Acids and Alkalis

Question 1

What is the PH of an acid?

Answer 1

pH 1 - pH6

Question 2

What are ammonium salts used for?

Answer 2

Fertilisers

Question 3

What does the symbol (aq) stand for?

Answer 3

Aqueous (dissolved in a solution)

Question 4

What ions form when you add acid to water?

Answer 4

H+ ions

Question 5

What salt is made when magnesium reacts with hydrochloric acid?

Answer 5

Magnesium Chloride

Question 6

What are the products of the reaction between an acid and a metal?

Answer 6

Salt and hydrogen

Question 7

What are the products of a reaction between an acid and an alkali?

Answer 7

Salt and water

Question 8

What is the pH of an alkali?

Answer 8

pH 8-14

Question 9

What ions are formed when a base is dissolved in water?

Answer 9

OH- ions

Question 10

What indicator do we use to find the pH of a solution?

Answer 10

Universal indicator

Question 11

What is a precipitate?

Answer 11

An insoluble solid formed in a reaction of two insoluble salts

Question 12

What is the ionic equation for a neutralisation reaction?

Answer 12

H+ + OH- = H2O

Question 13

What gas is produced when a metal reacts with an acid?

Answer 13

Hydrogen

Question 14

What do you need to do to the salt solution to get the solid salt crystals?

Answer 14

Evaporate the water off

Question 15

What do you use to tell when an acid has reacted with an alkali to produce a salt?

Answer 15

An indicator

Question 16

Name 2 ways precipitates can be used?

Answer 16

Remove pollutants and remove unwanted ions from drinking water