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The undesirable overgrowth of vegetation caused by high concentrates of plant nutrients in bodies of water.

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Formal Charge

A method of counting electrons in a covalently bonded molecule or ion, counts bonding electrons as though they were equally shared between the two atoms.

Endothermicity

The absorption of heat by a system as the process occurs.

Octane Number

A number that indicates how smoothly a gasoline burns.

Diagonal Similarities

Refers to chemical similarities in the Periodic Table of elements of Period 2 to elements of Period 3 one group to the right, especially evident toward the left of the periodic table.

Coke

An impure form of carbon obtained by destructive distillation of coal or petroleum.

Tetrahedral

A term used to describe molecules and polyatomic ions that have one atom in center and four atoms at the corners of a tetrahedron.

Chemical Bonds

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

Potential Energy

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

Primary Voltaic Cells

Voltaic cells that cannot be recharged, no further chemical reaction is possible once the reactants are consumed.

Limiting Reactant

Substance that stoichiometrically limits the amount of product(s) that can be formed.