound is a molecule but not every molecule is a compound.
a)
TRUE
b)
FALSE
26.
Are these molecules also compounds?
a)
YES
b)
NO
27.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
28.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
29.
What is the tiniest particle in the entire universe?
a)
cells
b)
gases
c)
atoms
d)
liquids
30.
What is the name of a single type of atom?
a)
cell
b)
proton
c)
element
d)
atom
31.
What is this?
a)
Compound
b)
Element
c)
Mixture of elements
d)
Mixture of compounds
32.
What is this?
a)
Compound
b)
Element
c)
Mixture of elements
d)
Mixture of compounds
33.
What are these?
a)
Molecules
b)
Compounds
34.
What are these?
a)
Compounds
b)
Elements
35.
What is the tiniest particle in the entire universe?
a)
cells
b)
gases
c)
atoms
d)
liquids
36.

Classify the picture with the correct label.

a)

Element

b)

Compound

c)

Mixture of Elements

37.
N2..This is an example of what?
a)
molecule
b)
element
c)
compound
38.

This is an example of what?

a)

element

b)

molecule

c)

compound and molecule

39.

This picture represents...

a)

An element and a molecule

b)

compound

c)

element only

40.

A substance with two or more different types of atoms bonded together is called...

a)

An element

b)

An atom

c)

A compound

41.

look at the pic

a)

They are examples of a molecule and compound

b)

They are examples of molecules only

c)

They are examples of compounds only

42.

Which of the following particle diagrams show molecules of a mixture of elements?

a)

A

b)

B

c)

C

d)

D

43.

The particle diagram above shows:

a)

an element.

b)

a compound.

c)

a mixture of elements.

d)

a mixture of compounds.

44.

Which of the following shows the particles in a mixture of compounds?

a)

A

b)

B

c)

C

d)

D

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