Phosphorus trichloride (PCl₃)

Colourless liquid that gives off smoke in moist air.

Molecule exercise II (Polarity)

An exercise about the polarity of molecules.

Molecule exercises I (Bonds)

An exercise about different types of bonds.

Building shapes (one colour)

Build 3D shapes from unit cubes with the help of several views.

Grouping of solids 4

This animation demonstrates various groups of solids through examples.

Iodine crystal

A solid, grey substance which sublimates when heated. Its solution in alcohol is called...

Dimethyl ether (C₂H₆O)

A colourless gas with a typical odour, produced by dehydrating methanol.

Log house

Log houses were a typical type of dwellings in Hungary in the Árpád era.

Pauline monastery

The Pauline monastery was built for Hungarian hermit monks in 1225.

Earth fortification, Hungary

A triangular earth fortification, used by the leader of one of the old Hungarian tribes...

Methane hydrate

A solid substance formed at low temperatures on the ocean floors of Earth by the high...

Building shapes (multi colour)

Build 3D shapes from unit cubes with the help of several views.

Dichloromethane (CH₂Cl₂)

It is produced by treating methane with chlorine gas and used as a solvent.

2-methylpropane (isobutane, C₄H₁₀)

An isomer of butane, a colourless, flammable gas.

Trichloromethane, chloroform (CHCl₃)

Also known as chloroform, used as a solvent in laboratories, earlier as an anaesthetic.

Grouping of solids 1

This animation demonstrates various groups of solids through examples.

Glacier (basic)

A glacier is a large body of ice that forms from snow, and is in constant, slow motion.

Sulphur trioxide (SO₃)

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

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