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There is no detectable change in the quantity of matter during an ordinary chemical reaction.

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    The scanning tunneling microscope (STM) invented by Heinrich Rohrer and Gerd Binnig in the 1980s still manages to do a great job today and competes with more advanced microscope types. The scanning tunneling microscope is used for studying the surface atoms that are found on various materials. The...

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Overlap

The interaction of orbitals on different atoms in the same region of space.

Amide

Compound containing the O-C-N group.Compound that can be considered a derivative of ammonia in which one or more hydrogens are replaced by a alkyl or aryl groups.

 

Density

Density is the ratio b/w Mass and Volume: D=M/V

Dispersing Medium

The solvent-like phase in a colloid.

Optical Isomers

Stereoisomers that differ only by being nonsuperimposable mirror images of each other, like right and left hands, also called enantiomers.

Valence Bond Theory

Assumes that covalent bonds are formed when atomic orbitals on different atoms overlap and the electrons are shared.

Ionization Constant

Equilibrium constant for the ionization of a weak electrolyte.

Autoionization

An ionization reaction between identical molecules.

Line Spectrum

An atomic emission or absorption spectrum.

Turning iron nail into copper nail

This simple chemical experiment shows the so-called process of copper plating of metal products. Copper has the ability to deposit on a metal surface.