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Molecular Formula: A notation that indicates the type and number of atoms in a molecule. The molecular formula of glucose is C6H12O6, which indicates that a molecule of glucose contains 6 atoms of carbon, 12 a . . . View Full Definition

Molecular Weight: The average mass of a molecule, calculated by summing the atomic weights of atoms in the molecular formula. Note that the words mass and weight are often used interchangeably in chemistry.

Molecular Model: A representation of a molecule. The model can be purely computational or it can be an actual physical object. Stick models show bonds, ball-and-stick models show bonds and atoms, and spacefi . . . View Full Definition

Molecular Medicine: The treatment of injury or disease at the molecular level. Examples include the use of dna-based diagnostic tests or medicine derived from dna sequence information.

Molecular Genetics: The study of macromolecules important in biological inheritance.

Basic Formula Price (BFP): Calculated monthly by USDA, the BFP is the base price for all milk regulated by federal milk marketing orders. Currently, the BFP is based on the preceding month’s average price of Grade B m . . . View Full Definition

Molecular Orbital: A wavefunction that describes the behavior of an electron in a molecule. Molecular orbitals are usually spread across many atoms in the molecule, and they are often described as a combinatio . . . View Full Definition

Molecular Geometry: 1. The three-dimensional shape of a molecule. For example, methane (CH4) has a tetrahedral molecular geometry. 2. The study of molecular shapes.

Molecular Sieve: A material that contains many small cavities interconnected with pores of precisely uniform size. Zeolites are an example. Molecular sieves adsorb molecules that are small enough to pass thr . . . View Full Definition

Unimolecular Reaction: A reaction that involves isomerization or decomposition of a single molecule.