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Pair of electrons involved in a covalent bond.

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Differential Thermal Analysis (DTA)

A technique for observing the temperature, direction, and magnitude of thermally induced transitions in a material by heating/cooling a sample and comparing its temperature with that of an inert reference material under similar conditions.

Potential Energy

Energy that matter possesses by virtue of its position, condition or composition.

Polymorphous

Refers to substances that crystallize in more than one crystalline arrangement.

Amine

Derivatives of ammonia in which one or more hydrogen atoms have been replaced by organic groups.

Dextrorotatory

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

Reaction Ratio

The relative amounts of reactants and products involved in a reaction, maybe the ratio of moles. millimoles, or masses.

 

Nonpolar Bond

Covalent bond in which electron density is symmetrically distributed.

Neutron

A neutral subatomic particle having a mass of 1.0087 amu.

Adhesive Forces

Forces of attraction between a liquid and another surface.

Lewis Acid

Any species that can accept a share in an electron pair.