DLESE description of Rates of Chemical Weathering

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Rates of Chemical Weathering

http://www.earth2class.org/er/teachers/resources/chemwthrg.php

From DLESE Community Collection (DCC)

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In this activity, students will investigate the weathering of rocks by chemical processes. They will use effervescent cleansing tablets as a model for rock, and vary surface area, temperature, and acidity to see how rapidly the "rock" dissolves. This investigation will help them understand three of the factors that affect the rate of chemical weathering and develop better understanding of how to design controlled experiments by exploring only one experimental variable at a time.

Intended for grade levels:

Intermediate (3-5)
Middle (6-8)
High (9-12)

Type of resource:

For the classroom:
- Lab activity

Subject:

Chemistry
Geological Sciences:
- Geology

Technical requirements:

No specific technical requirements, just a browser required

Cost / Copyright:

No cost

Copyright 1999-2005 by The Earth to Class, Lamont-Doherty Earth Observatory, Columbia University in the City of New York, NY. All rights reserved.

DLESE Catalog ID: DLESE-000-000-007-792

Educational standards:

National Science Education Standards (NSES):
- K-4:
  - Unifying concepts and processes:
    - Change, constancy, and measurement
    - Evidence, models, and explanation
  - A - Science as inquiry:
    - Abilities necessary to do scientific inquiry
    - Understanding about scientific inquiry
  - D - Earth and space science:
    - Changes in earth and sky
- 5-8:
  - Unifying concepts and processes:
    - Change, constancy, and measurement
    - Evidence, models, and explanation
  - A - Science as inquiry:
    - Abilities necessary to do scientific inquiry
    - Understanding about scientific inquiry
  - B - Physical science:
    - Properties and changes of properties in matter
  - D - Earth and space science:
    - Structure of the earth system
- 9-12:
  - Unifying concepts and processes:
    - Change, constancy, and measurement
    - Evidence, models, and explanation
  - A - Science as inquiry:
    - Abilities necessary to do scientific inquiry
    - Understandings about scientific inquiry
  - B - Physical science:
    - Chemical reactions
    - Structure and properties of matter
  - D - Earth and space science:
    - Geochemical cycles

Related resources:

This resource is part of 'Earth2Class: Teacher's Page (title provided or enhanced by cataloger)'

http://www.earth2class.org/er/teachers/

Resource contact / Creator / Publisher:

Author: Dr Michael J. Passow
Lamont-Doherty Earth Observatory, The Earth to Class

Publisher: Lamont-Doherty Earth Observatory, The Earth to Class
http://www.earth2class.org/

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