Acids and Alkalis

Question 1

What ions do acid form in water?

Answer 1

H+

Question 2

What does a alkali base form in dissolved water?

Answer 2

OH-

Question 3

What is the equation for neutralisation?

Answer 3

Acid + base –> salt + water

Question 4

What is the symbol equation for neutralisation?

Answer 4

H+ + OH- –> H2O

Question 5

What is the state symbol for solids?
For liquids?
For gases?
For dissolved in water?

Answer 5

(s)
(l)
(g)
(aq)

Question 6

What does a metal + acid make?

Answer 6

Salt + hydrogen

In this reaction metals that are more reactive will make a louder noise

Question 7

Hydrochloric acid will produce…?

Answer 7

Chloride salts

Question 8

Sulfuric acid will produce…?

Answer 8

Sulfate salts

Question 9

Acid + metal oxide –> ?

Answer 9

Salt + water

Question 10

Acid + metal hydroxide –> ?

Answer 10

Salt + water

Question 11

What is ammonium nitrate good for?

Answer 11

Fertiliser because it has nitrogen from two sources - the ammonia and nitric acid therefore making it a double dose and plants need nitrogen to make proteins

Question 12

How can you make soluble salts?

Answer 12

Using a metal or an insoluble base

Question 13

How else could you make soluble salts?

Answer 13

Use an alkali

Question 14

How could you make insoluble salts?

Answer 14

Precipitation reaction - pick two solutions that contain the ions you need, then filter it, wash it, dry it on filter paper

Question 15

What else can precipitation reactions be used for?

Answer 15

Remove poisonous ions from drinking water - calcium and magnesium