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Theory that accounts for the bonding and properties of metallic solids.

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Leclanche Cell

A common type of dry cell.

Standard Entropy

The absolute entropy of a substance in its standard state at 298 K.

Absorption Spectrum

Spectrum associated with absorption of electromagnetic radiation by atoms (or other species) resulting from transitions from lower to higher energy states. An absorption spectrum is the inverse of an emission spectrum.

Voltaic Cells

Electrochemical cells in which spontaneous chemical reactions produce electricity, also called galvanic cells.

 

Henry's Law

The pressure of the gas above a solution is proportional to the concentration of the gas in the solution.

Lewis Base

Any species that can make available a share in an electron pair.

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.

Oxidation-reduction Reactions

Reactions in which oxidation and reduction occur, also called redox reactions.

Enantiomer

One of the two mirror-image forms of an optically active molecule.

Alkali Metals

Metals of Group IA (Na, K, Rb).