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Involves a change in the composition of a nucleus and can evolve or absorb an extraordinarily large amount of energy.

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Phase Diagram

Diagram that shows equilibrium temperature-pressure relationships for different phases of a substance.

Heat of Crystallization

The amount of heat that must be removed from one gram of a liquid at its freezing point to freeze it with no change in temperature.

Chemical Hygiene Plan (CHP)

A written program developed and implemented by an employer designating proceedures, equipment, personal protective equipment, and work practices that are capable of protecting employees from the health hazards presented by hazardous chemicals usid in that particular workplace.

Bronsted-Lowry Acid

A proton donor.

Sigma Orbital

Molecular orbital resulting from head-on overlap of two atomic orbitals.

Common Ion Effect

Suppression of ionization of a weak electrolyte by the presence in the same solution of a strong electrolyte containing one of the same ions as the weak electrolyte.

Radioactivity

The spontaneous disintegration of atomic nuclei.

Domain

A cluster of atoms in a ferromagnetic substance, all of which align in the same direction in the presence of an external magnetic field.

How to keep flowers in a vase for long time

The best gift for a woman, as you know, is a beautiful bouquet of flowers. But the cut flowers at home quite quickly wither. But your favorite roses or tulips can keep their freshness if you use our advice. Chemistry and various chemical elements will help us in this difficult matter!

Molarity

Number of moles of solute per litre of solution.