@Plants use the nitrogen from fertilizers to make:
Proteins
Carbohydrates
Starch

@Ammonia is manufactured from:
Nitrogen and hydrogen
Chlorine and nitrogen
Oxygen and chlorine

@Nitrogen is used to make Ammonia. The process is called the:
Haber process
Frasch process
Contact process

Approximately how much of the air is composed of nitrogen?
78%
21%
99%

@Ammonia is:
Very soluble
Insoluble
Partially soluble

@Nitrogen is quite often used in the welding and glass making industries. This is because it:
Provides a safe non-reactive atmosphere
Means higher temperatures can be reached
Speeds up the reaction rates

@When hydrogen chloride gas mixes with ammonia gas:
White fumes are formed
There is an explosive reaction
A dense black vapour is formed

@Which one of the following is used as a fertilizer?
Ammonium sulphate
Copper II sulphate
Sodium sulphate

@Nitrogen from the air is needed to make ammonia. The nitrogen is obtained by:
Fractional distillation of the air
Bubbling the air through water
Diffusion of the air

@A piece of moist universal indicator paper is put into ammonia gas. The paper will:
Turn blue
Turn red
Turn green

@The diagram shows three possible ways a nitrogen molecule in the air might look. Which one is correct?
#mols
Molecule 1
Molecule 2
Molecule 3

