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Worksheets

Science grade 6

Total questions: 48

Worksheet time: 32mins

Name
Class
Date
1.

Two or more items that are mixed together is called

a)

A mixture

b)

A Sieve

c)

Compost

d)

Solvent

2.

1. Which is not belong to group

a)

Decantation

b)

Sieving

c)

Precipitation

d)

Filtration

3.

How to separate pebbles and water?

a)

Decantation

b)

Filtration

c)

Evaporation

d)

Sieving

4.

How to separate salt and water?

a)

Decantation

b)

Filtration

c)

Evaporation

d)

Sieving

5.

How to separate cooked noodles and water?

a)

Decantation

b)

Filtration

c)

Evaporation

d)

Sieving

6.

How to separate meat and sauce?

a)

Decantation

b)

Filtration

c)

Evaporation

d)

Sieivng

7.

How to separate oil and water?

a)

Decantation

b)

Distillation

c)

Magnetic Attraction

d)

Sieving

8.

How to separate sugar and water?

a)

Decantation

b)

Distillation

c)

Filtration

d)

Evaporation

9.

How to separate tea leaves and tea liquid?

a)

Decantation

b)

Evaporation

c)

Sieving

d)

Magnetic Attraction

10.

How to separate coffee beans and coffee liquid?

a)

Distillation

b)

Filtration

c)

Evaporation

d)

Sieving

11.

Which of the following is a benefit of separating mixtures?

a)

Woods

b)

Water

c)

Essential Oils

d)

Plants

12.
Filtration is a common method of separating an insoluble solid from a liquid. An example of a mixture is sand and water. This process involves the use of a filter paper placed in a filter funnel. The funnel is placed in a beaker and the mixture of water and sand is poured into the funnel. The liquid part drains through the filter paper into the beaker, leaving the solid sand particles trapped on the filter.
Filtration is a common method of separating an insoluble solid from a liquid.
True or False?
a)
True
b)
False
13.
In filtration, the liquid part collected is called the filtrate and the solid bit that remained on the filter paper is called the residue.
 In filtration, what is the part that remains in the filter paper called?
a)
Solid
b)
filtrate
c)
remainder
d)
residue
14.
Evaporation is good for separating a mixture (solution) of a soluble solid and a solvent. The process involves heating the solution until the solvent evaporates (turns into gas) leaving behind the solid residue.
Evaporation is good for separating a mixture (solution) of a soluble solid and a solvent.
True or False?
a)
False
b)
True
15.
To remove the salt from salt water, the easiest thing to do is boil it and evaporate the water.
a)
True
b)
False
16.
Distillation uses two changes of state. what are they?
a)
Evaporation and condensation
b)
Evaporation and freezing
c)
melting and boiling
d)
sublimation and condensation
17.

Name the separation technique shown in the diagram.

a)

evaporation

b)

distillation

c)

filtration

18.
To separate a mixture of soil and water what separation method is used?
a)
Filtration
b)
Distillation
c)
Chromatography
d)
Evaporation
19.

This method is used to separate metals from non metals.

a)

use of magnet

b)

physical manipulation

c)

sieving

d)

chromatography

20.

What mixture could you use this tool to best separate that mixture?

a)

Sugar and Salt

b)

Sand and rocks

c)

Apples and grapes

21.

How to separate needles and toothpicks?

a)

Decantation

b)

Distillation

c)

Magnetic Attraction

d)

Sieving

22.

Chemical changes...

a)

Always form a new substance.

b)

May change shape or size.

c)

May absorb or release heat.

d)

May change colour, produce odor, create sound, release gas or produce light.

e)

Can often be undone.

23.

Physical Changes...

a)

Do not form a new substance.

b)

May change shape or size.

c)

May absorb or release heat.

d)

May change state of matter.

e)

Can often be undone.

24.

Leaves in autumn undergo a chemical change.

a)

TRUE

b)

FALSE

25.

Fireworks exploding in the sky undergo a physical change.

a)

TRUE

b)

FALSE

26.

Choose the answers that respond to a physical change.

a)

Burning wood.

b)

Chopping wood.

c)

Melting ice.

d)

Rotten bananas.

27.

Choose the answers that respond to a chemical change.

a)

Fireworks.

b)

Cutting fabric to make a dress.

c)

Making a cake.

d)

Chopping onions.

28.

Mixing and dissolving are examples of reversible change.

a)

TRUE

b)

FALSE

29.

Rusting is an irreversible change.

a)

TRUE

b)

FALSE

30.

Tick the three main things you need to start a fire.

a)

An extinguisher.

b)

A fuel.

c)

Oxygen.

d)

Ignition.

31.

When talking about fire extinguishers, the acronym PASS means...

a)

Pass - Aim - Sweep - See

b)

Push - Aid - Spray - See

c)

Pull - Aim - Spray - Sweep

32.

Is melting a reversible change?

a)

Yes

b)

No

33.

Which of the following is an IRREVERSIBLE change?

a)

Freezing

b)

Burning

c)

Condensing

d)

Evaporating

34.

True or false: Dissolving is a reversible change. The solid (solute) and liquid (solvent) can be separated.

a)

TRUE

b)

FALSE

35.

Which of these are irreversible changes?

a)

Salt dissolved in water.

b)

Plaster of Paris dissolved in water.

c)

Wood that has been burnt.

d)

An egg that has been boiled.

36.

Which of these changes are reversible?

a)

Sand mixed in water.

b)

Rice mixed in sand.

c)

potato that has been baked.

d)

An effervescent tablet (e.g. Alka-Seltzer®) dissolved in water.

37.

Which description best describes what happens when a material is burnt?

a)

The process is reversible.

b)

The process is irreversible: the original material is destroyed to

produce new

c)

The material being burnt disappears.

d)

The material being burnt always turns completely into a

gas.

38.
Which of these is NOT a reversible change?
a)
Water to Ice
b)
Juice to Popsicle
c)
Cookie Dough to Cookie
d)
Melting Chocolate
39.
Which is not a property of matter?
a)
solid
b)
liquid
c)
gas
d)
ice
40.
A popsicle is a.....
a)
gas
b)
liquid
c)
solid
41.

Which of these are examples of how materials can change? (Select all that apply)

a)

State

b)

Colour

c)

Shape

d)

Bubble

e)

Name

42.

When ice melts, this is an example of a material changing...

a)

State

b)

Colour

c)

Shape

d)

Bubble

43.

Which of the following is an example of material changing shape?

a)

Mixing salt in water

b)

Snapping a stick

c)

Mixing vinegar and baking powder

d)

Bleaching material

44.

We can mix salt or sugar in water. This is an example of which type of change?

a)

State

b)

Colour

c)

Shape

d)

Bubble

e)

Dissolve

45.

When a material can change states and then change back again we say that is process is....

a)

Irreversible

b)

Reversible

c)

Changing

d)

Permanent

46.

When a material changes states and then can't change back again we say that this process is....

a)

Irreversible

b)

Reversible

c)

Changing

d)

Temporary

47.

When we snap a stick it is an example of a change in shape. This change is ...

a)

Reversible

b)

Irreversible

c)

An accident

d)

Fixable

48.

When applying bleach to fabric the change is an example of a change in state.

a)

True

b)

False

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