A white ring of solid ammonium chloride forms where the two gases meet inside the tube. If necessary, protect non-glass surfaces of an overhead projector with clear plastic. Dip one Q-tip into ...

Ammonium nitrate is commonly used as an agricultural fertiliser, but is also potentially explosive. Its presence in the waters off the busy city of Abidjan - home to more than six million people ...

Nitrogen-based fertilizers, such as urea, ammonium nitrate ... Potassium-based fertilizers, such as potassium chloride and ...