Chemistry Notes

Learn chemistry. Here you will find a collection of chemistry notes, projects, worksheets, and labs.

Solubility Rules Mnemonics — Learn the solubility rules to predict precipitate formation. Included are memorization tips and a printable chart.

Solubility Rules Chart and Memorization Tips

This entry was posted on August 1, 2021 by Anne Helmenstine (updated on August 9, 2021)

Spectator Ions — Learn about spectator ions in aqueous solutions. See how to identify them and how to cancel them out to write the net ionic equation.

Spectator Ions in Aqueous Solution

This entry was posted on July 31, 2021 by Anne Helmenstine (updated on August 14, 2021)

Noble Gas Configuration — Learn about the noble gas configuration of atoms. Get a list of electron configurations for all 118 elements.

Noble Gas Configuration – Shorthand Electron Configuration

This entry was posted on July 27, 2021 by Anne Helmenstine (updated on August 2, 2021)

Zwitterion Definition and Example — Get the zwitterion definition and examples. Learn about the properties and uses of zwitterions in chemistry.

Zwitterion Definition and Examples

This entry was posted on July 22, 2021 by Anne Helmenstine (updated on August 5, 2021)

Hydronium Ion or Oxonium — Get facts about the hydronium ion or oxonium. Learn how it forms and why it is important for pH calculations and other chemistry.

Hydronium Ion or Oxonium

This entry was posted on July 21, 2021 by Anne Helmenstine (updated on August 5, 2021)

Single, Double, and Triple Bonds — Learn about single, double, and triple bonds. Get examples of compounds and learn the properties of these types of covalent bonds.

Single, Double, and Triple Bonds

This entry was posted on July 20, 2021 by Anne Helmenstine (updated on August 2, 2021)

Arrhenius Acids and Bases — Learn about Arrhenius acids and bases. Get a list of the acids and bases and examples of chemical reactions.

Arrhenius Acids and Bases

This entry was posted on July 18, 2021 by Anne Helmenstine (updated on August 14, 2021)

Adsorption vs Absorption — Learn the difference between adsorption and absorption and get definitions and examples of these two sorption processes.

Adsorption vs Absorption – Differences and Examples

This entry was posted on July 15, 2021 by Anne Helmenstine (updated on July 26, 2021)

Monatomic Ions — Learn about monatomic ions. Get the monatomic ion definition and examples of both anions and cations. Learn how to name the ions.

Monatomic Ion Definition and Examples

This entry was posted on July 13, 2021 by Anne Helmenstine (updated on July 19, 2021)