A compound ion, the main source of nitrogen for plants.
The second member in the homologous series of straight-chain alkanes.
A compound ion formed when a phosphoric acid molecule releases a proton.
Water is a very stable compound of hydrogen and oxygen, vital for all known forms of life. In nature it occurs in liquid, solid and gaseous state.
The simplest peptide, formed from two glycine molecules by a peptide bond.
A triol that is often used as an ingredient of creams and ointments.
The best known alcohol, important in the food industry.
Colourless, heavier-than-air gas with a pungent odour. It forms white fumes in moist air.
The simplest dicarboxylic acid.
The third member in the homologous series of straight-chain alkanes.
A disaccharide formed by the joining of two alpha-D-glucose molecules.
The lightest halogen, a pale yellow-green, toxic gas, extremely reactive. Its best known compound is teflon.
A crystalline compound found in nucleic acids, coenzymes, nucleotides and nucleosides.
A colourless liquid, easily solved by organic solvents but not by water.
One of the halogens, it may cause skin irritation.
The simplest diol.
Ammonia is a colourless gas with a characteristic pungent smell. Its solution in water is called ammonium hydroxide or household ammonia.
A compound ion generated when a proton is added to an ammonia molecule.
A tertiary amine with a characteristic unpleasant odour, occurring in spoiled food.
A heterocyclic organic compound.