Fertiliser Flashcards
What are the three elements in essential nutrient compounds
Nitrogen (N)
Phosphorus
Potassium
What happens when plants grow?
Roots take up extra nutrients from the soil level of nutrients, present decreases
What do different plants require?
Different levels of nutrient
What are the different types of fertilisers
Natural and synthetic
What can natural and synthetic fertilisers deliver?
Essential nutrients to the soil
What can happen to soluble fertilisers in condaft with rainwater
can be washed away into rivers and pollution occurs result in fish dying
What is the haber process?
Making ammonia from nitrogen and hydrogen
What is the ostwald process?
oxidising ammonia to make nitric acid
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
What is nitric acid used to make?
ammonium nitrate
How is nitrate fertilizers made ?
neutralisation reaction
