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Chemical

A chemical is a either a chemical element or a material with a defined composition of such elements: a chemical compound. The term is often used to refer to bulk material, rather than to individual microscopic or submicroscopic particles, e.g., "A chemical is a specific collection of atoms or molecules."

See also: chemistry, chemical industry, molecule, mixture.

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Balancing Equations
A text tutorial offering sample problems, steps, and strategies.
http://members.aol.com/profchm/balance.html

Balancing Chemical Equations
Shockwave activity to help in balancing equations.
http://www.mcli.dist.maricopa.edu/proj/mu/eqbal/

Balancing Chemical Equations Tutorial
Visual shockwave exercise in which you type in coefficients and check your answers.
http://www.mpcfaculty.net/mark_bishop/balancing_equations_tutorial.htm

Balancing Chemical Equations
Animation showing steps in adding coefficients.
http://richardbowles.tripod.com/chemistry/balance.htm

A Chemical Jigsaw Puzzle
Collection of printable learning aids to help improve the understanding of combining powers (valencies) in chemical reactions.
http://www.harmsy.freeuk.com/jigsaw.html

Balancing Chemical Equations
Animated tutorial with a seesaw showing what happens if you add coefficients to certain compounds and molecules in chemical equations.
http://chemistry.boisestate.edu/rbanks/inorganic/balancing.html



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