Chemical Weathering

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Updated on May 21, 2013

Rocks are not only changed by water, wind, and ice but can also be changed by chemicals. Chemical weathering is the process by which the actual minerals that rocks are made of are changed. Chemical weathering can cause minerals to decompose and even dissolve. Examples of chemical weathering include how acid rain can change the appearance of a statue and the way salty ocean water wears away cliffs.


How does the process of chemical weathering change a mineral?


  • Clear plastic jar
  • Piece of chalk
  • Vinegar
  • Goggles


  1. Put your goggles on first thing. When pouring the vinegar be careful not to spill any on you and do not put your face directly over the jar.
  2. Place a piece of chalk in the bottom of a clear plastic jar.
  3. Carefully pour vinegar into the jar to cover the chalk. Watch closely.
  4. Record your observations. What happened to the chalk? How did the vinegar react with the chalk?
Angela Pike has been in the world of elementary education for almost a decade, working as a classroom teacher, school writing specialist, and later a school administrator. After a recent leave from the education realm to stay at home with her children, she channeled her passion for education, science, and writing into a composing articles and educational activities for various companies.

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