Iodine (I₂)

A solid, grey substance which sublimates when heated. Its solution in alcohol is called tincture of iodine, it is a disinfectant.

Ichthyosaur

Fish-like marine dinosaurs which resembled dolphins; a good example of convergent evolution.

Cube sections (exercise)

Examining solids formed by the intersection of a cube and a plane.

Eurasian Avars (8th century)

The Avars established a stable empire in the Carpathian Basin between the 6th-8th centuries.

Sulphur dioxide (SO₂)

Sulphur dioxide emission is the main cause of acid rains. It is an intermediate product in the production of sulphuric acid.

Alanine (C₃H₇NO₂)

A non-polar amino acid. L and D molecules are mirror images of each other.

Lighthouse

Lighthouses are used as an aid to navigation in coastal waters.

Early Christian Necropolis, Cella trichora (Pécs, Hungary)

The Early Christian Necropolis in Pécs, Hungary is an outstanding historical site.

Methanol (methyl alcohol) (CH₃OH)

The simplest saturated alcohol. A highly toxic compound, easily confusable with ethanol.

Building shapes (one colour)

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

Methane (CH₄)

The first member in the homologous series of alkanes.

Grouping of solids 4

This animation demonstrates various groups of solids through examples.

Bin lorries

Bin lorries play an important role in the life of towns and cities.

Catholic burial chapel (Feldebrő, Hungary)

One of the most important historical buildings in Hungary, a parish church built in the 11th century.

Silver bromide (AgBr)

A white, crystalline compound which breaks down when exposed to light.

Yurt

A circular, domed, portable tent covered by felt, typically used by nomadic peoples.

Construction of a panel building

Buildings constructed of prefabricated concrete blocks were widespread in the former Socialist countries.

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