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Substance that stoichiometrically limits the amount of product(s) that can be formed.

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Ideal Gas

A hypothetical gas that obeys exactly all postulates of the kinetic-molecular theory.

 

Moderator

A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision.

Copper

Discovered : known to ancient civilisations
Origin : The name is derived from 'Cuprum', the Latin name for Cyprus.

Saccharide

An organic compound containing a sugar or sugars.

Thermodynamics

The study of the energy transfers accompanying physical and chemical processes.

Oxidation

An algebraic increase in the oxidation number, may correspond to a loss of electrons.

Avogadro's Number

The number (6.022x10^23) of atoms, molecules or particles found in exactly 1 mole of substance.

Hydrogen Bond

A fairly strong dipole-dipole interaction (but still considerably weaker than the covalent or ionic bonds) between molecules containing hydrogen directly bonded to a small, highly electronegative atom, such as N, O, or F.

Homogeneous Equilibria

Equilibria involving only one species in a single phase. For example, all gases, all liquids or all solids.

Cloud Chamber

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