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Assumes that covalent bonds are formed when atomic orbitals on different atoms overlap and the electrons are shared.

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Hydrate

A solid compound that contains a definite percentage of bound water.

Boyle's Law

At constant temperature the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure.

Alcohol

Hydrocarbon derivative containing an --OH group attached to a carbon atom not in an aromatic ring. Alcohols are a class of organic compounds containing the hydroxyl group, OH, attached to a carbon atom.

Molarity

Number of moles of solute per litre of solution.

Intermolecular Forces

Forces between individual particles (atoms, molecules, ions) of a substance.

Alpha (a) Particle

Helium ion with 2+ charge, an assembly of two protons and two neutrons.

Secondary Standard

A solution that has been titrated against a primary standard. A standard solution is a secondary standard.

 

Alkaline Battery

A dry cell in which the electrolyte contains KOH.

Pairing

A favourable interaction of two electrons with opposite m , values in the same orbital.

xanthene dye

Any of a group of dyes having a molecular structure related to that of xanthene in which the aromatic (C6H4) groups are the chromophore.