Colourless liquid that gives off smoke in moist air.
An exercise about the polarity of molecules.
The simplest aromatic amine. Its scientific name is phenylamine.
The sum of the volume of the ´tetrahedrons´ gives an approximation of the volume of the sphere.
Edges, diagonals and faces of a cuboid can be identified by its vertices.
Practising the use of the spatial coordinate system with the help of a computer-designed kitchen model.
Pick the shape that is shown in different views below.
As a milestone in the history of aviation, Oszkár Asboth´s first helicopter made its first flight in 1928.
An exercise about different types of bonds.
Not all nets consisting of 6 congruent squares are foldable into cubes.
An exercise about compound ions.
A colourless liquid, a tertiary amide.
A component of DNA, it contains one less hydroxyl group than β-D-ribose.
The sixth member in the homologous series of straight-chain alkanes.
One of the oxides of sulphur, forms sulphuric acid with water.
One of the hydrogen halides, it is used for the production of alkyl bromides.
A basic heterocyclic organic compound; a colourless, pungent toxic liquid.
Member of the cycloalkane homologous series.
This animation demonstrates the geographical regions of Hungary.
A compound ion formed when a water molecule releases a proton.