Paper 1- Unit 3a neutralisation

Question 1

Acid + Alkali –>

Answer 1

Acid + Alkali –> Salt + water

Question 2

Acid + metal oxide –>

Answer 2

Acid + metal oxide –> salt + water

Question 3

Acid + Metal carbonate –>

Answer 3

Acid + Metal carbonate –>salt + water + carbon dioxide

Question 4

Acid + metal –>

Answer 4

Acid + metal –> Salt + Hydrogen

Question 5

Test for hydrogen

Answer 5

lit splint

goes squeeky pop

Question 6

Test for carbon dioxide

Answer 6

Lime water

goes clear to cloudy

due to wht ppt formed

Question 7

Name the ‘surnames’ for the salts formed by the following acids

1) Hydrochloric acid
2) Sulphuric acid
3) Nitric acid
4) Ethanoic acid

Answer 7

Name the ‘surnames’ for the salts formed by the following acids

1) Hydrochloric acid- Chloride
2) Sulphuric acid- Sulphuate
3) Nitric acid- Nitrate
4) Ethanoic acid- Ethanoate

Question 8

Name acids used to form the following salts

1) Chloride
2) Sulphuate
3) Nitrate
4) Ethanoate

Answer 8

Name acids used to form the following salts

1) Hydrochloric acid
2) Sulphuric acid
3) Nitric acid
4) Ethanoic acid

Question 9

What is the pH of a strong acid?

Answer 9

1-2

Question 10

What is the pH of a weak acid?

Answer 10

3-6

Question 11

pH neutral

Answer 11

7

Question 12

What is the pH of a weak alkali?

Answer 12

8-12

Question 13

What is the pH of a strong alkali?

Answer 13

13-14

Question 14

Describe how you prepare a salt from a metal oxide or metal carbonate

Answer 14

1) Add named acid into a conical flask
2) Add excess metal oxide/carbonate till it no longer reacts
3) Filter the excess solid and collect the solution
4) Place the filtered solution into an evaporating basin
5) Heat the solution till it reaches saturation point
6) leave the solution over a few days to allow crystals to form

Question 15

An acid is…

Answer 15

a substance that give H+ ions in water

Question 16

An alkali is…

Answer 16

a substance that give OH- ions in water

Question 17

What is the ionic equation for neutralisation?

Answer 17

H+ + OH- –> H2O

Question 18

Displacement is…

Answer 18

when a more reactive substances

replaces

a less reactive substances in a compound

Question 19

Displacement of iron oxide

Iron Oxide + Carbon ->

Answer 19

Iron Oxide + Carbon -> Iron + Carbon dioxide

Question 20

Displacement of copper

Copper sulphate + iron –>

Answer 20

Copper sulphate + iron –> Iron Sulphate + copper

Question 21

Extraction process for substances more reactive than carbon

Answer 21

Electrolysis

Question 22

What is electrolysis?

Answer 22

Using electricity

To break down

An ionic substance

Question 23

Problem with carbon dioxide

Answer 23

it is a green house gas

it causes global warming

Question 24

Displacement of aluminium oxide

Aluminium oxide + magnesium –>

Answer 24

Aluminium oxide + magnesium –> magnesium oxide + aluminium

Question 25

What is the name of reaction when an acid or alkali reacts to become neutral?

Answer 25

neutralisation

Question 26

Name the salt –> Sulphuric acid + sodium hydroxide

Answer 26

sodium sulphate

Question 27

Name the salt –> hydrochloric acid + copper oxide

Answer 27

copper chloride

Question 28

Name the salt–> Magnesium + nitric acid

Answer 28

magnesium nitrate