Chemistry

Learn about chemistry, the study of matter and its reactions. Find projects, study notes, periodic tables, and worked example problems.

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 Recently updated !

This entry was posted on August 1, 2021 by Anne Helmenstine (updated on August 1, 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 Recently updated !

This entry was posted on July 31, 2021 by Anne Helmenstine (updated on August 1, 2021)

Difference Between Isopropyl Alcohol and Ethyl Alcohol — Learn the difference between isopropyl alcohol and ethyl alcohol. See which you can drink and which is a better disinfectant.

Difference Between Isopropyl Alcohol and Ethyl Alcohol Recently updated !

This entry was posted on July 28, 2021 by Anne Helmenstine (updated on July 28, 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 Recently updated !

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

Vulcanization of Rubber — Learn about the vulcanization of rubber. See the chemicals and learn how the process works.

Vulcanization of Rubber

This entry was posted on July 24, 2021 by Anne Helmenstine

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 July 22, 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 Recently updated !

This entry was posted on July 21, 2021 by Anne Helmenstine (updated on July 26, 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 Recently updated !

This entry was posted on July 20, 2021 by Anne Helmenstine (updated on July 26, 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 Recently updated !

This entry was posted on July 18, 2021 by Anne Helmenstine (updated on July 26, 2021)