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Elements, Compounds, Mixtures and Solubility Quiz Review

Total questions: 76

Worksheet time: 48mins

Name
Class
Date
1.

A pure substance that cannot be broken down into any other substance.

a)

Elements

b)

Compounds

c)

Mixtures

2.

A chemical formula is used to represent a(n) _________________.

a)

Element

b)

Compound

c)

Mixture

3.

H2O

a)

Element

b)

Compound

c)

Mixture

4.

CO2

a)

Element

b)

Compound

c)

mixture

5.

Cl

a)

Element

b)

Compound

c)

Mixture

6.

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

a)

Element

b)

Compound

c)

Mixture

7.

Which are examples of a mixture?

a)

Table salt

b)

Salt water

c)

Oxygen

d)

Air

8.
Which of the following is a way in which elements and compounds are similar?
a)
Elements and compounds are pure substances.
b)
Elements and compounds are both made up of different kinds of atoms.
c)
Elements and compounds can both be broken down by physical means.
d)
Elements and compounds are listed on the periodic table.
9.

What is a substance made of two or more elements that are chemically combined called?

a)

A. element

b)

B. compound

c)

C. mixture

d)

D. solution

10.
All matter is made of .....
a)
energy 
b)
atoms 
c)
air
d)
chemistry
11.

Two or more physically combined substances form

a)

a compound.

b)

an acid.

c)

an element.

d)

a mixture.

12.

A substance that contains only one type of atom is a(n)

a)

compound

b)

element

c)

heterogeneous mixture

d)

homogeneous mixture

13.

A compound is made of ________ atoms.

a)

big

b)

similar

c)

different

14.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
15.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
16.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture
17.

The smallest unit of an element is

a)

a compound.

b)

a molecule.

c)

an atom.

d)

a mixture.

18.

The smallest unit of a compound is

a)

an element.

b)

a molecule.

c)

an atom.

d)

a mixture.

19.

In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?

a)

I

b)

II

c)

III

d)

IV

20.
This diagram represents a _____.
a)
pure substance that is a compound
b)
mixture of elements
c)
pure substance that is an element
d)
mixture of compounds
21.
a)
Element
b)
Compound
c)
Mixture of compound and element
d)
Mixture of elements
22.
a)
Element
b)
Compound
c)
Mixture of compound and element
d)
Mixture of two elements
23.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Compounds
d)
Mixture of Elements
24.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
25.

Mixtures

a)

can be separated physically

b)

are chemically combined

c)

have a chemical formula

d)

are only one thing.

26.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
27.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
28.
How many atoms are there TOTAL in:
H2SO4
a)
6
b)
5
c)
7
d)
3
29.
Are these molecules also compounds?
a)
YES
b)
NO
30.
Are these molecules also compounds?
a)
YES
b)
NO
31.

The image above shows a...

a)

molecules

b)

compounds

c)

pure substance

d)

mixture of atoms

32.
Classify the picture with the correct label.
a)
Mixture of Compounds
b)
Mixture of Elements
c)
Compound
d)
Mixture of Elements & Compounds
33.

Element, mixture, or compound?

a)

element

b)

mixture

c)

compound

34.

Element, mixture, or compound?

a)

element

b)

mixture

c)

compound

35.

How many molecules are in this picture?

a)

1

b)

2

c)

3

d)

4

36.

How many elements are in this picture?

a)

1

b)

2

c)

3

d)

4

37.

How many compounds are in this picture?

a)

1

b)

2

c)

3

d)

4

38.

What do you see in this picture?

a)

A pure element

b)

A pure compound

c)

A mixture of two elements

d)

A mixture of two compounds

e)

A mixture of an element and a compound

39.

What do you see in this picture?

a)

A pure element

b)

A pure compound

c)

A mixture of two elements

d)

A mixture of two compounds

e)

A mixture of an element and a compound

40.

How many different types of elements are found in

CuSO4?

(Type only in numbers!)

(a)  

41.

How many atoms in total are found in

CuSO4?

(Type only in numbers!)

(a)  

42.

What does this illustrate

a)

Elements

b)

Compunds

c)

Mixture of Elements and Compunds

d)

Mixture of Compounds

43.
Which one of the following would you use to separate sand from iron filings?
a)
a bar magnet
b)
filter paper
c)
chromatography paper
d)
alum
44.

A mixture of iron filings and chalk dust is placed on a plate. Which of the following could be done to gather the iron filings?

a)

Pour the mixture into a funnel

b)

Put the mixture in a pot on the stove

c)

Run a magnet over the mixture

d)

Filter the mixture through a strainer

45.

What is the BEST tool to separate gravel from sand?

a)

use a magnet

b)

use tweezers

c)

pour the mixture through filter paper

d)

use a strainer or sieve

46.

Which of the following mixtures may be separated using filtration?

a)

oil and water

b)

salt from salt water

c)

sand and iron fillings

d)

coconut milk from shredded coconut fruit (a solid)

47.

Salt is dissolved in water. How can you separate the salt from water?

a)

add more salt

b)

filter the water

c)

dispose the water

d)

boil the water and let it evaporate

48.
A student collects seashells at the beach.  Ms. Deering will not allow the student to take any sand on the bus.  If the student wishes to take the seashells home he must separate the seashells from the sand. Which of the following would be most helpful when trying to separate the sand from the sea shells?
a)
hot plate
b)
water 
c)
sieve
d)
magnet
49.

The properties of a compound are the same as the properties of the elements making up the compound.

a)

True

b)

False

50.

A change in matter that makes a new substance is called _____.

a)

chemical reaction

b)

mixture

c)

physical change

d)

solution

51.

The simplest unit of a chemical compound that can exist; formed when two or more atoms join together chemically

a)

Atom

b)

Compound

c)

Molecule

52.
What is a solute?
a)
The substance that does the dissolving in a solution.
b)
The substance that is dissolved into the solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
53.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
54.

Fish breathe oxygen, which is dissolved in water. Is the oxygen the fish breathe considered to be the solute or solvent?

a)

Solute

b)

Solvent

55.

You make a pitcher of lemonade by adding lemon juice, sugar, ice and water. Which of the following are the solutes in the solution? Click all that apply.

a)

Lemon juice

b)

Sugar

c)

Water

d)

Ice

56.
Solutions are composed of __________ .
a)
salts and solutes
b)
solvents and salts
c)
solutes and alloys
d)
solutes and solvents
57.

If I dissolve carbon dioxide in water, what is the solvent?

a)

Carbon Dioxide

b)

There is no solvent

c)

Oxygen

d)

Water

58.

Solutes dissolve quicker if you stir them.

a)

true

b)

false

59.

Solutes dissolve quicker in _________ water.

a)

cold

b)

warm

60.
Solubility is defined as
a)
the ability to catch on fire
b)
the ability to be dissolved
c)
the ability to fly.
d)
the ability to get on Mrs. D's nerves.
61.
In a sample of salt water, NaCl would be considered the ______.
a)
Solution
b)
Solute
c)
Solvent
d)
Solvation
62.
If we are making Kool-aid with sugar, Kool-aid powder, and water, which part is the solvent?
a)
water
b)
powder
c)
sugar
d)
powder and sugar
63.

Which of the following statements is true?

a)

B is a saturated solution

b)

A is a supersaturated solution

c)

C is an unsaturated solution

d)

None of the above

64.

As the temperature increases, the rate at which the solute dissolves ____________

a)

remains the same

b)

decreases

c)

also increases

d)

none of the above

65.

What do you call a solution that contains less than the maximum amount of solute that is capable of being dissolved?

a)

unsaturated solution

b)

saturated solution

c)

supersaturated solution

d)

insoluble solution

66.

Which of the following best describes a supersaturated solution?

a)

a solution that contains the maximum amount of solute that is capable of being dissolved

b)

a solution that contains less than the maximum amount of solute that is capable of being dissolved.

c)

a solution that contains more than the maximum amount of solute that is capable of being dissolved.

d)

none of the above

67.
When a solution is saturated:
a)
No additional material will dissolve in it
b)
You need to stir it more 
c)
Two materials have combined to create a clear liquid
d)
Crystals form 
68.

How do you know when you have a saturated solution?

a)

You don't see anymore material in the solution. It has dissolved.

b)

The material dissolves and no more will dissolve because you see it collect at the bottom.

c)

The solution is bubbling and cloudy.

d)

The solution is clear and there is nothing at the bottom.

69.

To separate a solution (example: salt water), you can ________________ it.

a)

filter

b)

evaporate

c)

solute

d)

saturate

70.

If the solution contains the maximum amount it can dissolve by a given amount of solvent, it is ___________

a)

Supersaturated

b)

Unsaturated

c)

Solubility

d)

Saturated

71.

If you add a solute to a solution and the solution crystalizes is this solution saturated, unsaturated or supersaturated?

a)

saturated

b)

unsaturated

c)

supersaturated

72.

Define the term insoluble.

a)

Can dissolve in water.

b)

Cannot dissolve in water.

c)

Partially dissolves in water.

73.

Define the term soluble.

a)

Can dissolve in water

b)

Cannot dissolve in water

c)

Partially dissolves in water

74.

True or False: Splitting a compound requires a chemical reaction to occur.

a)

True

b)

False

75.

When using the Hoffman apparatus to split the compound water, we noticed that compounds have _________ properties as the elements that make them.

a)

the same

b)

different

76.

Water (H2O), which is a colorless liquid, was split into _____________ (colorless gas(es)) when using the Hoffman Apparatus.

a)

just hydrogen gas

b)

CO2

c)

hydrogen gas and oxygen gas

d)

just oxygen gas

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