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Worksheets

Element Compound Mixture

Total questions: 59

Worksheet time: 29mins

Name
Class
Date
1.

An _______________ cannot be broken down into any other substance.

a)

element

b)

Compound

c)

Mixture

d)

Molecule

2.

1. The symbol for an element can found on the _______________ _____________.

a)

table of elements

b)

elements table

c)

periodic table

d)

problem table

3.

Fe is the __________ for iron.

a)

element

b)

symbol

c)

formula

d)

sign

4.

A ____________ is formed when one or more elements are chemically bonded.

a)

element

b)

compound

c)

mixture

d)

molecule

5.

A formula is used to represent a ______________.

a)

element

b)

compound

c)

mixture

d)

molecule

6.

A ____________________ is a combination of may different elements not chemically combined.

a)

element

b)

Compound

c)

mixture

d)

molecule

7.

Which substance represented in this equation is classified as an element?

CO + H2O → CO2 + H2

a)

CO

b)

H2O

c)

CO2

d)

H2

8.

Chex Mix is an example of

a)

Element

b)

Compound

c)

Mixture

9.

Chocolate Milk is an example of

a)

Element

b)

Compound

c)

Mixture

10.

H2O is an example of

a)

Element

b)

Compound

c)

Mixture

11.

CO2 is an example of

a)

Element

b)

Compound

c)

Mixture

12.

Au is an example of

a)

Element

b)

Compound

c)

Mixture

13.

O is an example of

a)

Element

b)

Compound

c)

Mixture

14.

Salt is an example of

a)

Element

b)

Compound

c)

Mixture

15.

H3PO4 is an example of

a)

Element

b)

Compound

c)

Mixture

16.

Mud is an example of

a)

Element

b)

Compound

c)

Mixture

17.

NaCl is an example of

a)

Element

b)

Compound

c)

Mixture

18.

Which of the following is not a compound?

a)

HCl

b)

NaCl

c)

Cl

d)

CO2

19.

Two or more substances in the same place but NOT chemically combined or in a

specific ratio is called ___.

a)

Element

b)

Compund

c)

Mixture

d)

Pure Substance

20.

Select all of the compounds from the list of words and symbols. (There is more than one correct answer.)

a)

Tea

b)

Oxygen

c)

Water

d)

CO2

e)

NaCl

21.

Select the mixtures from the list of words and symbols. ( There is more than one answer.)

a)

Mud

b)

Oxygen

c)

NaCl + H2O

d)

CO2

e)

Tea

22.

Which of the following is the best description of an element?

a)

A substance that cannot be broken down into simpler substances.

b)

A naturally occurring mineral made of more than one substance.

c)

A small particle made with a specific chemical composition.

d)

A collection of atoms that have different abilities when joined together.

23.

Provided is a list of five different substances.

NaOH     Cu    H2O     N2    H2

How many of these substances are elements?

a)

2

b)

3

c)

4

d)

5

24.

How are elements and compounds different?

a)

A compound is represented by a chemical formula, and elements are represented by a chemical symbol.

b)

Compounds are represented by chemical symbols of one letter, and elements are represented by symbols of two letters.

c)

Elements are pure substances, and compounds are not.

d)

Elements are always larger units of matter, and compounds are smaller.

25.

Below is a list of some substances and their symbols.

Oxygen O

Sodium Chloride NaCl

Gold Au

Neon Ne

How many of these substances are an example of an element?

a)

1

b)

2

c)

3

d)

4

26.

A(n) ______________ is formed when two or more elements chemically combine.

a)

Compound

b)

Element

c)

Mixture

27.

A ___________ is a combination of many different elements not chemically combined.

a)

Element

b)

Compound

c)

Mixture

28.

Copper - Cu

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

29.

Oil and Water

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

30.

Chalk - CaCO3

a)

Element

b)

Compound

c)

Homogeneous Mixture

d)

Heterogeneous Mixture

31.
a)
Element
b)
Compound
c)
Mixture
32.

The diagram shows

a)

element

b)

mixture

c)

compound

33.

Is this an element, compound or mixture?

(Each color circle is a different atom and touching circles are molecules.)

a)

Element

b)

Compound

c)

Mixture

34.

Is this an element, compound or mixture?

(Each color circle is a different atom and touching circles are molecules.)

a)

Element

b)

Compound

c)

Mixture

35.

Is this an element, compound or mixture?

(Each color circle is a different atom and touching circles are molecules.)

a)

Element

b)

Compound

c)

Mixture

36.

Is this an element, compound or mixture?

(Each color circle is a different atom and touching circles are molecules.)

a)

Element

b)

Compound

c)

Mixture

37.

Is this an element, compound or mixture?

(Each color circle is a different atom and touching circles are molecules.)

a)

Element

b)

Compound

c)

Mixture

38.

Is this an element, compound or mixture?

(Each color circle is a different atom and touching circles are molecules.)

a)

Element

b)

Compound

c)

Mixture

39.

Air is an example of .......

a)

Element

b)

Compound

c)

Mixture

40.

Helium is an example of .......

a)

Element

b)

Compound

c)

Mixture

41.

Carbon Dioxide is an example of .......

a)

Element

b)

Compound

c)

Mixture

42.

Gold is an example of .......

a)

Element

b)

Compound

c)

Mixture

43.

Coke is an example of .......

a)

Element

b)

Compound

c)

Mixture

44.

Salt is an example of .......

a)

Element

b)

Compound

c)

Mixture

45.

Water is an example of .......

a)

Element

b)

Compound

c)

Mixture

46.

Kool-aid is an example of .......

a)

Element

b)

Compound

c)

Mixture

47.

Oxygen is an example of .......

a)

Element

b)

Compound

c)

Mixture

48.

Chocolate Milk is an example of .......

a)

Element

b)

Compound

c)

Mixture

49.

Pure substances that cannot be broke down into simpler substances.

a)

Element

b)

Compound

c)

Mixture

50.

Air is an example of

a)

Element

b)

Compound

c)

Mixture

51.

The kids are using sugar to make cookies, sugar is an example of

a)

Element

b)

Compound

c)

Mixture

52.

The man is carrying bags of aluminum cans. Aluminum is an example of

a)

Element

b)

Compound

c)

Mixture

53.

The food in the middle is an example of

a)

Element

b)

Compound

c)

Mixture

54.

When people marry they exchange rings, these rings are frequently made of gold. Gold is an example of

a)

Element

b)

Compound

c)

Mixture

55.

Bees provide us with honey that we can eat. Honey is an example of

a)

Element

b)

Compound

c)

Mixture

56.

Neon lights, like the one below, typically have the gas neon (Ne) in them, and it lights up when an electrical current passes through the gas.  Neon is an example of

a)

Element

b)

Compound

c)

Mixture

57.

The following picture is of a substance known as silicon dioxide (SiO2), this is an example of 

a)

Element

b)

Compound

c)

Mixture

58.

The picture shows a silver coffee pot, the silver (Ag) it is made of is an example of 

a)

Element

b)

Compound

c)

Mixture

59.

The following shows acetic acid (CH3COOH) this is an example of

a)

Element

b)

Compound

c)

Mixture