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Oxidation of metals in the presence of air and moisture.

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Valence Shell Electron Pair Repulsion Theory

Assumes that electron pairs are arranged around the central element of a molecule or polyatomic ion so that there is maximum separation (and minimum repulsion) among regions of high electron density.

 

20 interesting chemistry facts

20 interesting chemistry facts.

Solution

Homogeneous mixture of two or more substances.

Homogeneous Mixture

A mixture which has uniform composition and properties throughout.

Periodic Law

The properties of the elements are periodic functions of their atomic numbers.

Do you know: some mosquitoes bite people because of their clothes

If you have ever been bitten by a mosquito, someone nearby surely gave you an explanation of why the nasty insect decided to spoil your day. Maybe they told you that you smelt good, or you had a certain type of blood or that in that shirt you looked like a potential victim.

Electronic Transition

The transfer of an electron from one energy level to another.

Ionic Bonding

Chemical bonding resulting from the transfer of one or more electrons from one atom or a group of atoms to another.

Heat Capacity

The amount of heat required to raise the temperature of a body (of any mass) one degree Celsius.

Forbidden Zone

A relatively large energy separation between an insulator's highest filled electron energy band and the next higher energy vacant band. Beginning in the fourth energy level, a set of seven degenerate orbitals per energy level, higher in energy than s, p, and d orbitals of the same energy level.