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The direct solidification of a vapor by cooling, the reverse of sublimation.

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Dextrorotatory

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

Diagonal Similarities

Refers to chemical similarities in the Periodic Table of elements of Period 2 to elements of Period 3 one group to the right, especially evident toward the left of the periodic table.

Buffer Solution

Solution that resists change in pH, contains either a weak acid and a soluble ionic salt of the acid or a weak base and a soluble ionic salt of the base.

Diamagnetism

Weak repulsion by a magnetic field.

Alkaline Battery

A dry cell in which the electrolyte contains KOH.

Structural Isomers

Compounds that contain the same number of the same kinds of atoms in different geometric arrangements.

Yellowcake

The solid form of mixed uranium oxide, which is produced from uranium ore in the uranium recovery (milling) process.

Liquid Aerosol

Colloidal suspension of liquid in gas.

Strong Field Ligand

Ligand that exerts a strong crystal or ligand electrical field and generally forms low spin complexes with metal ions when possible.

Molecular Orbital Theory

A theory of chemical bonding based upon the postulated existence of molecular orbitals.