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Dirvožemio tarša

Animacijoje parodyti pagrindiniai dirvožemio taršos šaltiniai

Oro užterštumas

Ši animacija rodo pagrindinius oro taršos šaltinius: žemės ūkio, pramonės ir miesto oro tarša.

Electron configuration of calcium

This animation shows the electron configuration of the calcium atom.

Carbon cycle

Carbon is bound in organic substances during photosynthesis, while during breathing, it is released into the atmosphere.

Structure of nitrogen molecules

This animation demonstrates the structure of nitrogen molecules, with one sigma and two pi bonds holding the atoms together.

Atmospheric circulation

The difference between the temperature of the polar and equatorial zones causes atmospheric circulation which is affected by a number of factors, including...

Development of the atomic model

Major phases in the history of theories and views about the structure of the atom.

Environmentally friendly vehicles

Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.

Aluminium smelting

Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.

Chain reaction

Energy released during nuclear fission can be used for civilian or military purposes.

Greenhouse effect

Human activity increases the greenhouse effect and leads to global warming.

Ozone layer

The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for life on Earth.

Phase transitions

A phase transition is the change of a substance from one state of matter to another.

Covalent bonds in benzene molecules

In benzene there are sigma bonds and delocalised pi bonds between carbon atoms.

Phosphorus pentoxide (P₂O₅)

A compound formed as white smoke during the combustion of phosphorus.

Nitrous acid (HNO₂)

One of the oxoacids of nitrogen. Colourless, moderate acid with a pungent odour, that exists only in aqueous solution.

Soap

Fatty acid molecules consist of a polar head and a non-polar tail, therefore they are suitable for removing fat stains.

Hexagonal metallic lattice

Metals forming hexagonal metallic lattices are rigid and difficult to machine.

Chlorination of methane by a substitution reaction

During the substitution reaction the hydrogen atoms of methane are substituted with chlorine atoms, the by-product is hydrogen chloride.

Formation of hydrogen molecules

Hydrogen atoms within hydrogen molecules are held together by a covalent bond.

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