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Solvent (or mobile phase) which passes through a chromatographic column and removes the sample components from the stationary phase.

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Collision Theory

Theory of reaction rates that states that effective collisions between reactant molecules must occur in order for the reaction to occur.

Coordination Sphere

The metal ion and its coordinating ligands but not any uncoordinated counter-ions.

Enzyme

A protein that acts as a catalyst in biological systems.

Fractional Distillation

The process in which a fractioning column is used in distillation apparatus to separate components of a liquid mixture that have different boiling points.

Explosive limits

The range of concentrations over which a flammable vapour mixed with proper ratios of air will ignite or explode if a source of ignitions is provided.

Chemical Equation

Description of a chemical reaction by placing the formulas of the reactants on the left and the formulas of products on the right of an arrow.

Condensed Phases

The liquid and solid phases, phases in which particles interact strongly.

Matter

Anything that has mass and occupies space.

Ampere

Unit of electrical current, one ampere equals one coulomb per second.

 

Thermal Cracking

Decomposition by heating a substance in the presence of a catalyst and in the absence of air.