C3

Question 1

Whats quantative data?

Answer 1

Analysis that tells you HOW MUCH is present

Question 2

Chloride test for halide?

Answer 2

Gives a white precipitate of silver chloride

Question 3

Halide test of bromide?

Answer 3

Cream precipitate of silver bromide

Question 4

What halide does and iodide give

Answer 4

Yellow precipitate of silver iodide

Question 5

What does hard water make?

Answer 5

Scum

Question 6

What is hard water caused by?

Answer 6

Magnesium sulfate and calcium carbonate causes water hardness

Question 7

What is an acid based titration?

Answer 7

A neutralisation reaction where hydrogen ions react witb hydroxide ions and form an alkali

Question 8

What does a titration do?

Answer 8

Allow you to find out how much of an acud you need to neutralise an alkali

Question 9

What liquid is electrolysis performed in?

Answer 9

Electrolyte solution

Question 10

What charge are cations?

Answer 10

Posotive

Question 11

What charge are anions

Answer 11

Negative

Question 12

What are two uses of electroplating?

Answer 12

Decoration (e.g jewellery)

Prevention of corrosion

Question 13

What is a reversible reaction?

Answer 13

Where one of the products of reaction can react to make origional product

Question 14

What two products aare needed to produce ammonia

Answer 14

Nitrogen and hydrogen

Question 15

Whats a dynamic equilibrium?

Answer 15

Both reactions take place at same rate in both directions

Question 16

Pros and cons of fermentation

Answer 16

• its renewable

- its expensive to concentrate and purify

Question 17

When are esters formed?

Answer 17

When an alcohol reacts with carnoxylix acid

Question 18

What can esters be used in?

Answer 18

• perfumes

- flavourings and aromas

Question 19

What can polyesters be used in?

Answer 19

• fabrics

- plastics

Question 20

What are soaps made from?

Answer 20

When an ester reacts with an alkali

Question 21

What is qualative data?

Answer 21

Analysis that tells you WHAT is present