Colourless, toxic liquid with a sweet odour.
An organic compound in the urine of mammals, used in the production of fertilisers as a source of nitrogen.
Cellobiose is the basic structural unit of cellulose.
A compound ion formed when a water molecule releases a proton.
Ammonia is a colourless gas with a characteristic pungent smell. Its solution in water is called ammonium hydroxide or household ammonia.
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 diol.
A colourless, slightly viscous, hygroscopic liquid used in the production of formic acid, hydrogen cyanide and other organic compounds.
Fructose is the sweetest of the simple carbohydrates.
The simplest saturated alcohol. A highly toxic compound, easily confusable with ethanol.
The first member in the homologous series of alkanes.
A white, odourless crystalline compound.
One of the hydrogen halides, a highly aggressive substance - it even attacks glass.
A colourless, heavier-than-air gas, an intermediate in the production of nitric acid.
Synthetic rubber is produced by the polymerisation of isoprene.
A heterocyclic aromatic organic compound, its derivatives include guanine and adenine.
A heterocyclic organic compound.
Used in the production of beryllium and as a catalyst.
A solid, grey substance which sublimates when heated. Its solution in alcohol is called tincture of iodine, it is a disinfectant.
Handball is one of the most popular team sports.