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Energy released during nuclear fission can be used for civilian or military purposes.
Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.
Major phases in the history of theories and views about the structure of the atom.
This animation shows the electron configuration of the calcium atom.
In benzene there are sigma bonds and delocalized pi bonds between carbon atoms.
A phase transition is the transformation of a substance from one state of matter to another.
This animation demonstrates the structure of nitrogen molecules, with one sigma and two pi bonds holding the atoms together.
The difference between the temperature of the polar and equatorial zones causes atmospheric circulation which is affected by a number of factors, including...
Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.
Carbon is bound in organic substances during photosynthesis, while during breathing, it is released into the atmosphere.
The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for life on Earth.
Human activity increases the greenhouse effect and leads to global warming.
Common salt is dissolved by water: polar water molecules form a coat around the ions.
Addition is a reaction in which the molecules of two or more substances unite without the formation of a by-product.
The dissolution of zinc in hydrochloric acid produces hydrogen gas.
Limestone is a widely and diversely used material.
Ammonium chloride is the result of the reaction of ammonia and hydrogen chloride
One of the oxoacids of nitrogen. Colorless, moderate acid with a pungent odor, that exists only in aqueous solution.
A compound formed as white smoke during the combustion of phosphorus.
During the substitution reaction the hydrogen atoms of methane are substituted with chlorine atoms, the by-product is hydrogen chloride.