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Description of the quantitative relationships among substances as they participate in chemical reactions.

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First Law of Thermodynamics

The total amount of energy in the universe is constant (also known as the Law of Conservation of Energy) energy is neither created nor destroyed in ordinary chemical reactions and physical changes.

Band

A series of very closely spaced, nearly continuous molecular orbitals that belong to the crystal as a whole.

Inert s-pair Effect

Characteristic of the post-transition minerals, tendency of the outermost s electrons to remain nonionized or un shared in compounds.

Nonbonding Orbital

A molecular orbital derived only from an atomic orbital of one atom, lends neither stability nor instability to a molecule or ion when populated with electrons.

Gangue

Sand, rock, and other impurities surrounding the mineral of interest in an ore.

Dextrorotatory

Refers to an optically active substance that rotates the plane of plane polarized light clockwise, also called dextro.

Raoult's Law

The vapor pressure of a solvent in an ideal solution decreases as its mole fraction decreases.

All Chemicals - Chemical Glossary

The Chemical Glossary currently has 651 chemical entries. You may search the Chemical Glossary by entering the keyword in the search box or by browsing the entire chemical glossary by letter in alphabetical order.

Electrochemistry

Study of chemical changes produced by electrical current and the production of electricity by chemical reactions.

Saturated Hydrocarbons

Hydrocarbons that contain only single bonds. They are also called alkanes or paraffin hydrocarbons.