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Worksheets

Elements, Compounds, and Mixtures

Total questions: 18

Worksheet time: 12mins

Name
Class
Date
1.

The periodic table is organized in horizontal rows called...

a)

Groups

b)

Families

c)

Periods

d)

Chemical Symbols

2.

The vertical columns of the periodic table are called...

a)

Periods

b)

Families

c)

Chemical Symbols

d)

Groups

3.

The letter, C, is a ... of carbon.

a)

Name

b)

Chemical Symbol

c)

Nickname

d)

Pseudonym

4.
Electrons move around _______________ the nucleus and have a negative charge.
a)
inside
b)
outside
c)
on top of
d)
without
5.

An element is.....

a)

...made up of lots of atoms

b)

... is more than one kind of atom

c)

...made up of one kind of atom

d)

.... made of one atom

6.

Why is water not an element?

a)

It is made of hydrogen and carbon atoms

b)

It is made of oxygen and hydrogen atoms

c)

It is made of oxygen atoms

d)

It is made of hydrogen atoms

7.
  What is a pure substance made of two or more elements that are chemically combined called?
a)
A. element
b)
B. compound     
c)
C. mixture
d)
D. solution
8.
Which of the following is not a compound?
a)
HCl
b)
Cl
c)
NaCl
d)
CO2
9.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
10.

It is a combination of two or more substances in which each substance maintains its physical property.

a)

Solution

b)

Mixture

c)

Solubility

11.
Which of these is not a mixture? 
a)
oil and water
b)
sand and soda
c)
diet soda
d)
all are mixtures
12.
Which of the following is NOT a pure substance?
a)
milk
b)
oxygen
c)
water
d)
carbon dioxide
13.
If an unknown substance CANNOT be broken down into simpler substances, it is 
a)
a compound
b)
an element
c)
a homogeneous mixture
d)
a heterogeneous mixture
14.

How are Mixtures made?

a)

Chemically

b)

Physically

c)

Physically and Chemically

d)

Found in Nature

15.

chlorine gas, Cl2, is an example of a(n)

a)

element

b)

compound

c)

mixture

16.

bronze, an alloy of many different metals, is an example of a( n)

a)

element

b)

compound

c)

mixture

17.

gold, Au, is an example of a(n)

a)

element

b)

compound

c)

mixture

18.
Is sugar (C12H22O11) an element or a compound?
a)
Element
b)
Compound