Unit 2 Topic 8 Non Metals

Question 1

What is a clean fuel? Give example?

Answer 1

A fuel that doesn’t produce toxic or polluting products, like hydrogen

Question 2

Give 2 benefits of using hydrogen as fuel?

Answer 2

Clean fuel

Can be used in fuel cells

Question 3

Give 2 disadvantages of using hydrogen as fuel?

Answer 3

Extremely flammable

Hydrogen must be manufactured

Question 4

2 uses of hydrogen?

Answer 4

Rocket fuel

Weather balloons

Question 5

Give 2 uses of carbon dioxide?

Answer 5

Fizzy drinks

Fire extinguishers

Question 6

Give 3 physical properties of carbon dioxide?

Answer 6

Colourless
Odourless
Low solubility

Question 7

Chemical formula for carbonic acid?

Answer 7

H2CO3

Question 8

Give 2 uses of nitrogen?

Answer 8

Can be used in fertiliser

Coolant

Question 9

Give 3 physical properties of nitrogen?

Answer 9

Colourless
Odourless
Insoluble

Question 10

Give 3 physical properties of oxygen?

Answer 10

Colourless
Odourless
Slightly soluble

Question 11

Give 2 uses of oxygen?

Answer 11

Combustion

Respiration

Question 12

How is oxygen prepared?

Answer 12

Place catalyst Manganese Dioxide in Hydrogen Peroxide and this speeds up decomposition of Hydrogen Peroxide and produces oxygen

Question 13

Give 3 physical properties of ammonia?

Answer 13

Colourless
Characteristic
Very soluble

Question 14

Give formula of Ammonia?

Answer 14

NH3

Question 15

2 advantages of using nitrogen in fertilisers?

Answer 15

Greater nitrogen uptake by plant

Increase crop yield

Question 16

2 disadvantages of using nitrogen in fertilisers?

Answer 16

May get in waterways, which causes eutrophication

Can cause stomach cancer if it gets in drinking water

Question 17

What chemical can be used to test for cations?

Answer 17

Aqueous Ammonia

Question 18

Colour of magnesium precipitate when ammonia added? Soluble in excess?

Answer 18

White, no

Question 19

Colour of copper precipitate when ammonia added? Soluble in excess?

Answer 19

Pale blue, yes ( dark blue solution )

Question 20

Colour of aluminium precipitate when ammonia added? Soluble in excess?

Answer 20

White, no

Question 21

Colour of iron (II) precipitate when ammonia added? Soluble in excess?

Answer 21

Green, no

Question 22

Colour of iron (III) precipitate when ammonia added? Soluble in excess?

Answer 22

Red/brown, no

Question 23

Colour of zinc precipitate when ammonia added? Soluble in excess?

Answer 23

White, yes ( colourless solution )

Question 24

How is ammonia produced?

Answer 24

Haber Process

Question 25

Give 2 reactants in Haber Process?

Answer 25

Nitrogen | Hydrogen

Question 26

What temperature is Haber process carried out at?

Answer 26

450°C

Question 27

What pressure is Haber Process carried out at?

Answer 27

200atm

Question 28

What catalyst is used in Haber Process?

Answer 28

Iron

Question 29

What do use instead of an arrow when writing the equation for the Haber Process? Why?

Answer 29

----->

Question 30

Give 3 allotropes of sulfur?

Answer 30

Rhombic sulfur Monoclinic sulfur Plastic sulfur

Question 31

Give 3 physical properties of sulfur dioxide?

Answer 31

Yellow gas Pungent smell Soluble

Question 32

What is produced when sulfur dioxide reacts with water?

Answer 32

Sulphurous acid H2SO3 Weaker than sulphuric acid

Question 33

Give effect of acid rain on trees?

Answer 33

Harms leaves and makes it harder for plant to produce glucose through photosynthesis

Question 34

Give effect of acid rain on waterways?

Answer 34

Water becomes acidic, most fish cannot live in acidic water

Question 35

Give effect of acid rain on buildings?

Answer 35

Reacts with calcium carbonate in limestone which corrodes buildings

Question 36

Give 3 measures to reduce acid rain?

Answer 36

Burn less fossil fuel Remove sulfur from fossil fuels Remove acidic gases from combustion products

Question 37

What process produces Sulphuric Acid?

Answer 37

Contact Process

Question 38

Give the 4 stages of the Contact Process?

Answer 38

- 1. Combustion of sulfur - 2. Catalytic production of sulfur trioxide - 3. Absorption in concentrated sulphuric acid - 4. Dilution of oleum

Question 39

What does Stage 2 of Contact Process involve?

Answer 39

Sulfur dioxide is mixed with more air

Question 40

What temperature, pressure, and catalyst is used in Stage 2 of Contact Process?

Answer 40

450°C 2atm Vanadium Oxide

Question 41

What does Stage 3 of Contact Process involve?

Answer 41

Sulfur trioxide dissolved in concentrated sulphuric acid to form Oleum H2S2O7

Question 42

What does stage 4 of Contact Process involve?

Answer 42

Oleum mixed with water to produce Sulphuric Acid

Question 43

Give a use of sulphuric acid?

Answer 43

Dehydrating agent

Question 44

3 physical properties of Hydrogen?

Answer 44

Colourless Odourless Insoluble in water