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The pressure exerted by one gas in a mixture of gases.

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Eutrophication

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

Crystalline Solid

A solid characterized by a regular, ordered arrangement of particles.

Chemistry of the sky

Chemistry can teach us about the composition of celestial bodies and determine their age.

Gangue

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

Vapor Pressure

The particle pressure of a vapor at the surface of its parent liquid.

Electron

A subatomic particle having a mass of 0.00054858 amu and a charge of 1-.

Lone Pair

Pair of electrons residing on one atom and not shared by other atoms, unshared pair.

Molecular Geometry

The arrangement of atoms (not lone pairs of electrons) around a central atom of a molecule or polyatomic ion.

Nucleons

Particles comprising the nucleus, protons and neutrons.

Dimer

Molecule formed by combination of two smaller (identical) molecules.