Gas which is colourless and has a strong smell that dissolves into water to cause a greatly alkaline solution.

Synthesizing ammonia from hydrogen gas and nitrogen gas.

Any substance that is consumed or used up during the reaction.

Known as the symbol N in the periodic table, an unreactive gas which makes up around 78 percent of the atmosphere on Earth.

Substance which is natural or chemical that can be added to land or soil to increase fertility.