ScienceBoom » Chemical http://scienceboom.com Science Demonstrations, Projects, Experiments and Teaching Tips from ScienceBoom Wed, 28 Dec 2011 20:40:10 +0000 en hourly 1 http://wordpress.org/?v=3.3 ScienceBoom Episode #4 – Chemical Weathering http://scienceboom.com/112/scienceboom-episode-4-chemical-weathering.htm http://scienceboom.com/112/scienceboom-episode-4-chemical-weathering.htm#comments Mon, 08 Sep 2008 12:00:03 +0000 Michael Doig http://scienceboom.com/112/scienceboom-episode-4-chemical-weathering.htm

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]]> In this episode we go to Central Park and take a look at the chemical weathering of Cleopatra’s Needle. Then we go back to lab and I show you how to model chemical weathering with your students.

Watch on: YouTube | Revver | Download

Host: Michael Doig
Duration: 4:19

Materials

  • Chalk
  • Paper Clip
  • Vinegar
  • Eye Dropper
  • 250ml Beaker

Weathering Fast Facts

  • Weathering is the mechanical and chemical breakdown of rocks and minerals, eventually creating soils.
  • Chemical weathering reactions include carbonation, hydrolysis, oxidation, solution and hydration reactions.
  • Biologically produced chemicals, such as those produced by lichens and mosses, can also break down rocks.


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