Major phases in the history of theories and views about the structure of the atom.
Combining a conventional internal combustion engine propulsion system with an electric propulsion system reduces emission.
A phase transition is the change of a substance from one state of matter to another.
This animation shows the electron configuration of the calcium atom.
In benzene there are sigma bonds and delocalised pi bonds between carbon atoms.
Energy released during nuclear fission can be used for civilian or military purposes.
The difference between the temperature of the polar and equatorial zones causes atmospheric circulation which is affected by a number of factors, including...
Aluminium smelting is the process of extracting aluminium from alumina by electrolysis.
Human activity increases the greenhouse effect and leads to global warming.
This animation demonstrates the structure of nitrogen molecules, with one sigma and two pi bonds holding the atoms together.
The ozone layer filters the Sun´s harmful UV radiation, therefore it is indispensable for life on Earth.
Carbon is bound in organic substances during photosynthesis, while during breathing, it is released into the atmosphere.
Raw iron is produced from iron ore in iron smelters.
Ammonium chloride is the result of the reaction of ammonia and hydrogen chloride
Metals forming hexagonal metallic lattices are rigid and difficult to machine.
The least tightly packed crystal structure.
Hydrogen atoms within hydrogen molecules are held together by a covalent bond.
The design and structure of modern houses play an important role in environmental protection.
Polymerised ethylene is known as polyethylene, a type of plastic.
A compound formed as white smoke during the combustion of phosphorus.