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Common salt (or table salt) is one of the most important sodium compounds, indispensable for living organisms.
A white, crystalline compound which breaks down when exposed to light.
Halogen elements are a group in the periodic table consisting of five chemically related elements, fluorine, chlorine, bromine, iodine, and astatine.
Atoms within hydrogen halides are bound by covalent bonds, forming polar molecules.
A non-polar amino acid. L and D molecules are mirror images of each other.
One of the best known synthetic polymers.
Buildings constructed of prefabricated concrete blocks were widespread in the former Socialist countries.
Examining solids formed by the intersection of a cube and a plane.
This animation demonstrates various types of cuboids through everyday objects.
Building cubes shown in several views from the available unit cubes aids spatial vision and other skills.
The Early Christian Necropolis in Pécs, Hungary is an outstanding historical site.
The primary source of energy for living cells.
The Pauline monastery was built for Hungarian hermit monks in 1225.
Log houses were a typical type of dwellings in Hungary in the Árpád era.
A solid, grey substance which sublimates when heated. Its solution in alcohol is called 'tincture of iodine', it is a disinfectant.
A colourless gas with a typical odour, produced by dehydrating methanol.
A solid substance formed at low temperatures on the ocean floors of Earth by the high pressure.
Also known as chloroform, used as a solvent in laboratories, earlier as an anaesthetic.
An isomer of butane, a colourless, flammable gas.