Unit 2 Topic 8 Non Metals Flashcards Preview

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Flashcards in Unit 2 Topic 8 Non Metals Deck (44):
1

What is a clean fuel? Give example?

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

2

Give 2 benefits of using hydrogen as fuel?

Clean fuel
Can be used in fuel cells

3

Give 2 disadvantages of using hydrogen as fuel?

Extremely flammable
Hydrogen must be manufactured

4

2 uses of hydrogen?

Rocket fuel
Weather balloons

5

Give 2 uses of carbon dioxide?

Fizzy drinks
Fire extinguishers

6

Give 3 physical properties of carbon dioxide?

Colourless
Odourless
Low solubility

7

Chemical formula for carbonic acid?

H2CO3

8

Give 2 uses of nitrogen?

Can be used in fertiliser
Coolant

9

Give 3 physical properties of nitrogen?

Colourless
Odourless
Insoluble

10

Give 3 physical properties of oxygen?

Colourless
Odourless
Slightly soluble

11

Give 2 uses of oxygen?

Combustion
Respiration

12

How is oxygen prepared?

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

13

Give 3 physical properties of ammonia?

Colourless
Characteristic
Very soluble

14

Give formula of Ammonia?

NH3

15

2 advantages of using nitrogen in fertilisers?

Greater nitrogen uptake by plant
Increase crop yield

16

2 disadvantages of using nitrogen in fertilisers?

May get in waterways, which causes eutrophication
Can cause stomach cancer if it gets in drinking water

17

What chemical can be used to test for cations?

Aqueous Ammonia

18

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

White, no

19

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

Pale blue, yes ( dark blue solution )

20

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

White, no

21

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

Green, no

22

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

Red/brown, no

23

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

White, yes ( colourless solution )

24

How is ammonia produced?

Haber Process

25

Give 2 reactants in Haber Process?

Nitrogen
Hydrogen

26

What temperature is Haber process carried out at?

450°C

27

What pressure is Haber Process carried out at?

200atm

28

What catalyst is used in Haber Process?

Iron

29

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

----->

30

Give 3 allotropes of sulfur?

Rhombic sulfur
Monoclinic sulfur
Plastic sulfur

31

Give 3 physical properties of sulfur dioxide?

Yellow gas
Pungent smell
Soluble

32

What is produced when sulfur dioxide reacts with water?

Sulphurous acid
H2SO3
Weaker than sulphuric acid

33

Give effect of acid rain on trees?

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

34

Give effect of acid rain on waterways?

Water becomes acidic, most fish cannot live in acidic water

35

Give effect of acid rain on buildings?

Reacts with calcium carbonate in limestone which corrodes buildings

36

Give 3 measures to reduce acid rain?

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

37

What process produces Sulphuric Acid?

Contact Process

38

Give the 4 stages of the Contact Process?

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

39

What does Stage 2 of Contact Process involve?

Sulfur dioxide is mixed with more air

40

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

450°C
2atm
Vanadium Oxide

41

What does Stage 3 of Contact Process involve?

Sulfur trioxide dissolved in concentrated sulphuric acid to form Oleum

H2S2O7

42

What does stage 4 of Contact Process involve?

Oleum mixed with water to produce Sulphuric Acid

43

Give a use of sulphuric acid?

Dehydrating agent

44

3 physical properties of Hydrogen?

Colourless
Odourless
Insoluble in water