Acids, Alkalis And Bases

Question 1

What is a base?

Answer 1

Something with a pH of more than 7

Question 2

What is an alkali?

Answer 2

A substance with a pH of greater than 7 that is water soluble and produces OH- ions in water

Question 3

What is the neutralisation reaction?

Answer 3

Acid+base ===> salt + water

Question 4

What does an acid combined with a metal produce?

Answer 4

A salt and hydrogen

Question 5

Why does copper not react with acids?

Answer 5

Because it is less reactive than hydrogen

Question 6

What is an acid?

Answer 6

Something with a pH of lower than 7, acids produce H+ ions in water

Question 7

What are the chemical formulas for:

> nitric acid

> hydrochloric acid

> sulphuric acid

Answer 7

HNO3

H2SO4

HCL

Question 8

What are the word and symbol equations for the reaction of ammonia with nitric acid?

Answer 8

> ammonia+ nitric acid ===> ammonium nitrate

> NH3+ HNO3===> NH4NO3

Question 9

Why is the neutralisation reaction of ammonia with nitric acid different?

Answer 9

Because no water is produced

Question 10

Why is ammonium nitrate a good fertiliser for plants?

Answer 10

Because it contains nitrogen from two sources, which is needed for making proteins.