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A molecular orbit lower in energy than any of the atomic orbitals from which it is derived, lends stability to a molecule or ion when populated with electron.

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Suspension

A heterogeneous mixture in which solute-like particles settle out of solvent-like phase some time after their introduction.

Mechanism

The sequence of steps by which reactants are converted into products.

Corrosion

Oxidation of metals in the presence of air and moisture.

Hydrate

A solid compound that contains a definite percentage of bound water.

Geometrical Isomers

Compounds with different arrangements of groups on either side of a bond with restricted rotation, such as a double bond or a single bond in a ring, for example cis-trans isomers of certain alkenes. Stereoisomers that are not mirror images of each other, also known as position isomers.

Adhesive Forces

Forces of attraction between a liquid and another surface.

Homogeneous Mixture

A mixture which has uniform composition and properties throughout.

Solute

The dispersed (dissolved) phase of a solution.

Background Radiation

Ratiation extraneous to an experiment. Usually the low-level natural radiation form cosmic rays and trace radioactive substances present in our environment.

Beta Particle

Electron emitted from the nucleus when a neuton decays to a proton and an electron.