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Mathematical method of treating particles on the basis of quantum theory, which assumes that energy (of small particles) is not infinitely divisible.

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Crystal Lattice Energy

Amount of energy that holds a crystal together, the energy change when a mole of solid is formed from its constituent molecules or ions (for ionic compounds) in their gaseous state.

Photon

A packet of light or electromagnetic radiation, also called quantum of light.

 

Saturated Hydrocarbons

Hydrocarbons that contain only single bonds. They are also called alkanes or paraffin hydrocarbons.

Displacement Reactions

Reactions in which one element displaces another from a compound.

 

Coke

An impure form of carbon obtained by destructive distillation of coal or petroleum.

Semipermable Membrane

A thin partition between two solutions through which certain molecules can pass but others cannot.

Solvation

The process by which solvent molecules surround and interact with solute ions or molecules.

xenon

A heavy, colorless, chemically inactive, monatomic gaseous element used for filling radio, television, and luminescent tubes. Symbol: Xe, at. wt.: 131.30, at. no.: 54.

Domain

A cluster of atoms in a ferromagnetic substance, all of which align in the same direction in the presence of an external magnetic field.

Lewis Dot Formula (Electron Dot Formula)

Representation of the core of a molecule, ion or formula unit by showing atomic symbols and only outer shell electrons.