Chemical Change Examples

Examples of chemical changes

ThoughtCo. / Hugo Lin

Chemical changes involve chemical reactions and the creation of new products. Typically, a chemical change is irreversible. In contrast, physical changes do not form new products and are reversible.

Common Chemical Changes

  • The rusting of iron
  • Combustion (burning) of wood
  • The metabolism of food in the body
  • Mixing an acid and a base, such as hydrochloric acid (HCl) and sodium hydroxide (NaOH)
  • Cooking an egg
  • Digesting sugar with the amylase in saliva
  • Mixing baking soda and vinegar to produce carbon dioxide gas
  • Baking a cake
  • Electroplating a metal
  • Using a chemical battery
  • The explosion of fireworks
  • Rotting bananas
  • Grilling a hamburger
  • Milk going sour

While it's not always easy to tell a chemical change has occurred (as opposed to a physical change), there are some telltale signs. Chemical changes may cause a substance to:

  • Change color
  • Change temperature
  • Produce bubbles
  • Produce precipitate (in liquids)

Chemical changes can also be considered to be any phenomenon that allows a scientist to measure chemical properties.

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Your Citation
Helmenstine, Anne Marie, Ph.D. "Chemical Change Examples." ThoughtCo, Aug. 27, 2020, Helmenstine, Anne Marie, Ph.D. (2020, August 27). Chemical Change Examples. Retrieved from Helmenstine, Anne Marie, Ph.D. "Chemical Change Examples." ThoughtCo. (accessed March 28, 2023).