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Potential difference between two electrodes, a measure of the chemical potential for a redox reaction to occur.

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Dosimeter

A small, calibrated electroscope worn by laboratory personnel and designated to detect and measure incident ionizing radiation or chemical exposure.

Water Equivalent

The amount of water that would absorb the same amount of heat as the calorimeter per degree temperature increase.

Zone Refining

A method of purifying a bar of metal by passing it through an induction heater, this causes impurties to move along a melted portion. This method applies the fact when a metal crystallizes on cooling, impurities are automatically expelled as they do not form part of the crystal.

Potential Energy

Energy that matter possesses by virtue of its position, condition or composition.

Sublimation

The direct vaporization of a sold by heating without passing through the liquid state.

Neutralization

The reaction of an acid with a base to form a salt and water. Usually, the reaction of hydrogen ions with hydrogen ions to form water molecules.

Lead Storage Battery

Secondary voltaic cell used in most automobiles.

Reaction Quotient

The mass action expression under any set of conditions (not necessarily equlibrium), its magnitude relative to K determines the direction in which the reaction must occur to establish equilibrium.

Cloud Chamber

A device for observing the paths of speeding particiles as vapor molecules condense on them to form foglike tracks.

Transition State Theory

Theory of reaction rates that states that reactants pass through high-energy transition states before forming products.