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Unit 3 Chemistry > Fertiliser > Flashcards

Flashcards in Fertiliser Deck (11)
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1

What are the three elements in essential nutrient compounds

Nitrogen (N)
Phosphorus
Potassium

2

What happens when plants grow?

Roots take up extra nutrients from the soil level of nutrients, present decreases

3

What do different plants require?

Different levels of nutrient

4

What are the different types of fertilisers

Natural and synthetic

5

What can natural and synthetic fertilisers deliver?

Essential nutrients to the soil

6

What can happen to soluble fertilisers in condaft with rainwater

can be washed away into rivers and pollution occurs result in fish dying

7

What is the haber process?

Making ammonia from nitrogen and hydrogen

8

What is the ostwald process?

oxidising ammonia to make nitric acid

9

Conditions ammonia has to be in

Moderate temp
High pressure
Fe speeds it up
Ammonia to liquid, easier to extract
Nitrogen and hydrogen are returned to the reaction saving money

10

What is nitric acid used to make?

ammonium nitrate

11

How is nitrate fertilizers made ?

neutralisation reaction