U3-1 - Fertilisers Flashcards
1
Q
3 elements essential to plants
A
P, N, K
(phosphorus, nitrogen potassium)
2
Q
Which two properties must a fertiliser have?
A
- Soluble in water
- Contains one or more of P, N, K
3
Q
Example of a natural fertiliser
A
Manure, compost, etc
4
Q
What type of reactions make synthetic fertilisers?
A
Neutralisation reactions
5
Q
What type of compounds are synthetic fertilisers?
A
Salts
6
Q
Name the process caused by synthetic fertiliser use which is harmful for the environment
A
Eutrophication
7
Q
Briefly explain eutrophication
A
Synthetic fertiliser run off causes algal bloom in rivers and lakes, which is harmful to aquatic life.
8
Q
A salt solution was made. How can a solid salt sample be produced?
A
Evaporation
(Boil away the solvent)
