Molecule exercise VII (Organic nitrogen compounds)

An exercise about the groups and structure of organic nitrogen compounds.

Cyclohexane (C₆H₁₂)

A colourless liquid, easily solved by organic solvents but not by water.

Bromine (Br₂)

One of the halogens, it may cause skin irritation.

Ammonium ion (NH₄⁺)

A compound ion generated when a proton is added to an ammonia molecule.

Imidazole (C₃H₄N₂)

A biologically and practically important organic compound.

Life on the farm (Hungary)

Farming consists of special agricultural activities.

The First Hungarian automobile (1904)

Hungarian engineer János Csonka built his first automobiles for the Hungarian Postal Service.

Ancient Athenian citizen with his wife

The Athenian democracy was built on the community of citizens with full rights.

Medieval town in Central Europe

Narrow streets and colourful houses gave medieval towns a special atmosphere.

Bus

Buses play an important role in public transport.

Clothing of Barbarians (5th century)

Clothing reflects the lifestyle and culture of the given era and region.

Clothing (Hungary, 10th century)

Dresses reflect the lifestyles and culture of the given era and region.

Cube sections (exercise)

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

Ottoman Sultan (16th century)

The leader of the Ottoman Empire was the Sultan, the lord of life and death.

Austrian Habsburg infantryman

The infantry of the Habsburg Empire were deployed in numerous battles.

Early Christian Necropolis, Cella Septichora (Pécs, Hungary, 4th century)

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

Clothing (Western Europe, 5-10th century)

Clothing reflects the lifestyle and culture of the region's inhabitants.

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