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Nature of matter

Total questions: 50

Worksheet time: 50mins

Name
Class
Date
1.

which of the following is a mixture?

a)

air

b)

ice

c)

hydrochloric acid

d)

mercury

2.

Tick the COMPOUNDS.

a)

SOAP

b)

METHANE

c)

CALCIUM CARBONATE

d)

SILICON

e)

TIN

3.

WHICH ONE IS A MIXTURE?

a)

BLOOD

b)

CARBON DIOXIDE

c)

SILICON

d)

SODIUM

e)

TIN

4.

WHAT IS THE SIZE OF THE PARTICLES OF A SUSPENSION?/

a)

MORE THAN 100nm

b)

less than 1nm

c)

less than 1nm

5.

Which Of The Following Is A PHYSICAL CHANGE

a)

RUSTING OF ALMIRAH

b)

MELTING OF BUTTER IN A PAN

c)

MAKING A FRUIT SALAD WITH RAW FRUITS

d)

BURNING OF PAPER AND WOOD

e)

DISSOLVING COMMON SALT IN WATER

6.

WHICH 2 WILL SHOW THE TYNDALL EFFECT

a)

STARCH SOLUTION

b)

COPPER SULPHATE SOLUTION

c)

MILK

d)

SALT SOLUTION

7.

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

8.

The quantity of matter present in an object is called

a)

weight

b)

Gram

c)

mass

d)

density

9.

What is the solute in the soda water?

a)

Water

b)

Carbon dioxide

c)

Sugar

d)

Oxygen

10.

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

a)

centrifugation

b)

seperating funnel

c)

fractional distillation

d)

distillation

11.

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

a)

evaporatoion

b)

sedimentation

c)

chromatography

d)

filtration

12.

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

13.

. This is a type of heterogeneous mixture in which the particles are dispersed and do not settle out.

a)

alloy

b)

solution

c)

suspension

d)

colloid

14.

Particles size of solution

a)

Less than 1 nm

b)

More than 1 nm

c)

Between 1 and 1000 nm

d)

More than 1000 nm

15.

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.

16.

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

a)

Mixture.

b)

Compound.

c)

Solution.

d)

Colloid.

17.

Which of the following will result in the formation of a mixture?

a)

Crushing of marble tiles into smaller particles.

b)

Breaking ice cubes into smaller pieces.

c)

Adding sodium metal to water.

d)

Adding milk in water.

18.

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.

19.

A mixture will appear translucent in the case of?

a)

Copper sulphate + water.

b)

Alum + water.

c)

Sugar + water.

d)

Starch + water.

20.

Which of the following is not a mixture?

a)

Pure water.

b)

Sea water.

c)

Air.

d)

Brass.

21.

Which of the following is a heterogeneous mixture?

a)

Air.

b)

Brass.

c)

Iodised table salt.

d)

Steel.

22.

Which of the following is an example of heterogeneous substance?

a)

Bottled water.

b)

Table salt.

c)

Pieces of copper.

d)

Candle.

23.

Name the flask

a)

round bottom flask

b)

flat bottom flask

c)

conical flask

24.

NAME THE APPARATUS

a)

DISTILLATOR

b)

CONDENSOR

c)

FRACTIONATING COLUM

25.

NAME THE SEPARATION TECHNIQUE

a)

FRACTIONAL DISTILLATION

b)

DISTILLATION

c)

SEPARATING FUNNEL

d)

EVAPORATION

26.

NAME THE SEPARATION TECHNIQUE DISTILLATION

a)

EVAPORATION

b)

DISTILLATION

c)

CONDENSATION

27.

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

4 lines
28.

Which of the following are also considered to be states of matter?

a)

Plasma

b)

Platelets

c)

BEC (Bose Einstein Condensate)

d)

BHC

29.

One of the following does not undergo sublimation. This one is

a)

Iodine

b)

Camphor

c)

Sodium chloride

d)

Ammonium chloride

30.

When heat is constantly supplied by a gas burner with small flame to melt the ice, then the temperature of the ice during melting

a)

increases very slowly

b)

does not increase at all

c)

first remains constant then increases

d)

increases to form liquid water

31.

When heat is constantly supplied by a burner to boiling water, then the temperature of the water during vaporization

a)

rises very slowly

b)

rises rapidly until the steam is produced

c)

first rises and then becomes constant

d)

does not rise at all

32.

During summer days, water kept in an earthen pot becomes cool because of the phenomenon of

a)

diffusion

b)

transpiration

c)

osmosis

d)

evaporation

33.

Which of the following energy is absorbed during change of state of substance?

a)

Specific heat

b)

Latent heat

c)

Heat capacity

d)

Heat of solution

34.

Which of the following factors are responsible for the change in state of solid carbon dioxide when kept exposed to air? (More than one option is correct)

a)

increase in pressure

b)

increase in temperature

c)

decrease in pressure

d)

decrease in temperature

35.

The evaporation of water increases under the following conditions

a)

increase in temperature, decrease in surface area

b)

increase in surface area, decrease in temperature

c)

increase in surface area, increase in temperature

d)

increase in surface area, increase in temperature, addition of common salt

36.

Which of the following is not an element?

a)

Graphite

b)

Germanium

c)

Silica

d)

Silicon

37.

Which of the following are compounds? (More than one option is true)

a)

CO

b)

NO

c)

No

d)

Co

38.

Which is/ are the example(s) of Solid Sol?

a)

Jelly

b)

Coloured gemstone

c)

Milk

d)

Milky glass

39.

What are the properties of metal?

a)

Malleable

b)

Sonorous

c)

Ductile

d)

Lustre

40.

Who is this person?

a)

Robert Boyle

b)

Antoine Lavoisier

c)

John Tyndall

d)

None of the above

41.

What is Pure substance?

4 lines
42.

Matter is anything that ...........

a)

has mass

b)

has rough surface

c)

occupies space

d)

occupies time

43.

Heat is an example of non-matter because it ..........

a)

doesn't have taste.

b)

doesn't have mass.

c)

doesn't occupy time.

d)

doesn't occupy space.

44.

Matter exists in three different states. They are ..........

a)

solids, liquids and water

b)

thin solids, thick solids and light gases

c)

solids, milk and gases

d)

solids, liquids and gases

45.

Which of the following are examples of solids?

a)

water, sugar and book

b)

sugar, pencil and book

c)

sugar, pencil and helium

d)

pencil, book and toothpaste

46.

Which of the following are examples of liquids?

a)

milk, wood and plastic

b)

milk, water and peanut

c)

milk, water and paint

d)

meat, water and paint

47.

Helium, oxygen and wind are examples of ..........

a)

gases

b)

liquids

c)

solids

d)

none of the above

48.

What are another words for 'definite'?

a)

fixed

b)

stay the same

c)

doesn't change

d)

can flow

49.

Which of the following best describes the particles of solids?

a)

The particles are very close to one another.

b)

The particles cannot slide past each other.

c)

The particles can move freely.

d)

The particles can change shape.

50.

Which of the following best describes the particles of liquids?

a)

The particles are very close to one another.

b)

The particles cannot slide past each other.

c)

The particles can slide past each other.

d)

The particles are quite close to one another.

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