PAPER 2 - LAST MIN STUFF

Question 1

Describe how the student can make small and medium sized marble chips from large chips

Answer 1

Question 2

Explain, in terms of particles, why the rate of reaction between the ribbon and dilute acid slows as the reaction takes place

Answer 2

Question 3

Why the rate of reaction increased when the temperature was increased

Answer 3

Question 4

Describe how monomers form a polymer

Answer 4

Question 5

Bromine water test

Answer 5

Alkenes –> colourless
Alkanes –> REMAIN orange

Question 6

Explain why ethene is an unsaturated hydrocarbon

Answer 6

Question 7

Explain why the test for a given ion must be unique to that ion

Answer 7

Question 8

What colour is the METAL ION Iron(II)?

Answer 8

Green

Question 9

What colour is the METAL ION Iron(III)?

Answer 9

Brown

Question 10

What colour is the METAL ION Copper?

Answer 10

Blue

Question 11

What colour is the METAL ION Calcium?

Answer 11

White

Question 12

What colour is the METAL ION Aluminium?

Answer 12

White

Question 13

What colour is the HALIDE ION Chloride?

Answer 13

White

Question 14

What colour is the HALIDE ION Bromide?

Answer 14

Cream

Question 15

What colour is the HALIDE ION Iodine?

Answer 15

Yellow

Question 16

Give a reason why instrumental analysis may be better than other methods of analysis

Answer 16

Improved accuracy

Question 17

How to distinguish between aluminium ions and calcium ions?

Answer 17

Question 18

Describe the test to show the gas is ammonia

Answer 18

Question 19

Describe how to do a flame test

Answer 19

Question 20

Give the name of the most common gas in the Earth’s early atmosphere

Answer 20

Co2

Question 21

Clay ceramic properties

Answer 21

• DOES NOT REACT WITH WATER
  *

Question 22

Size of nanoparticle?

Answer 22

• Few hundred atoms
• 1 × 10–7 metres (100 nano)

Question 23

Why are nanoparticles used in sunscreens

Answer 23

Question 24

Risk of nanoparticles?

Answer 24

Question 25

Nanoparticles radius?

Answer 25

50 nm

Question 26

Polymer advantages

Answer 26

Question 27

poly(**ethene**) uses:

Answer 27

* Plastic bags

Question 28

poly(**chloroethene**) uses:

Answer 28

* Window frames

Question 29

poly(**tetraflouroethene**) uses:

Answer 29

* Non stick coating on pans

Question 30

Problems with **manufacture** of **polymers**

Answer 30

* Crude oil is finite & Raw material * Greenhouse gases

Question 31

Problems with **disposal** of **polymers**

Answer 31

* Non-biodegradable * Global warming * Some are recycled

Question 32

Problems with **recycling** of **polymers**

Answer 32

Question 33

Explain why chlorine is more reactive than iodine

Answer 33

Question 34

Explain why graphene will be a good conductor of an electric current

Answer 34