Theory that accounts for the bonding and properties of metallic solids.
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Chemical Equation
Description of a chemical reaction by placing the formulas of the reactants on the left and the formulas of products on the right of an arrow.
Molecule
The smallest particle of an element or compound capable of a stable, independent existence.
Periodic Law
The properties of the elements are periodic functions of their atomic numbers.
Single Bond
Covalent bond resulting from the sharing of two electrons (one pair) between two atoms.
Double Bond
Covalent bond resulting from the sharing of four electrons (two pairs) between two atoms.
Nuclides
Refers to different atomic forms of all elements in contrast to ?isotopes?, which refer only to different atomic forms of a single element.
Heteronuclear
Consisting of different elements.
Le Chatelier's Principle
States that a system at equilibrium, or striving to attain equilibrium, responds in such a way as to counteract any stress placed upon it.
If a stress (change of conditions) is applied to a system at equilibrium, the system shifts in the direction that reduces stress.
Carcinogen
A substance capable of causing or producing cancer in mammals.
Nitrogen Cycle
The complex series of reactions by which nitrogen is slowly but continually recycled in the atmosphere, lithosphere and hydrosphere.
