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It is the force in dynes acting along the surface of the liquid 1cm in length and perpendicular to it.

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Plasma

A physical state of matter which exists at extremely high temperatures in which all molecules are dissociated and most atoms are ionized.

Electrochemistry

Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.

Kinetic-molecular Theory

A theory, that attempts to explain macroscopic observations on gases in microscopic observations on gases in microscopic observations on gases in microscopic or molecular terms.

Substitution Reaction

A reaction in which an atom or a group of atoms is replaced by another atom or group of atoms.

Miscibility

The ability of one liquid to mix with (dissolve in) another liquid.

Concentration

Amount of solute per unit volume or mass of solvent or of solution.

Equilibrium or Chemical Equilibrium

A state of dynamic balance in which the rates of forward and reverse reactions are equal, the state of a system when neither forward or reverse reaction is thermodynamically favored.

Absorption Spectrum

Spectrum associated with absorption of electromagnetic radiation by atoms (or other species) resulting from transitions from lower to higher energy states. An absorption spectrum is the inverse of an emission spectrum.

Free Energy Change

The indicator of spontaneity of a process at constnt T and P. If delta-G is negative, the process is spontaneous.

Solvation

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