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pure substances vs mixtures zachry

Total questions: 118

Worksheet time: 57mins

Name
Class
Date
1.

The particle diagram shown is a:

a)

pure substance

b)

mixture

2.

The particle diagram shown is a:

a)

pure substance

b)

mixture

3.

Which picture(s) represents a mixture between two elements?

a)

A

b)

B

c)

C

d)

A and C

4.

Which picture(s) represents a mixture between an element and a compound?

a)

A

b)

B

c)

D

d)

B and D

5.

Which picture represents a mixture that is 75% compound and 25% element?

a)

A

b)

B

c)

C

d)

D

6.

True or False: Each part of a mixture keeps its properties when mixed.

a)

True

b)

False

7.

Homogeneous mixture is

a)

A mixture with a composition that varies from point to point

b)

A mixture with a uniform composition and appears visually the same throughout

8.
Carbon is considered an element while carbon dioxide is considered a compound. This is because carbon dioxide is –
a)
a gas at room temperature.
b)
made of two different elements.
c)
given off by green plants.
9.

[check all that apply] Pure substances include:

a)

Elements

b)

Homogeneous Mixtures

c)

Compounds

d)

Heterogeneous Mixtures

10.

An element is?

a)

Chemically combined

b)

Pure substances that can be broken down

c)

Pure substances that cannot be broken down into simpler substances

d)

One or more elements chemically combined.

11.

[check all that apply] An compound is?

a)

Chemically combined

b)

Pure substances that can be broken down

c)

Pure substances that cannot be broken down into simpler substances

d)

One or more elements chemically combined.

12.

[check all that apply] Mixtures are

a)

chemically combined

b)

composed of two or more types of matter that can be present in varying amounts

c)

One or more elements chemically combined

d)

can be separated by physical changes

13.

Saltwater is

a)

Mixture

b)

Compound

14.

Heterogeneous mixture is

a)

A mixture with a composition that varies from point to point

b)

A mixture with a uniform composition and appears visually the same throughout

15.

Chicken noodle soup is

a)

Homogeneous mixture

b)

Heterogeneous mixture

16.

In a mixture, which of the following is always true?

a)

It is a liquid.

b)

It contains dissolved solids.

c)

It is composed of two or more pure substances.

d)

It cannot be separated into individual components.

17.

Air:

Pure Substance or Mixture?

a)

Pure Substance

b)

Mixture

18.

Aluminum:

Pure Substance or Mixture?

a)

Pure Substance

b)

Mixture

19.

Nail Polish:

Pure Substance or Mixture?

a)

Pure Substance

b)

Mixture

20.

Diamond:

Pure Substance or Mixture?

a)

Pure Substance

b)

Mixture

21.

Water:

Pure Substance or Mixture?

a)

Pure Substance

b)

Mixture

22.

Dr. Pepper:

Pure Substance or Mixture?

a)

Pure Substance

b)

Mixture

23.

A _____________ contains a variety of elements and compounds that are not chemically combined with each other.

a)

compound

b)

element

c)

molecule

d)

mixture

24.

A __________________ is a substance that has definite physical and chemical properties such as appearance, melting point, and reactivity.

a)

mixture

b)

pure substance

c)

compound

d)

element

25.

A _________________ mixture is one where the substances are evenly spread throughout.

a)

heterogeneous

b)

homogeneous

c)

pure substance

26.

A type of mixture that falls in between suspensions and solutions are called ______________.

a)

solutions

b)

colloids

c)

suspensions

d)

pure substances

27.

A snow globe would be an example of a __________________.

a)

colloid

b)

solution

c)

suspension

28.

Milk and gelatin are examples of __________________.

a)

suspensions

b)

colloids

c)

solutions

29.

Tea and air are examples of ________________.

a)

solutions

b)

suspensions

c)

colloids

30.

Fruit Loops, pizza, and Skittles are examples of ____________________ mixtures.

a)

heterogeneous

b)

homogeneous

c)

pure

31.

Coffee, mouthwash, and vinegar are examples of __________________ mixtures.

a)

heterogeneous

b)

homogeneous

c)

pure

32.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

33.

Identify the following substance.

a)

Element

b)

Compound

c)

Mixture

d)

Diatomic Molecule

34.

Identify the following substance

a)

Element

b)

Compound

c)

Mixture

d)

Diatomic Molecule

35.

What is the atomic mass of the element in the square?

a)

6

b)

Carbon

c)

12

d)

7

36.

How many protons does an Aluminum atom have?

a)

13

b)

14

c)

26

d)

27

37.

What is the chemical formula for this molecule?

a)

NN

b)

2N

c)

N2N_2  

d)

NO2NO_2  

38.

What is the chemical formula for this molecule?

a)

OH

b)

HO

c)

HHO

d)

H2OH_2O

39.

Which is a diatomic element?

a)

O2O_2

b)

O3O_3

c)

Cl

d)

H2OH_2O

40.

Select all the pure substances below (pick 3).

a)

element

b)

compound

c)

molecule

d)

mixture

41.

Classify the substance: pizza.

a)

element

b)

compound

c)

mixture

42.

Select all the elements. (Pick 3.) H2OH_2O

a)

H2OH_2O  

b)

Nitrogen

c)

Oxygen

d)

Cl2Cl_2  

e)

NaCl

43.

What is matter?

a)

Anything that has mass and takes up space

b)

Velocity divided by time

c)

The amount of space an object takes up

d)

The weight of an object

44.

Which of the following would be considered a Homogeneous mixture?

a)

Sweet Tea

b)

Vegetable soup

c)

Caesar salad

d)

Mud

45.

What is the definition of a mixture?

a)

2+ different substances physically combined

b)

2+ different elements chemically combined

c)

matter with a uniform and definite composition

46.

What is the definition of a pure substance?

a)

2+ different substances physically combined

b)

2+ different elements chemically combined

c)

matter with a uniform and definite composition

47.

Which of the following are examples of MIXTURES?


Select all that apply!

a)

Chicken Noodle Soup

b)

Oxygen Gas

c)

Pure Gold

d)

Air

e)

Burrito Bowl from Chipotle

48.

Which of the following are examples of ELEMENTS?


Select all that apply!

a)

H2O

b)

O2

c)

Au

d)

Fe

e)

Trail Mix

49.

Which of the following are examples of COMPOUNDS?


Select all that apply!

a)

H2O

b)

O2

c)

Blood

d)

Fe

e)

C6H12O6

50.

Which of the following are examples of HETEROGENEOUS MIXTURES?


Select all that apply!

a)

H2O

b)

Air

c)

Pizza

d)

Chicken Noodle Soup

e)

Dirt

51.

Where would you look to check if a substance is an Element?

a)

The Periodic Table of Elements

b)

A calculator

c)

The graffiti on the bathroom walls

d)

The center of a Tootsie Pop

52.
a)

Pure Substance

b)

Mixture

53.
a)

Pure Substance

b)

Mixture

54.

Salt

a)

Pure Substance

b)

Mixture

55.

Coffee

a)

Pure Substance

b)

Mixture

56.
Salt dissolves in water like ----
a)
Pepper dissolves in water
b)
Sugar dissolves in water
c)
Rocks dissolve in water
d)
Seeds dissolve in water
57.

True or False: Mixtures can be separated by physical processes.

a)

True

b)

False

58.

In which mixture can you see all of the parts?

a)

homogeneous

b)

heterogeneous

59.
What is a mixture?
a)
elements chemically combined
b)
a combination of different things
c)
it is found on the Periodic Table 
d)
it is made of chemical
60.
Sand floating in water, but most of the sand is settled at the bottom this an example of which type of mixture?
a)
A solution
b)
A colloid
c)
A suspension
d)
A compound
61.
A solution that is considered dilute would be....
a)
Dark in color
b)
Have a strong scent
c)
Have a large amount of solute
d)
Have a small amount of solute
62.
The air around was is  a mixture of gases.
a)
True
b)
False
63.

What is a mixture in which all the parts are EVENLY mixed?

a)

energy

b)

beaker

c)

solution

d)

salad

64.

Which of the following is a solution?

a)

geletin with blueberries

b)

granola

c)

juice

d)

salad

65.

Which of the following is a solution?

a)

lemonade

b)

trail mix

c)

legos

d)

iron filings and sand

66.
Coloured water is an example of a
a)
homogeneous mixture
b)
heterogeneous mixture
67.

What is the definition of a solvent?

a)

The substance that is dissolved.

b)

The substance in which the solute is dissolved.

c)

Unable to be dissolved.

68.

Lauren wants to separate salt from water. What separation technique should she use?

a)

Evaporation

b)

Filtration

c)

Chromatography

69.

Matt wants to separate soda from water. What technique should he use?

a)

Evaporation

b)

Simple Distillation

c)

Filtration

70.

In which mixture can you see all of the parts?

a)

homogeneous

b)

heterogeneous

71.

In which mixture can you not see all of the parts?

a)

homogeneous

b)

heterogeneous

72.

What is helium?

a)

compound

b)

element

c)

mixture

73.

What is acid rain?

a)

compound

b)

element

c)

mixture

74.
Sand and gravel may be separated from each other through using..
a)
a filter funnel
b)
a sieve
c)
an evaporating basin
d)
a distillation
75.
Which of the following pairs of substances may best be separated through distillation
a)
 sand and soil
b)
water and soil
c)
salt and sand
d)
 water and alcohol
76.
Which one of the following solids is insoluble in water?
a)
sugar
b)
sand
c)
copper sulfate
d)
salt
77.
Name the separation technique shown in the diagram.
a)
evaporation
b)
distillation
c)
 filtration
d)
decanting
78.
Sodium chloride can be separated from rock salt by first adding water to the mixture to dissolve the sodium chloride. The separation then takes place in two stages:
a)
evaporation followed by filtration
b)
 distillation followed by decanting
c)
filtration followed by evaporation
d)
filtration followed by decanting
79.
The separation technique that involves heating a solution until the liquid changes into a gaseous state, leaving behind a solid is known as
a)
decanting
b)
 evaporation
c)
loading
d)
chromatography
80.
Which one of the following methods is used to separate the colours in food dyes?
a)
winnowing
b)
Threshing
c)
Crystallization
d)
chromatography
81.
The separation technique shown in the diagram is
a)
fractional distillation
b)
centrifugation
c)
filtration
d)
chromatography
82.
In a coffee machine, the ground coffee is separated from the coffee solution by using..
a)
sand paper
b)
 filter paper
c)
toilet paper
d)
 tissue paper
83.
Dyes in water soluble markers may be separated by means of..
a)
crystallization
b)
sublimation
c)
chromatography
d)
sedimentation
84.
Water and alcohol are easily separated by distillation because of their
a)
 different melting points
b)
different colours
c)
different densities
d)
different boiling points
85.
Which one of the following is NOT a mixture?
a)
Sugar
b)
Paint
c)
Crude oil
d)
Air
86.
Salt and water are
a)
compound
b)
mixture
c)
element
d)
solute
87.
A process in which a liquid changes in to vapor or gas by boiling throughout is called
a)
Fractional distillation
b)
filtration
c)
distillation
d)
evaporation
88.
Boiling point is a point at which liquid turns in to..
a)
solid
b)
liquid
c)
molten
d)
gas
89.
Iron fillings can be separated from iron and Sulphur mixture by
a)
sedementation
b)
heating
c)
magnetic attraction
d)
seiving
90.
A pure substance that cannot be broken down into other substances by chemical or physical means. 
a)
compound          
b)
atom
c)
mixture 
d)
element
91.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

92.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

93.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

94.

Which of these is a mixture?

a)

Laundry Detergent

b)

Salt (NaCl)

c)

Oxygen (O)

d)

Fluorine (Fl)

95.

Air is:

a)

An element

b)

A compound

c)

A mixture

d)

None of these

96.
What is an example of a mixture?
a)
iron
b)
ice
c)
soil
d)
gold
97.

Which of the following is classified as a pure substance?

a)

Lemonade

b)

Fruit punch

c)

ketchup

d)

Helium

98.
A mixture that is uniform and well mixed is _____.
a)
homogeneous
b)
hetergeneous
c)
pure substance
d)
compoud
99.

___________ are the smallest unit of an element that maintains the properties of that element.

a)

Atoms

b)

Elements

c)

Compounds

d)

Mixtures

100.

An _______________ is made up of one or more of the same kind of atom chemically combined.

a)

atom

b)

element

c)

molecule

d)

compound

101.

True or False: elements AND compounds are pure substances.

a)

True

b)

False

102.

A ______________ is made up of different kinds of atoms chemically combined.

a)

element

b)

compound

c)

mixture

d)

molecule

103.

_______________ are mixtures in which its particles are too big to stay mixed without being stirred or shaken.

a)

Solutions

b)

Colloids

c)

Suspensions

104.

Milk and gelatin are examples of __________________.

a)

suspensions

b)

colloids

c)

solutions

105.

A snow globe would be an example of a __________________.

a)

colloid

b)

solution

c)

suspension

106.

Tea and air are examples of ________________.

a)

solutions

b)

suspensions

c)

colloids

107.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

108.

What is this?

a)

Atoms of an element

b)

Mixture

c)

Compound

d)

Molecules

109.

What are these?

a)

Molecules of compounds

b)

Elements

c)

An atom

d)

Mixture

110.

This is

a)

a compound.

b)

an element.

c)

an atom.

d)

a mixture.

111.

Which classification of matter is composed of two or more substances which are physically combined?

a)

atoms

b)

pure substances

c)

mixtures

d)

elements

112.

Which of the following is INCORRECT about pure substances?

a)

formed by combining two or more components

b)

have definite composition

c)

all elements are pure substances

d)

composed of only one kind of material

113.

Pancake batter

a)

pure substance

b)

mixture

114.

Which of the following is NOT a mixture?

a)

milk

b)

lemonade

c)

vegetable salad

d)

aluminum

115.

Rainwater

a)

Homogeneous

b)

Heterogeneous

116.

Which of the following examples are heterogeneous mixtures?

a)

soda and carbonated drinks

b)

air and sweat

c)

blood and concrete mix

d)

coffee drink and lemonade

117.

define Evaporation

a)

The process of conversion of water into water vapor is called evaporation.

b)

The process of conversion of water vapor into its liquid form is called evaporation

118.

the amount of matter in an object.

a)

mass

b)

mixture

c)

physical property

d)

solubility

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