wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

is matter around us pure

Total questions: 100

Worksheet time: 50mins

Name
Class
Date
1.

Name the mixture whose particles are large enough to scatter light:

a)

True solution

b)

Homogenous solution

c)

Colloid

d)

all of the above

2.

Which of the following property does not describe a compound:

a)

it is composed of two or more elements

b)

it is a pure substance

c)

constituents cannot be separated by physical means

d)

mixed in any proportion by mass

3.

Smell of Hydrogen sulfide gas

a)

rotten eggs

b)

burning tyre

c)

pleasant

d)

sweet

4.

(a)   is the non-metal which is in liquid state at room tempearture.

5.

Which of the following techniques is used in diagnostic lab for blood and urine test:

a)

Sublimation

b)

Crystallization

c)

Centrifugation

d)

Evaporation

6.

Which of the following is a chemical change?

a)

cooking food

b)

melting of wax

c)

dissolving sugar in water

d)

mixing iron fillings with sulfur powder

7.

The continuous zig-zag movement of colloidal particles in a dispersion medium is called:

a)

Oscillation

b)

Tyndall effect

c)

Dispersion

d)

Brownian movement

8.

The clear liquid which is left behind in the beaker after settling down of sediments is called:

a)

Solvent

b)

Filtrate

c)

Supernatant

d)

Solution

9.

A colloid with a solid dispersed phase and liquid dispersing medium is called (a)   .

10.

If a solution contains 60g of common salt in 340g water, the mass by mass percentage will be (a)   %.

11.

Which of the following is a true solution?

a)

Blood

b)

Milk

c)

Chalk powder in water

d)

Salt solution

12.

(a)   technique can be used to separate different components of chlorophyll.

13.

Boiling point of Nitrogen is ________ deg C.

a)

- 183

b)

-186

c)

-196

d)

-190

14.

We can separate crystals of alum from impure samples through (a)   method.

15.

(a)   is the mixture of two or more metals or a metal and a non-metal and cannot be separated into their components by physical methods.

16.

Two substances A and B when bought together form a substance C with the evolution of heat. The properties of C are entirely different from those of A and B. the substance C is:

a)

A compound

b)

An element

c)

A mixture

d)

None of the above

17.

A sample contains two substances and has uniform properties. The sample is:

a)

A compound

b)

A heterogeneous mixture

c)

An element

d)

A homogeneous mixture

18.

Air is regarded as mixture because?

a)

It's pressure may vary.

b)

It's temperature may vary.

c)

Volume changes under different compositions.

d)

It's compositions may vary.

19.

The amount of solute present per unit volume or per unit mass of the solution/solvent is known as

a)

(a) Composition of solute

b)

(b) Concentration of a solvent

c)

(c) Concentration of a solute

d)

(d) Concentration of a solution

20.

If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of

a)

Evaporation

b)

Precipitation

c)

Condensation

d)

Sublimation

21.

Name the effect

a)

brownian

b)

tyndall

c)

suspension

d)

colloidal

22.
Sugar water is a 
a)
solution
b)
suspension
c)
colloid
23.
Milk is a 
a)
solution
b)
suspension
c)
colloid
24.
type of mixture that doesn't separate on its own but still contains undissolved particles
a)
solution
b)
colloid
c)
suspension
25.

The Tyndall Effect is not visible in which of the following?

a)

Solution

b)

Suspension

c)

Colloid

d)

Heterogeneous Mixture

26.

brass is an alloy. It is a mixture of______

a)

30% Zinc 70% copper

b)

20% copper 80% nickel

c)

40% iron 80% copper

d)

35% gold 65% zinc

27.

colloids can be seperated by

a)

filtration

b)

distillation

c)

sedimentation

d)

centrifugation

28.

formula to find concentration of a solution?

(a)  

29.

how will you seperate sulphur and iron fillings

a)

handpicking

b)

sieving

c)

crystallization

d)

magnetic seperation

30.

how will you seperate oxygen from a mixture of liquid air?

a)

centrifugation

b)

seperating funnel

c)

fractional distillation

d)

distillation

31.

how will you seperate the components of sugar solution

a)

evaporation

b)

crystallization

c)

filtration

d)

chromatography

32.

burning of candle is a

a)

physical change

b)

chemical change

c)

both physical and chemical change

d)

none of the above

33.

a mixture of dye in a volatile liquid can be seperated by?

a)

evaporatoion

b)

sedimentation

c)

chromatography

d)

filtration

34.

Tyndall effect is observed in forests because of

a)

tress

b)

high oxygen level

c)

mist and dust particles in the air

d)

less sunlight

35.

concentration of 36g of NaCl in 100 g of water is

a)

23%

b)

26.47%

c)

29.32%

d)

21.11%

36.

How would H2O be classified? Check all that apply.

a)

Atom

b)

Molecule

c)

Compound

37.

What is an element?

a)

A pure substance that cannot be broken down.

b)

Two atoms bonded together.

c)

Two or more different types of atoms bonded together.

d)

An molecule with an unequal distribution of charge.

38.

What are atoms composed of?

a)

Protons and electrons.

b)

Protons, neutrons, and electrons.

c)

Neutrons and electrons.

d)

Ions, elements, and compounds.

39.

How many H atoms are in H2O?

a)

1

b)

2

40.
Carbon dioxide (CO2) contains how many atoms of oxygen?
a)
0
b)
1
c)
2
d)
3
41.

Name the flask

a)

round bottom flask

b)

flat bottom flask

c)

conical flask

42.

NAME THE APPARATUS

a)

DISTILLATOR

b)

CONDENSOR

c)

FRACTIONATING COLUM

43.

NAME THE SEPARATION TECHNIQUE

a)

FRACTIONAL DISTILLATION

b)

DISTILLATION

c)

SEPARATING FUNNEL

d)

EVAPORATION

44.

NAME THE PROCESS

a)

DISTILLATION

b)

FRACTIONAL DISTILLATION

c)

EVAPORATION

d)

CONDENSATION

45.

NAME THE SEPARATION TECHNIQUE DISTILLATION

a)

EVAPORATION

b)

DISTILLATION

c)

CONDENSATION

46.

NAME THE SEPARATION TECHNIQUE AND NAME THE COMPONENTS IT IS USED TO SEPARATE

4 lines
47.

Air is regarded as a mixture because:

a)

Its pressure may very

b)

Its pressure may very

c)

Its volume changes under different conditions

d)

Its composition may vary

48.

Two substances A and B when bought together form a substance C with the evolution of heat. The properties of C are entirely different from those of A and B. the substance C is:

a)

A compound

b)

An element

c)

A mixture

d)

None of the above

49.

A sample contains two substances and has uniform properties. The sample is:

a)

A compound

b)

A heterogeneous mixture

c)

An element

d)

A homogeneous mixture

50.

White gold is used in jewelry and contains two elements, gold and palladium. A jeweler has two different samples that are both identical in appearance and have a uniform composition throughout. What can be said about the samples?

a)

They are homogeneous mixtures and be classified as metallic alloys.

b)

The materials are heterogeneous mixtures and can be classified by their components

c)

The samples have variable compositions and are classified as metallic solutions.

d)

The samples are heterogeneous mixtures that can be separated using magnetic properties.

51.

.A student is given a mixture of iron filings and sulphur in thee ratio 1 : 2 by weight. He was then asked to heat the mixture over a flame and to observe the olor change. The student will observe that the mixture becomes:

a)

Black

b)

Grey

c)

Yellow

d)

Orange

52.

If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of

a)

Evaporation

b)

Precipitation

c)

Condensation

d)

Sublimation

53.

Air is regarded as mixture because?

a)

It's pressure may vary.

b)

It's temperature may vary.

c)

Volume changes under different compositions.

d)

It's compositions may vary.

54.

In which of the following constituents are present in the ratio?

a)

Mixture.

b)

Compound.

c)

Solution.

d)

Colloid.

55.

A mixture will appear translucent in the case of?

a)

Copper sulphate + water.

b)

Alum + water.

c)

Sugar + water.

d)

Starch + water.

56.

Brass is an example of?

a)

Homogeneous compound.

b)

Homogeneous mixture.

c)

Heterogeneous mixture.

d)

Heterogeneous compound.

57.

The process of removing impurities from a solution by using filter paper is called as

a)

Chromatography

b)

Filtration

c)

Sublimation

d)

Solution

58.

When two liquids do not mix, they form two separate layers and are known as

a)

(a) Miscible liquids

b)

(b) Immiscible liquids

c)

(c) Saturated liquids

d)

(d) Super saturated liquids

59.

How one can separate ammonium chloride from a mixture containing ammonium chloride and sodium chloride?

a)

(a) Precipitation

b)

(b) Sublimation

c)

(c) Chromatography

d)

(d) Cetrifugation

60.

Tyndall effect means

a)

Rays scattered by dust particles

b)

Rays travelling from one medium to other

c)

Rays undergoing Refraction

d)

Rays undergoing totally reflected

61.

The size of the particle of solute is ............ for colloidal Solution

a)

<1nm

b)

>1nm

c)

Between 1nm and 100nm

d)

Above 100 nm

62.

Dissolved Sodium chloride can be separated from salt solution by

a)

Chemical process of extraction

b)

Physical process of evaporation

c)

Chemical processes

63.

Mixtures of two or more metals , or metals and non-metals are -------------------

a)

Alloys

b)

Mixtures

c)

Metallic mixture

64.

Brass is a mixture of -------- and -------

a)

Zinc & Magnesium

b)

Zinc & Carbon

c)

Zinc & Copper

65.

Depending upon the nature of the components that form a mixture , we have the following types

a)

Coloured mixture & Colourless mixture

b)

Homogeneous mixture & Heterogeneous mixture

c)

Clear mixture & Unclear mixture

66.

Homogeneous mixtures can be called like this

a)

True solution

b)

Colloids

c)

Suspension

67.

Blood and sea water are

a)

blood is a mixture whereas sea water is a compound

b)

blood is a compound and sea water is a mixture

c)

both mixtures

68.

Define a pure substance?

a)

A pure substance consists of a single type of particles and constant composition.

b)

A pure substance consists of two different types of particles with variable composition

c)

A pure substance consists of many types of particles and different composition

69.

In a sugar solution water is_____ and sugar is_____

a)

water is solute and sugar is solvent

b)

water solute and as well as solvent

c)

water is solvent and sugar is solute

70.

What is meant by chromatography?

a)

The process of separation of volatile and non volatile mixtures is called chromatography.

b)

The process of separation of components of a mixture based on its solubility is called chromatography

c)

The process of separation based on its solubility is called chromatography

71.

The method used in washing machines to squeeze out water from wet clothes

a)

Sublimation

b)

Distillation

c)

Centrifugation

72.

a)

A

b)

B

c)

C

d)

D

73.

a)

A

b)

B

c)

C

d)

D

74.

a)

A

b)

B

c)

C

d)

D

75.

a)

A

b)

B

c)

C

d)

D

76.

a)

A

b)

B

c)

C

d)

D

77.

a)

A

b)

B

c)

C

d)

D

78.

a)

A

b)

B

c)

C

d)

D

79.

a)

A

b)

B

c)

C

d)

D

80.

a)

A

b)

B

c)

C

d)

D

81.

a)

A

b)

B

c)

C

d)

D

82.

a)

A

b)

B

c)

C

d)

D

83.

a)

A

b)

B

c)

C

d)

D

84.

When a saturated solution is heated and more solute is dissolved in it, what is such a solution called?

a)

Supersaturated Solution

b)

Colloidal Solution

c)

Aqueous Solution

d)

Thermo Saturated Solution

85.

_____________ was the first scientist to coin the term element in _____.

a)

Robert Boyle, 1683

b)

Antoine Lavoisier , 1661

c)

Robert Boyle, 1661

d)

Antoine Robert Lavoisier, 1743

86.

_____________ was the first scientist to coin the term element in _____.

a)

Robert Boyle, 1683

b)

Antoine Lavoisier , 1661

c)

Robert Boyle, 1661

d)

Antoine Robert Lavoisier, 1743

87.

Which method do we use to separate two miscible liquids?

a)

Centrifugation

b)

Evaporation

c)

Distillation

d)

Separating Funnel

88.

Which of the following is an example of heterogeneous substance?

a)

Bottled water.

b)

Table salt.

c)

Pieces of copper.

d)

Candle.

89.

Which of the following is an example of homogeneous substance?

a)

Granite.

b)

Copper sulphate.

c)

m&m candy.

d)

Muddy water.

90.

What is the solute in the soda water?

a)

Water

b)

Carbon dioxide

c)

Sugar

d)

Oxygen

91.

how will you seperate oxygen from a mixture of liquid air?

a)

centrifugation

b)

seperating funnel

c)

fractional distillation

d)

distillation

92.

Tyndall effect is observed in forests because of

a)

tress

b)

high oxygen level

c)

mist and dust particles in the air

d)

less sunlight

93.

Tyndall effect is observed in forests because of

a)

tress

b)

high oxygen level

c)

mist and dust particles in the air

d)

less sunlight

94.

Rusting of an article made up of iron is called

a)

(a) corrosion and it is a physical as well as chemical change

b)

(b) dissolution and it is a physical change

c)

(c) corrosion and it is a chemical change

d)

(d) dissolution and it is a chemical change

95.

When the liquid is spun rapidly, the denser particles are forced to the bottom and the lighter particles stay at the top. This principle is used in:

a)

(a) Centrifugation

b)

(b) Fractional distillation

c)

(c) Evaporation

d)

(d) Tunneling

96.

If we put camphor in an open container, its amount keeps on decreasing due to the phenomenon of

a)

(a) Evaporation

b)

(b) Precipitation

c)

(c) Condensation

d)

(d) Sublimation

97.

which of the following is a mixture?

a)

air

b)

ice

c)

hydrochloric acid

d)

mercury

98.

Tick the COMPOUNDS.

a)

SOAP

b)

METHANE

c)

CALCIUM CARBONATE

d)

SILICON

e)

TIN

99.

CORRECT THE SENTANCE:

"A SUBSTANCE IS AN IMPURE FORM OF MATTER"

(a)  

100.

WRITE ONLY THE NAME OF THE PROCESS:

BUTTER FROM CURD

(a)  

Similar Resources on Wayground

Tabla de Valencias

100 questions

Tabla de Valencias

quiz

Worksheet

•

6th - 10th Grade

Chemistry Final Review

103 questions

Chemistry Final Review

quiz

Worksheet

•

9th Grade

Most Missed/Difficult Chemistry Regents Questions

98 questions

Most Missed/Difficult Chemistry Regents Questions

quiz

Worksheet

•

9th - 12th Grade

Chemistry Review Quiz Ch1-Ch2a

100 questions

Chemistry Review Quiz Ch1-Ch2a

quiz

Worksheet

•

9th Grade - University

Unit 2: the Science of Chemistry

95 questions

Unit 2: the Science of Chemistry

quiz

Worksheet

•

9th - 12th Grade

Fall Final Exam Review 24-25

100 questions

Fall Final Exam Review 24-25

quiz

Worksheet

•

9th - 12th Grade

Retos Matemáticos

95 questions

Retos Matemáticos

quiz

Worksheet

•

8th - 9th Grade