Salts

Question 1

What is the formula for hydrochloric acid?

Answer 1

HCl

Question 2

What is the formula for nitric acids

Answer 2

HNO3

Question 3

What is the formula for sulphuric acid?

Answer 3

H2SO4

Question 4

What is the formula for sodium sulphate?

Answer 4

Na2SO4

Question 5

What is a salt produced by chlorides?

Answer 5

Cl

Question 6

What is a salt produced by nitrates?

Answer 6

NO3

Question 7

What is a salt produced by sulphates?

Answer 7

SO4

Question 8

What happens when you add a metal to an acid?

Answer 8

Salt and hydrogen is produced

Question 9

What happens when you add a metal oxide / hydroxide to an acid?

Answer 9

Salt and water is produced

Question 10

What happens when you mix carbonate and acid?

Answer 10

Salt, water & Carbon Dioxide are produced

Question 11

What metals should not be reacted with an acid to produce a salt?

Answer 11

Highly reactive metals e.g. sodium

Question 12

What is the method used to make soluble salts such as copper sulphate?

Answer 12

Filtration and evaporation techniques

Question 13

What can precipitation reactions be used for?

Answer 13

To make insoluble salts by having 2 dissolved soluble salts react together

Question 14

What is the formula for carbonates?

Answer 14

CO3 (2-)

Question 15

What is the formula for hydroxide?

Answer 15

OH (1-)

Question 16

What is the formula for sulfate?

Answer 16

SO4 (2-)

Question 17

What is the formula for ammonium?

Answer 17

NH4 (1+)

Question 18

What is the formula for nitrate?

Answer 18

NO3 (1-)

Question 19

How can an acid be identified?

Answer 19

If their PH is 7 or they release H+ ions

Question 20

How can a base be identified?

Answer 20

If their PH is 7 or they contain oxides/carbonates

Question 21

How can alkalis be identified?

Answer 21

They contain OH (1-) ions

Question 22

What are the different types of indicators called?

Answer 22

• universal indicator
• litmus paper
• methyl orange
• phenolphthalein

Question 23

What salt does hydrochloric acid form?

Answer 23

Chloride salt

Question 24

What salt does sulphuric acid form?

Answer 24

Sulphate salt

Question 25

What salt does nitric acid form?

Answer 25

Nitrate salt

Question 26

What happens when the base or metal added to an acid when it will no longer react?

Answer 26

The excess base is then filtered off

Question 27

What are the steps to make a pure insoluble salt? (6 marker)

Answer 27

1) Add 2 salts to beaker 2) Stir with glass rod 3) When precipitate forms filter from solution with filter paper 4) Wash precipitated with water 5) Leave in warm to dry 6) Pat dry with filter paper

Question 28

What colour does Lead nitrate and Potassium iodide create after it’s reacted?

Answer 28

Yellow

Question 29

What colour does Silver nitrate and Sodium chloride create after it’s reacted?

Answer 29

White

Question 30

What colour does sodium hydroxide and copper sulfate create after it’s reacted?

Answer 30

Blue

Question 31

What colour does silver nitrate and potassium iodide create after it’s reacted?

Answer 31

Cream

Question 32

What colour does Sodium sulfate and Barium chloride create after it’s reacted?

Answer 32

White

Question 33

What state symbols are involved in the chemical equations for making a precipitate?

Answer 33

Aq + Aq -> S + Aq

Question 34

What are always soluble salts?

Answer 34

- All potassium salts - All ammonium salts - All nitrates - MOST sulphates

Question 35

What are always insoluble salts (precipitates)?

Answer 35

- MOST carbonates - MOST hydroxides - MOST oxides - MOST lead compounds - MOST silver compounds - Barium sulfate

Question 36

What are common bases?

Answer 36

Metal oxides and metal carbonates

Question 37

What are some common salts?

Answer 37

Sulfates, chlorides, nitrates

Question 38

What name is given to the reaction between an acid and a base?

Answer 38

Neutralisation