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Matter (Pure Substances and Mixtures) Review

Total questions: 68

Worksheet time: 6hrs 40mins

Name
Class
Date
1.

True or False: elements AND compounds are pure substances.

a)

True

b)

False

2.

In which mixture can you see all of the parts?

a)

homogeneous

b)

heterogeneous

3.

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

a)
b)
c)
d)
4.

Solutions are ___________ mixtures.

a)

Solid

b)

Homogenous

c)

Heterogeneous

d)

Gas

5.

A material with a particular chemical makeup

a)

mixture

b)

pure substance

c)

hetogeneous

d)

homogeneous

6.
Coloured water is an example of a
a)
homogeneous mixture
b)
heterogeneous mixture
7.

Substances in a mixture can be separated by physical methods.

a)

TRUE

b)

FALSE

8.

This technique is based on the differences of the boiling point of the substance in the mixture.

a)

decantation

b)

distillation

c)

filtration

d)

chromatography

9.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds and elements
10.

It is a technique in which an insoluble solid is separated from a liquid.

a)

Filtration

b)

Sieving

c)

Decantation

d)

Use of Magnets

11.

It involves separating a mixture based on different sizes of components.

a)

Decantation

b)

Sieving

c)

Use of Magnets

d)

Filtration

12.

Which of the following is an example of a solution?

a)

salt in water

b)

sand and water

c)

rocks and water

d)

pebbles and water

13.

Sand in Water

a)

Solution

b)

Suspension

c)

Colloid

14.

Vinegar

a)

Solution

b)

Suspension

c)

Colloid

15.

Which of the following is the best example of a homogeneous mixture?

a)

honey

b)

guacamole

c)

trail mix

d)

chicken noodle soup

16.

Which sample shows a mixture?

a)
b)
c)
17.

Each substance keeps its own properties in this type of matter:

a)

element

b)

compound

c)

mixture

d)

pure substance

18.

Which sample shows a pure substance?

a)
b)
c)
19.

Which of the following is a mixture?

a)

Glucose (C6H12O6)

b)

Salt Water (NaCl + H2O)

c)

Iron (Fe)

d)

Gold (Au)

20.

Which of the following would be most helpful in separating a mixture of iron filings and sand?

a)

a magnet

b)

a filter paper and funnel

c)

water

d)

sifter

21.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
22.
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
23.
a)
element
b)
compound
c)
mixture of elements and compounds
d)
mixture of compounds
24.

a)

element

b)

compound

c)

heterogeneous mixture

d)

homogeneous mixture

25.

Salt (NaCl)

a)

Element

b)

Compound

c)

Mixture

26.

H2 + Mg

a)

Element

b)

Compound

c)

Mixture

27.

Magnesium

a)

Element

b)

Compound

c)

Mixture

28.

H2O

a)

Element

b)

Compound

c)

Mixture

29.

Hydrogen gas

a)

Element

b)

Compound

c)

Mixture

30.
A substance that contains only one type of atom is a(n)
a)
compound
b)
element
c)
heterogeneous mixture
d)
homogeneous mixture
31.

2 or more different substances that are physically together is called...

a)

element

b)

compound

c)

mixture

d)

solute

32.
Which of the following lists only elements?
a)
H2O + OH, MgCl2
b)
H2O, KF, Ne
c)
KCl, Ag, Au
d)
K, Cl, N
33.

Jay combines water, sugar, and lemon juice to form lemonade. What type of substance was made?

a)

Element

b)

Molecule

c)

Mixture

34.

_____ - made up of two or more elements chemically bonded together.

a)

Element

b)

Compound

c)

Mixture

35.

Which of the following is a homogeneous mixture?

a)

Pure platinum bar

b)

Salt water

c)

Carbon dioxide

36.

Which of the following a correct way to separate a compound?

a)

A reaction must occur to break the bonds

b)

Distillation using boiling points

c)

Filtering using paper to hold the solid from the liquid

d)

Magnetic Attraction to separate metals from non-metals

37.

Which of the following a correct way to separate a mixture?

a)

A reaction must occur to break the bonds

b)

Distillation using boiling points

c)

Mixtures cannot be separated

d)

Combustion of some kind

38.

Which of the following a correct way to separate an element?

a)

A reaction must occur to break the bonds

b)

Distillation using boiling points

c)

Elements cannot be separated

d)

Filtering to separate a solid from a liquid

39.

Where do you find the elements names and symbols?

a)

Periodic table

b)

You have to memorize them all

c)

Your friend's homework

d)

Google knows all

40.

All phases changes are considered...

a)

physical and therefore relate to mixtures.

b)

chemical and therefore relate to compounds.

c)

physical and therefore relate to elements.

d)

chemical and therefore relate to molecules.

41.

Evaporation uses __________ to separate liquids or solids from mixtures.

a)

boiling

b)

magnets

c)

polarity

d)

lightwaves

42.

Colloids are examples of...

a)

heterogenous mixtures

b)

homogenous mixture

c)

compounds

d)

pure substances

43.

All the separation techniques we learned about are

a)

chemical means of separating matter.

b)

physical means of separating matter.

c)

reactive means of separating matter.

d)

unclear means of separating matter.

44.

In order to separate a compound into its individual parts what would need to happen?

a)

Chemical Change

b)

Physical Change

45.

In order to separate a mixture into its individual parts what would need to happen?

a)

Chemical Change

b)

Physical Change

46.

Ink can be separated by a method of -----------------------------------------------

a)

distillation

b)

filtration

c)

chromatography

d)

sedimentation

47.
chromatography separates the mixture of dyes on the basis of their ----------------------------
a)
density
b)
solubility
c)
gravity
d)
boiling point
48.
The diagram below shows a chromatogram obtained when a sample X was analysed together with four other known dyes P, Q, R and S. Dye Q was known to cause cancer. Which of the following dye(s) is/are safe for use?
a)
P only
b)
S only
c)
P and S
d)
P and X
49.

A substance is soluble if it can be dissolved.


In paper chromatography, the most soluble solute _____________________ .

a)

does not move from the start point

b)

stays closest to the start point

c)

travels furthest away from the start point

d)

can be found in the middle of the chromatogram

50.
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
51.

Which mixture can be separated using a filter?

a)

sand and iron filings

b)

saltwater

c)

sand and water

d)

none of the above

52.

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

a)

True

b)

False

53.

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

a)

True

b)

False

54.

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

a)

Evaporation

b)

Filtration

c)

Chromatography

55.

This technique is based on the differences of the boiling point of the substance in the mixture.

a)

decantation

b)

distillation

c)

filtration

d)

chromatography

56.

Which method is this a picture of?

a)

Filtration

b)

Evaporation

c)

Distillation

d)

Chromatography

57.

Which separation technique would be most effective to see what different pigments make up a black marker?

a)

Centrifugation

b)

Distillation

c)

Chromatography

d)

Magnetism

58.

During filtration, which substance cannot pass through the filter paper?

a)

the solid

b)

the liquid

59.
What is decantation?
a)
Distillation
b)
Desalination
c)
Separating particles by careful pouring.
d)
Measuring boiling points.
60.

Match the following

a)

Sieving

1.

Separate large solids from small solids

b)

Filtration

2.

Separate insoluble solid from a liquid

c)

Evaporation

3.

Separate a soluble solid from a liquid

d)

Distillation

4.

Separates mixtures of liquids by boiling

e)

Chromatography

5.

Separate mixtures by solubility

61.

Match the following

a)

Separating sand from water

1.

Filtration

b)

Separating oil from water

2.

Decantation

c)

Separating different size pebbles

3.

Sieving

d)

Separate salt from salt water

4.

Evaporation

62.

Elements may be found as

a)

Single Atoms Only

b)

Molecules Only

c)

Single Atoms or Molecules

63.

Organize these options into the right categories

Categorize the following

H2SO4

NaCl + H2O

Kool-aid

Distilled Water

Pure Substance
Mixture
64.

Match the following

Categorize the following

H2

Ni

H2O

SrO

Element
Compound
65.

Use the Image to answer the question.

II is a ​ (a)  

III is a ​​ (b)  

IV is a ​ (c)  

Choose from the below words
Homogenous Mixture
Heterogeneous Mixture
Element
Compound
66.

Match the following

a)

Colloid

1.

Medium Particle Size

b)

Solution

2.

Small Particle Size

c)

Suspension

3.

Large Particle Size

67.

Match the following

a)

Suspension

1.

Forms Layers Quickly

b)

Solution

2.

Never Forms Layers

c)

Colloid

3.

Forms Layers Overtime

68.

How can I increase the surface area of a solute I want to dissolve?

a)

Break it into smaller pieces

b)

Stir faster

c)

Increase the temperature

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