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A yellow-green toxic gas with a strong odour, one of the halogens.
A colourless gas with a pungent odour, its solution in water is called hydrochloric acid.
Water is a very stable compound of hydrogen and oxygen, vital for all known forms of...
Decomposition of ammonium dichromate by heating.
A colourless, viscous liquid, a highly corrosive, strong acid used in several...
Colourless, moderate acid, only known in aqueous solution.
One of the allotropes of phosphorus.
Colourless, odourless gas, highly toxic to humans and animals in high concentration.