The Mole and Avogadro's Number

By Debbie McClinton Dr. Miriam Douglass Dr. Martin McClinton

Learners examine how chemists use moles to "count" atoms by weight. Examples are given.

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By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton

Ions are electrically charged particles obtained from an atom or from a chemically bonded group of atoms by adding or removing electrons. Eight examples illustrate the number of protons, neutrons, and electrons in positive ions (cations) and in negative ions (anions).

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Product Yields in Chemical Reactions

By Debbie McClinton, Dr. Miriam Douglass, Dr. Martin McClinton

Learners examine the meaning of theoretical yield, actual yield, and percent yield. They test their knowledge by solving two problems.

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Chemical Formulas

By Debbie McClinton, Dr. Martin McClinton