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The attractive forces that hold atoms together in elements or compounds.

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Coulomb

Unit of electrical charge.

Electromotive Series

The relative order of tendencies for elements and their simple ions to act as oxidizing or reducing agents, also called the activity series.

History of fireworks

There is an assumption that the history of fireworks started in China, about 2000 years ago. It is possible that the Chinese accidentally discovered explosions by burning bamboo canes.

Free Radical

A highly reactive chemical species carrying no charge and having a single unpaired electron in an orbital.

Potential Energy

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

Electron Affinity

The amount of energy absorbed in the process in which an electron is added to a neutral isolated gaseous atom to form a gaseous ion with a 1- charge, has a negative value if energy is released.

Leveling Effect

Effect by which all acids stronger than the acid that is characteristic of the solvent react with solvent to produce that acid, similar statement applies to bases. The strongest acid (base) that can exist in a given solvent is the acid (base) characteristic of the solvent.

Fluorescence

Absorption of high energy radiation by a substance and subsequent emission of visible light.

Standard Molar Volume

The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.

Ampere

Unit of electrical current, one ampere equals one coulomb per second.