NPK fertilisers

Question 1

Advantages of formulated fertilisers

-more w… available
-e… to use
-don’t s…

Answer 1

-more widely available
-easier to use
-don’t smell

Question 2

What are the 3 main essential elements in fertilisers

-n…
-p…
-p…

Answer 2

-nitrogen
-phosphorus
-potassium

Question 3

What does increasing the amount of potassium, nitrogen and phosphorus do

Answer 3

Increases the crop yield, making the plants grow faster and bigger

Question 4

Equation word and symbol for ammonium nitrate

Answer 4

Ammonia + nitric acid = ammonium nitrate
NH3 + HNO3 = NH4NO3

Question 5

Where can you get potassium chloride and potassium surface from

Answer 5

Mining

Question 6

Reacting phosphate rock with different acids produces soluble phosphates

-n… acid = p… acid + calcium n…
-s… acid = calcium s… + calcium p…
—>known as a single s…
-p… acid = c… phosphate
—>known as a t… superphosphate

Answer 6

-nitric acid = phosphoric acid + calcium nitrate
-sulfuric acid = calcium sulfate + calcium phosphate
—>known as a single superphosphate
-phosphoric acid = calcium phosphate
—>known as a triple superphosphate