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pure substances and mixtures

Total questions: 95

Worksheet time: 43mins

Name
Class
Date
1.

Identify the following substance.

a)

Element

b)

Compound

c)

Mixture

d)

Diatomic Molecule

2.

Identify the following substance

a)

Element

b)

Compound

c)

Mixture

d)

Diatomic Molecule

3.

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

a)

6

b)

Carbon

c)

12

d)

7

4.

How many protons does an Aluminum atom have?

a)

13

b)

14

c)

26

d)

27

5.

How many neutrons does an Aluminum atom have?

a)

13

b)

14

c)

26

d)

27

6.

What is an element?

a)

a molecule made with more than one atom

b)

matter consisting of one kind of atom

c)

two or more substances physically combined

d)

a mixture in which the different parts are visible

7.

What is the chemical formula for this molecule?

a)

NN

b)

2N

c)

N2N_2  

d)

NO2NO_2  

8.

What is the chemical formula for this molecule?

a)

OH

b)

HO

c)

HHO

d)

H2OH_2O

9.

Which is a diatomic element?

a)

O2O_2

b)

O3O_3

c)

Cl

d)

H2OH_2O

10.

Select all the pure substances below (pick 3).

a)

element

b)

compound

c)

molecule

d)

mixture

11.

Classify the substance: pizza.

a)

element

b)

compound

c)

mixture

12.

Select all the elements. (Pick 3.) H2OH_2O

a)

H2OH_2O  

b)

Nitrogen

c)

Oxygen

d)

Cl2Cl_2  

e)

NaCl

13.

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

a)

Atoms

b)

Elements

c)

Compounds

d)

Mixtures

14.
Jorge prepared a drink and salad for dinner. The chart lists the ingredients for both.
Using the information in the chart, which statement is the BEST description of the drink and salad?
a)
The salad and fruit drink are both mixtures.
b)
The salad and the fruit drink are both solutions.
c)
The fruit drink is a mixture because the ingredients can't be separated.
d)
The salad is a solution because the ingredients can't be separated.
15.
What is the smallest unit of matter?
a)
atom
b)
element
c)
molecule
d)
compound
16.
The picture shown here is what type of mixture?
a)
homogeneous
b)
hetergeneous
c)
pure substance
d)
element
17.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

18.

Which of these is a mixture?

a)

Laundry Detergent

b)

Salt (NaCl)

c)

Oxygen (O)

d)

Fluorine (Fl)

19.

Air is:

a)

An element

b)

A compound

c)

A mixture

d)

None of these

20.

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

a)

Atoms

b)

Elements

c)

Compounds

d)

Mixtures

21.

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

a)

atom

b)

element

c)

molecule

d)

compound

22.

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

a)

element

b)

compound

c)

mixture

d)

molecule

23.

True or False: elements AND compounds are pure substances.

a)

True

b)

False

24.

Elements are broadly classified as metals, nonmetals, and _________________.

a)

compounds

b)

organic

c)

metalloids

d)

Metallica

25.

A ______________ mixture is one that does not have a uniform composition.

a)

heterogeneous

b)

homogenous

c)

pure substance

26.

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

a)

heterogeneous

b)

homogeneous

c)

pure substance

27.

In a ______________, one substance is dissolved in another substance.

a)

solution

b)

suspension

c)

colloid

28.

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

a)

heterogeneous

b)

homogeneous

c)

pure

29.

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

a)

heterogeneous

b)

homogeneous

c)

pure

30.

 Soil 

a)

 Homogeneous 

b)

 Heterogeneous 

c)

 Pure Substance

d)

Element

31.

 Steel 

a)

 Heterogeneous 

b)

 Homogeneous 

c)

 Compound 

d)

Element

32.

 Sugar 

a)

 Homogeneous 

 

b)

 Heterogeneous 

c)

 Compound 

d)

Element

33.

 Table Salt (NaCl) 

a)

 Heterogeneous 

b)

 Homogeneous 

c)

 Compound 

d)

 Element 

34.

 Coffee 

a)

 Homogeneous 

b)

 Heterogeneous 

c)

 Compound 

d)

Pure Substance

35.

 Orange juice with pulp

a)

 Homogeneous 

b)

 Heterogeneous 

c)

Compound

d)

Pure Substance

36.

 Copper 

a)

 Homogeneous 

b)

 Heterogeneous 

c)

Compound

d)

Element

37.

 Bronze 

a)

 Homogeneous 

b)

 Heterogeneous 

c)

 Element 

d)

 Compound 

38.

Milk

a)

 Heterogeneous 

b)

 Homogeneous 

c)

 Element 

d)

 Compound 

39.

Ice water

a)

 Homogeneous 

b)

 Heterogeneous 

c)

 Element 

d)

 Compound

40.

Pure Substances: matter that is always made up of the same combination of atoms.

Elements and compounds can both be considered pure substances.

a)

True

b)

False

41.

Mixtures: matter that is always made up of the same combination of atoms.

Elements and compounds can both be considered pure substances.

a)

True

b)

False

42.

Heterogeneous: A mixture in which the substances that make up the mixture are not evenly mixed.

a)

True

b)

False

43.

Compounds are two or more substances chemically bonded together.

a)

True

b)

False

c)

Depends on the compound

d)

Compounds are not chemically bonded together

44.

Sweet tea

a)

 Heterogeneous 

b)

 Homogeneous 

c)

 Element 

d)

 Compound 

45.

Which of the following is an example of a compound?

a)

Iron

b)

Water

c)

Bronze

d)

Steel

46.

Salt is not an example of a compound.

a)

True

b)

False

47.

 Air 

a)

 Homogeneous 

 Mixture 

b)

 Heterogeneous 

 Mixture 

c)

 Pure Substance

d)

 Element 

48.

Which of the following best describes compounds?

a)

They can only be separated chemically

b)

They are always liquid at room temperature

c)

They contain the atoms of just one element

d)

They are the same properties as their elements

49.

Sugar ( C12 H22 O11 ) + Water ( H2 O )

a)

 Homogeneous 

b)

 Element 

c)

 Compound 

d)

 Heterogeneous 

50.

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

a)

atoms

b)

pure substances

c)

mixtures

d)

elements

51.

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

52.

sugar

a)

pure substance

b)

mixture

53.

Pancake batter

a)

pure substance

b)

mixture

54.

Which of the following is NOT a mixture?

a)

milk

b)

lemonade

c)

vegetable salad

d)

aluminum

55.

Which describes homogeneous mixtures?

a)

composed of components which are not dissolved

b)

has only 1 phase visible

c)

has 2 or more phases visible

d)

the components remain recognizable

56.

Which type of mixture has particles which are uniformly distributed?

a)

Homogeneous

b)

Heterogeneous

57.

What type of mixture does this diagram represent?

a)

Homogeneous

b)

Heterogeneous

58.

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

59.

Rainwater

a)

Homogeneous

b)

Heterogeneous

60.
What is an example of a mixture?
a)
iron
b)
ice
c)
soil
d)
gold
61.
Jorge prepared a drink and salad for dinner. The chart lists the ingredients for both.
Using the information in the chart, which statement is the BEST description of the drink and salad?
a)
The salad and fruit drink are both mixtures.
b)
The salad and the fruit drink are both solutions.
c)
The fruit drink is a mixture because the ingredients can't be separated.
d)
The salad is a solution because the ingredients can't be separated.
62.
A pure substance that cannot be broken down into other substances by chemical or physical means. 
a)
compound          
b)
atom
c)
mixture 
d)
element
63.
A mixture that is uniform and well mixed is _____.
a)
homogeneous
b)
hetergeneous
c)
pure substance
d)
compoud
64.
The picture shown here is what type of mixture?
a)
homogeneous
b)
hetergeneous
c)
pure substance
d)
element
65.
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
66.

Which of these is an element?

a)

Salt (NaCl)

b)

Water (H20)

c)

Oxygen (O)

d)

Carbon Dioxide (CO2)

67.

Which of these is a compound?

a)

Aluminium (Al)

b)

Carbon Dioxide (CO2)

c)

Nitrogen (N)

d)

Sand

68.

Which of these is a mixture?

a)

Laundry Detergent

b)

Salt (NaCl)

c)

Oxygen (O)

d)

Fluorine (Fl)

69.

Air is:

a)

An element

b)

A compound

c)

A mixture

d)

None of these

70.

Which of the following is classified as a pure substance?

a)

Lemonade

b)

Fruit punch

c)

ketchup

d)

Helium

71.

A combination of substances that can be physically separated from one another

a)

mixtures

b)

compound

c)

element

d)

molecule

72.

A material with a particular chemical makeup

a)

mixture

b)

pure substance

c)

hetogeneous

d)

homogeneous

73.

A characteristic that can be observed (intensive), such as texture, color, odor, melting point, boiling point, density, or measured (extensive) such as mass, length, volume, that is used to describe matter and can be observed or measured without changing its composition

a)

physical property

b)

element

c)

pure substance

d)

chemical property

74.

A characteristic of a substance that is measurable or observable during a chemical reaction; includes pH, heat of combustion, reactivity, etc.

a)

physica property

b)

chemical property

c)

compound

d)

mixture

75.

The nature of something's ingredients or constituents; the way in which a whole or mixture is made up.

a)

composition

b)

element

c)

mixture

d)

compound

76.

A substance that can be dissolved by a solvent to create a solution.

a)

solvent

b)

solute

c)

solution

d)

mixture

77.

A substance that can dissolve a solute when forming a solution.

a)

solute

b)

solution

c)

solvent

d)

mixture

78.

The ability of a substance to be dissolved in a liquid

a)

dissolvent

b)

solubility

c)

combustion

d)

disappearing

79.

a substance in which the parts are clearly different shapes and colors; different throughout

a)

mixture

b)

homogeneous

c)

heterogeneous

d)

element

80.

a substance in which all of the parts are the same throughout

a)

homogeneous

b)

element

c)

heterogeneous

d)

pure substance

81.

Substances that are made up of ONLY one type of atom (element) or compound.

a)

Colloid

b)

Heterogeneous mixture

c)

Pure substance

d)

Suspension

e)

Homogeneous mixture

82.

A _________ is made up of two or more substances that are together in the same place but ARE NOT chemically combined.

a)

Pure substance

b)

Mixture

c)

Solution

d)

Suspension

83.

Identify which images are PURE SUBSTANCES! (Check all that apply) : )

a)
b)
c)
d)
e)
84.

The substances in this mixture DO NOT blend smoothly throughout, and the individual substances that compose the mixture can be detected or seen.

a)

Homogeneous mixture

b)

Heterogeneous mixture

c)

Pure substance

d)

Suspension

85.

The substances in this mixture have been mixed together so well that the different parts will not separate on their own.

a)

Homogeneous mixture

b)

Heterogeneous mixture

c)

Pure substance

d)

Suspension

e)

Solution

86.

Identify which images are HETEROGENEOUS MIXTURES! (Check all that apply)

a)
b)
c)
d)
87.

Solutions are ___________ mixtures.

a)

Solid

b)

Homogenous

c)

Heterogeneous

d)

Gas

88.

Suspensions are ___________ mixtures.

a)

Homogenous

b)

Solid

c)

Common

d)

Heterogeneous

89.

___________ are mixtures with large particles. The particles suspend in the substance and settle/float or can be filtered out of the mixture.

a)

Pure substances

b)

Suspensions

c)

Solutions

d)

Colloids

90.

Solubility is __________________________________.

a)

the amount of solute that can be dissolved by the solution

b)

the amount of solvent that can be dissolved by the solute.

c)

the amount of solute that can be dissolved by the solvent.

91.

In a SOLUTION, the ___________ is the one doing the dissolving.

a)

Solubility

b)

Solvent

c)

Solute

d)

Solution

92.

What are 3 effects on SOLUBILITY? (Check all that apply)

a)

Temperature

b)

Color

c)

Noise

d)

Pressure

e)

Molecular structure

93.

Oil is ________ in water.

a)

soluble

b)

insoluble

c)

dissolved

d)

the solvent

94.

How you would separate a saltwater solution which the water is collected?

a)

Filtration – using filter paper

b)

Distillation – vapor is collected

c)

Evaporation – solution is boiled and remains are collected

d)

Sieve – sifting (through a strainer)

e)

Magnetism – separating using a magnet

95.

In a SOLUTION, the ___________ is the substance to be dissolved.

a)

Solubility

b)

Solvent

c)

Solute

d)

Solution

e)

Suspension

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