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An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.

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Monoprotic Acid

Acid that can form only one hydronium ion per molecule, may be strong or weak. Acid that contains one ionizable hydrogen atom per formula unit.

Amino Acid

Compound containing both an amino and a carboxylic acid group.The --NH2 group.

Hydrophilic Colloids

Colloidal particles that repel water molecules.

Pairing Energy

Energy required to pair two electrons in the same orbital.

Heisenberg Uncertainty Principle

It is impossible to determine accurately both the momentum and position of an electron simultaneously.

Water Equivalent

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

Associated Ions

Short-lived species formed by the collision of dissolved ions of opposite charges.

Copper

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

Metalloids

Elements with properties intermediate between metals and nonmetals: B, Al, Si, Ge, As, Sb, Te, Po, and At.

Ligand

A Lewis base in a coordination compound.