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Worksheets

Elements, Compounds and Mixtures

Total questions: 25

Worksheet time: 13mins

Name
Class
Date
1.

This picture represents which of the following?

a)

Element

b)

Compound

c)

Mixture

2.

This picture represents which of the following?

a)

Element

b)

Compound

c)

Mixture

3.

This picture represents which of the following?

a)

Element

b)

Compound

c)

Mixture

4.

Which of the following can be found on the periodic table?

a)

Compound

b)

Element

c)

Mixture

5.

Which of the following represents an element?

a)

H2O

b)

H2

c)

NaCl

d)

CaCO3

6.

The chemical symbol for Silicon is

a)

S

b)

Sn

c)

Sc

d)

Si

7.
The chemical symbol for Carbon is
a)
C
b)
Cb
c)
Ca
d)
Cn
8.

Elements are represented by chemical symbol. Symbols are written with

a)

All lower case letters

b)

All capital letters

c)

Always only one letter

d)

At least and ONLY one capital letter

9.

What is the symbol for Chlorine?

a)

Ce

b)

Cl

c)

Ch

d)

C

10.
A mixtures is a combination of two or more____________ in which no new kinds of matter are formed.
a)
 subtances
b)
parts
c)
leaves
d)
pebbles
11.
The atoms in a molecule are held together by
a)
gravitational attraction
b)
chemical bonds
c)
frictional forces
d)
physical bonds
12.
The difference between elements and compounds is that...
a)
elements can be separated by physical means and compounds cannot.
b)
elements cannot be separated by physical means and compounds can.
c)
elements contain only one kind of atom and compounds contain more than one kind of atom.
d)
elements contain more than one kind of atom and compounds contain only one kind of atom.
13.

These contain only one kind of atom.

a)

Element

b)

Compound

c)

Mixture

d)

Water

14.

Elements can be broken down into simpler substances.

a)

False

b)

True

15.

A compound is made of ________ atoms.

a)

big

b)

similar

c)

different

16.
Salt is a _________. 
a)
compound 
b)
element 
c)
mixture 
17.

A combination of substances that are not chemically combined is called a ______________.

a)

mixture

b)

compound

c)

element

18.

Compounds are chemically bonded together.

a)

False

b)

True

19.

When materials combine to form a mixture, they keep their original properties.

a)

True

b)

False

20.
Water is an example of:
a)
compound
b)
element
c)
solution
21.
What is made up two or more elements that are chemically combined?
a)
Element
b)
Mixture
c)
Compound
d)
Solids
22.

How many elements are represented in the compound

Na2CO3?

a)

1

b)

2

c)

3

d)

4

23.
Mixtures are separated through ___________changes.
a)
mixture
b)
compound
c)
physical
24.

What is H2SO4 made up of?

a)

2 Hydrogen, 1 Sulfur, 4 Oxygen

b)

1 Hydrogen, 2 Sulfur, 4 Oxygen

c)

2 Hydrogen and 4 Sodium

d)

1 Hydrogen and 6 Sodium

25.

The blue numbers in the image below are called ___________.

a)

compounds

b)

coefficients

c)

subscripts

d)

chemical formulas

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