U3-3-1 - Fertiliser Production

Question 1

3 elements essential to plants

Answer 1

P, N, K

(phosphorus, nitrogen potassium)

Question 2

Which two properties must a fertiliser have?

Answer 2

1. Soluble in water
2. Contains one or more of P, N, K

Question 3

What type of reactions make synthetic fertilisers?

Answer 3

Neutralisation reactions

Question 4

What type of compounds are synthetic fertilisers?

Answer 4

Salts

Question 5

A salt solution was made. How can a solid salt sample be produced?

Answer 5

Evaporation

(Boil away the solvent)

Question 6

Formula for ammonia

Answer 6

NH₃

Question 7

Describe the properties of ammonia gas

(smell, hazards, solubility/pH)

Answer 7

Sharp unpleasant smell

Toxic

Dissolves in water to form alkaline solutions