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The geometric arrangement of orbitals containing the shared and unshared electron pairs surrounding the central atom of a molecule or polyatomic ion.

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Law of Partial Pressures (Dalton's Law)

The total pressure exerted by a mixture of gases is the sum of the partial pressures of the individual gases.

Bomb Calorimeter

A device used to measure the heat transfer between system and surroundings at constant volume.

Radioactive Dating

Method of dating ancient objects by determining the ratio of amounts of mother and daughter nuclides present in an object and relating the ratio to the object?s age via half-life calculations.

Basic Anhydride

The oxide of a metal that reacts with water to form a base.

Fatty Acids

An aliphatic acid, many can obtained from animal fats.

Antibonding Orbital

A molecular orbital higher in energy than any of the atomic orbitals from which it is derived, lends instability to a molecule or ion when populated with electrons, denoted with a star (*) superscript or symbol.

Percent by Mass

100% times the actual yield divided by theoretical yield.

Yellowcake

The solid form of mixed uranium oxide, which is produced from uranium ore in the uranium recovery (milling) process.

Metallic Conduction

Conduction of electrical current through a metal or along a metallic surface.

PseudobinaryIonic Compounds

Compounds that contain more than two elements but are named like binary compounds.