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Ytterbia is a colorless compound, Yb2O3, used in certain alloys and ceramics. Also known as ytterbium oxide.

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Insulator

Poor electric and heat conductor.

Molecule

The smallest particle of an element or compound capable of a stable, independent existence.

Leclanche Cell

A common type of dry cell.

Valence Bond Theory

Assumes that covalent bonds are formed when atomic orbitals on different atoms overlap and the electrons are shared.

Frequency

The number of repeating corresponding points on a wave that pass a given observation point per unit time.

Isomorphous

Refers to crystals having the same atomic arrangement.

Plasma

A physical state of matter which exists at extremely high temperatures in which all molecules are dissociated and most atoms are ionized.

Standard Electrodes

Half-cells in which the oxidized and reduced forms of a species are present at unit activity, 1.0M solutions of dissolved ions, 1.0atm partial pressure of gases, and pure solids and liquids.

Allotropes

Different forms of the same element in the same physical state.

Voltaic Cells

Electrochemical cells in which spontaneous chemical reactions produce electricity, also called galvanic cells.