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Compounds that contain at least one atom (other than H) that shares fewer than eight electrons.

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Hydrocarbons

Compounds that contain only carbon and hydrogen.

Chemical Hygiene Officer (CHO)

A person or employee who is qualified by training or experience to provide technical guidance in the development and implementations of the provisions of a Chemical Hygiene Plan (CHP)

Optical Isomers

Stereoisomers that differ only by being nonsuperimposable mirror images of each other, like right and left hands, also called enantiomers.

Geiger counter

A gas filled tube which discharges electriaclly when ionizing radiation passes through it.

Ionization

In aqueous solution, the process in which a molecular compound reacts with water and forms ions.

Boiling Point

The temperature at which the vapor pressure of a liquid is equal to the applied pressure, also the condensation point

Bonding Pair

Pair of electrons involved in a covalent bond.

Crystal Lattice Energy

Amount of energy that holds a crystal together, the energy change when a mole of solid is formed from its constituent molecules or ions (for ionic compounds) in their gaseous state.

Eutrophication

The undesirable overgrowth of vegetation caused by high concentrates of plant nutrients in bodies of water.

Metal

An element below and to the left of the stepwise division (metalloids) in the upper right corner of the periodic table, about 80% of the known elements are metals.