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Physical properties of solutions that depend upon the number but not the kind of solute particles present.

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Law of Conservation of Matter

There is no detectable change in the quantity of matter during an ordinary chemical reaction.

Intermolecular Forces

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

Band Theory of Metals

Theory that accounts for the bonding and properties of metallic solids.

Gem-dimethyl group

Two methyl groups of the same carbon atom.

Particulate Matter

Fine divided solid particles suspended in polluted air.

Nuclear Fission

The process in which a heavy nucleus splits into nuclei of intermediate masses and one or more protons are emitted.

Electron Configuration

Specific distribution of electrons in atomic orbitals of atoms or ions.

Chemistry of the sky

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

Actinides

Elements 89 to 103 (between lawrencium and actinium) on the periodic table. Only the first four have been found in nature in appreciable amounts. The remainder have been produced synthetically.

Electromotive Series

The relative order of tendencies for elements and their simple ions to act as oxidizing or reducing agents, also called the activity series.