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Pit houses were typical dwellings in the Arpad era.
A circular, domed, portable tent covered by felt, typically used by nomadic peoples.
A tertiary amine with a characteristic unpleasant odour, occurring in spoiled food.
The simplest conjugated diene.
As a milestone in the history of aviation, Oszkár Asboth´s first helicopter made its first flight in 1928.
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 open-chain version of ribose, which occurs naturally in nucleic acids, coenzymes, nucleotides and nucleosides.
An organic compound in the urine of mammals, used in the production of fertilisers as a source of nitrogen.
A yellow-green toxic gas with a strong odour, one of the halogens.
Sulphur dioxide emission is the main cause of acid rains. It is an intermediate product in the production of sulphuric acid.
The molecule has two enantiomers: stereoisomers that are mirror images of each other and are not superimposable.
The simplest primary amine.
A solid, grey substance which sublimates when heated. Its solution in alcohol is called tincture of iodine, it is a disinfectant.
One of the hydrogen halides, a highly aggressive substance - it even attacks glass.
A white, odourless crystalline compound.
The animation helps to develop space perception and navigation in space using space coordinates.
The Avars established a stable empire in the Carpathian Basin between the 6th-8th centuries.
One of the isomers of pentene.
Benzene is the simplest aromatic hydrocarbon.