Chemistry Paper 2

Question 1

What is a closed system?

Answer 1

No substance was leave or enter

Question 2

What is a fuel?

Answer 2

Something burned to release heat

Question 3

How is crude oil formed?

Answer 3

Fossil remains of plankton formed over million of years

Question 4

What is a property of long-chain hydrocarbons?

Answer 4

Vicious

Question 5

What is a saturated hydrocarbon?

Answer 5

Molecule that only contains hydrogen and carbon and no double bonds

Question 6

What is the general formula for alkanes?

Answer 6

CnH2n+2

Question 7

What bonds are found in alkanes?

Answer 7

Single covalent

Question 8

Formula of propane

Answer 8

C3H8

Question 9

Formula of butane

Answer 9

C4H10

Question 10

One use of LPG

Answer 10

Heating

Question 11

Unsaturated hydrocarbon example

Answer 11

C2H4

Question 12

Formula of propane?

Answer 12

C3H6

Question 13

What would happen if bromine was present?

Answer 13

Orange/brown to colourless

Question 14

What two functional groups are in amino acids?

Answer 14

Anime and carboxylic acids

Question 15

What catalyst is used in fermentation?

Answer 15

Yeast

Question 16

What is a diol?

Answer 16

Alcohol with two hydroxyl groups

Question 17

Catalyst used in ammonia

Answer 17

Iron

Question 18

Why do manufacturers want to increase rate of reactions

Answer 18

Reduce energy costs

Question 19

How do catalysts work

Answer 19

Add surface area for molecule to attach to

Question 20

One use of diesal

Answer 20

Fuel for cars

Question 21

Property of short-chain hydrocarbons

Answer 21

Gases or volatile liquids

Question 22

Unsaturated meaning

Answer 22

Contains double bonds

Question 23

Test to identity alkane from Allene

Answer 23

Add bromine water
Alkanes-colourless
Alkanes-no reaction

Question 24

Catalyst used to form alkane molecules

Answer 24

Nickel

Question 25

What compound is CH3CH2CH2OH

Answer 25

Alcohol

Question 26

What is a dicarboxylic acid?

Answer 26

Molecule with 2 carboyxlic acid groups

Question 27

What is the functional group of CH3CH2COOH

Answer 27

COOH

Question 28

What is the pH of a COOH

Answer 28

Less than 7

Question 29

Use of thermosetting

Answer 29

Cooking utensils

Question 30

Why does thermosetting not soften when heated

Answer 30

Cross links between polymer chains

Question 31

What does pure mean

Answer 31

One type of element/compound

Question 32

Melts at 34 is it pure

Answer 32

Yes only has one melting point

Question 33

Disadvantages of flame test

Answer 33

Some colours may mask others in compound

Question 34

Why is no Rome wire used

Answer 34

Doesn’t melt

Question 35

What planet has similar atmosphere to Earth before

Answer 35

Venus

Question 36

What does CCS stand for

Answer 36

Carbon capture and storage

Question 37

What does CCS do

Answer 37

Stops CO2 going into air

Question 38

What does carbon neutral mean?

Answer 38

No overall increase in CO2

Question 39

How does climate change affect rainfall

Answer 39

Some increase,some decrease

Question 40

What is fresh water?

Answer 40

Low levels of salt and microorganisms

Question 41

What can sterilise water?

Answer 41

Ozone

Question 42

What’s an ore

Answer 42

Naturally occurring rock containing metal

Question 43

What is smelting

Answer 43

Ore heated with carbon which is more reactive

Question 44

What is bioleaching?

Answer 44

Bacteria used to remove metal from leachapt solution

Question 45

Why is aluminium not protected?

Answer 45

Creates layer of aluminium oxide which protects metal

Question 46

Why is high pressure used?

Answer 46

Higher pressure increases yield

Question 47

Why use fertilisers?

Answer 47

Replace nutrients in soil

Question 48

Why must fertilisers be soluble?

Answer 48

Taken up by roots of plant

Question 49

What is in NPK fertilisers?

Answer 49

Nitrogen Phosphorus Potassium