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Chemical Weathering of Limestone
http://www.rsc.org/Education/Teachers/Resources/jesei/chemweat/home.htm
From DLESE Community Collection (DCC)
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This activity demonstrates the chemical attack on limestone by rain that is naturally acidic (containing dissolved carbon dioxide) and acid rain (rain that is more acidic because of dissolved pollutants such as sulfur dioxide and nitrogen oxides). Students will blow through a straw into water containing a Universal Indicator and note that the water becomes slightly acidic because carbon dioxide from their breath dissolves in it. They then add limestone chips to the water and note that the solution gradually becomes neutral as the calcium carbonate in the chips reacts with the acid. The site also has instructions for teacher and students, a list of materials, questions to answer, and a glossary.
Intended for grade levels:
  • Middle (6-8)
Type of resource:
  • For the classroom:
    • Lab activity
  • Text:
    • Glossary
Subject:
  • Atmospheric science
  • Chemistry
  • Environmental science
Technical requirements:
No specific technical requirements, just a browser required
Cost / Copyright:
No cost
Copyright is waived for original material published on this site if the material is required for use within the laboratory or classroom. The copyright of material reproduced by permission of other publishers rests with the originating publisher.
DLESE Catalog ID: DLESE-000-000-006-563
Educational standards:
  • National Science Education Standards (NSES):
    • 5-8:
      • A - Science as inquiry:
        • Abilities necessary to do scientific inquiry
      • B - Physical science:
        • Properties and changes of properties in matter
      • D - Earth and space science:
        • Structure of the earth system
Resource contact / Creator / Publisher:
Publisher: Joint Earth Science Education Initiative (JESEI)