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UNIT 4_NS_EV

Total questions: 52

Worksheet time: 31mins

Name
Class
Date
1.

What is a mixture?

4 lines
2.

what is a homogeneos mixture?

a)

a mixture you can see the elements

b)

a mixture you can touch.

c)

a mixture you can't see the elements

d)

something that is made up.

3.

what is a heterogeneous mixture?

a)

a mixture that you can't see the elements

b)

a mixture you can see the elements

c)

trailmix

4.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

5.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

6.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

7.

What kind of mixture is shown in the picture?

a)

Homogeneous

b)

Heterogeneous

8.

A

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

9.

B

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

10.

C

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

11.

D

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

12.

E

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

13.

A

a)

Fungi

b)

Bacteria

14.

B, C, D, E

a)

Fungi

b)

Bacteria

15.

Iron & plastic

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

16.

dust & air

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

17.

petrol & water

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

18.

mud & water

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

19.

salt & water

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

20.

ethanol & water

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

21.

metal & rubbish

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

22.

metals from non-magnetic substances

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

23.

separate solids from liquids;

liquids with different densities

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

24.

remove small particles from liquids and solids

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

25.

turn liquid into vapour, leaving other substances in solid form

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

26.

separate liquids with different boiling points

a)

distillation

b)

evaporation

c)

magnetic separation

d)

filtration

e)

decantation

27.

What is combustion?

4 lines
28.

TEA, RAIN, JUICE, MILK

a)

GAS

b)

SOLID

c)

LIQUID

29.

SNOW, CHEESE, SAND, BREAD

a)

GAS

b)

SOLID

c)

LIQUID

30.

SMOKE, FLAME, NITROGEN, CO2, O2

a)

GAS

b)

SOLID

c)

LIQUID

31.

This reaction causes an apple to turn brown

a)

combustion

b)

oxidation

c)

fermentation

32.

Bacteria and fungi produce these

a)

combustion

b)

oxidation

c)

fermentation

33.

Fuel: wood, petrol, natural gas

a)

combustion

b)

oxidation

c)

fermentation

34.

Fungi- Yeast: Bread

a)

combustion

b)

oxidation

c)

fermentation

35.

Burning

a)

combustion

b)

oxidation

c)

fermentation

36.

Produce energy in light and heat

a)

combustion

b)

oxidation

c)

fermentation

37.

Break down organic materials

a)

combustion

b)

oxidation

c)

fermentation

38.

RUST

a)

combustion

b)

oxidation

c)

fermentation

39.

This reaction can cause metal to turn red-brown

a)

combustion

b)

oxidation

c)

fermentation

40.

Lactic acid or bacteria: chorizo, yoghurt, pickles...

a)

combustion

b)

oxidation

c)

fermentation

41.

Waste products like ashes, smoke, C02 and other waste gases

a)

combustion

b)

oxidation

c)

fermentation

42.

WASTE PRODUCTS OF WOOD

a)

C02, other gases, solid particles

b)

smoke, ashes, CO2

c)

C02, other waste gases

43.

WASTE PRODUCTS OF petrol

a)

C02, other gases, solid particles

b)

smoke, ashes, CO2

c)

C02, other waste gases

44.

WASTE PRODUCTS OF natural gas

a)

C02, other gases, solid particles

b)

smoke, ashes, CO2

c)

C02, other waste gases

45.

What happens when a chemical reaction occur?

a)

heat & light

b)

It changes a substance a produce a new one

c)

agents, like heat and 02

d)

when O2 in the air reacts with a fuel like wood, petrol or natural gas

e)

when some metals like iron react with 02 in water or air forming a brown substance called rust

46.

What are chemical reactions caused by?

a)

heat & light

b)

It changes a substance a produce a new one

c)

agents, like heat and 02

d)

when O2 in the air reacts with a fuel like wood, petrol or natural gas

e)

when some metals like iron react with 02 in water or air forming a brown substance called rust

47.

What forms of energy does combustion produce?

a)

heat & light

b)

It changes a substance a produce a new one

c)

agents, like heat and 02

d)

when O2 in the air reacts with a fuel like wood, petrol or natural gas

e)

when some metals like iron react with 02 in water or air forming a brown substance called rust

48.

When does combustion occur?

a)

heat & light

b)

It changes a substance a produce a new one

c)

agents, like heat and 02

d)

when O2 in the air reacts with a fuel like wood, petrol or natural gas

e)

when some metals like iron react with 02 in water or air forming a brown substance called rust

49.

When does oxidation occur?

a)

heat & light

b)

It changes a substance a produce a new one

c)

agents, like heat and 02

d)

when O2 in the air reacts with a fuel like wood, petrol or natural gas

e)

when some metals like iron react with 02 in water or air forming a brown substance called rust

50.

What non-metal substances can oxidise?

a)

microscopic organism like fungi and bacteria

b)

it produces CO2 which makes the dough rise

c)

some foods like apples

d)

when O2 in the air reacts with a fuel like wood, petrol or natural gas

e)

when some metals like iron react with 02 in water or air forming a brown substance called rust

51.

What causes fermentation?

a)

microscopic organism like fungi and bacteria

b)

it produces CO2 which makes the dough rise

c)

some foods like apples

d)

when O2 in the air reacts with a fuel like wood, petrol or natural gas

e)

when some metals like iron react with 02 in water or air forming a brown substance called rust

52.

How does yeast work to make bread?

a)

microscopic organism like fungi and bacteria

b)

it produces CO2 which makes the dough rise

c)

some foods like apples

d)

when O2 in the air reacts with a fuel like wood, petrol or natural gas

e)

when some metals like iron react with 02 in water or air forming a brown substance called rust

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