Arginine

One of the twenty protein-building amino acids.

2-methylbutane (C₅H₁₂)

One of the isomers of pentane, used as a solvent.

Pent-1-ene (C₅H₁₀)

A liquid with a characteristic unpleasant odour and a low boiling point.

Administrative divisions of Hungary

This animation presents the regions, counties and cities of Hungary.

2,2 dimethylpropane (C₅H₁₂)

Colourless, odourless gas used as a standard in NMR spectroscopy.

Silicon

A crystalline substance, an extremely important material in the electronics industry ...

Hydrogen peroxide (H₂O₂)

The compound of hydrogen and oxygen. Colourless, odourless liquid; heavier than water.

Dimethylamine (NH(CH₃)₂)

A colourless gas with a pungent odour. It is widely used in industry.

Ethene (ethylene) (C₂H₄)

The first member in the homologous series of 1-alkenes.

Ethyne (acetylene) (C₂H₂)

The first member of the homologous series of alkyne hydrocarbons.

Nitrogen-dioxide (NO₂)

A reddish-brown toxic gas, very reactive due to its unpaired electron.

Sulphur trioxide (SO₃)

One of the oxides of sulphur, forms sulphuric acid with water.

Hexane (C₆H₁₄)

The sixth member in the homologous series of straight-chain alkanes.

2-deoxy-beta-D-ribose (C₅H₁₀O₄)

A component of DNA, it contains one less hydroxyl group than β-D-ribose.

Hydrogen bromide (HBr)

One of the hydrogen halides, it is used for the production of alkyl bromides.

Aniline (C₆H₅NH₂)

The simplest aromatic amine. Its scientific name is phenylamine.

Hydrogen sulphide (H₂S)

A colourless, toxic gas with the characteristic odour of rotten eggs. It occurs in...

Phosphoric acid (H₃PO₄)

It is also used as a food additive, limescale and rust remover.

National Parks of Hungary

There are ten national parks in Hungary.

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