Wednesday, October 17, 2012

Acids and Bases with the PH Scale


In class we are getting ready to move on from just knowing how our eco-columns work, to how pollution elements effect both the carbon-dioxide oxygen cycle and the water cycle.  Sounds complicated, but not so much.  We are focusing on three pollutants that are fairly common to the Pulaski area: Road Salt (winter is just around the corner...YIKES!), Acid Rain (using a water/vinegar solution), and Fertilizer (common house-plant fertilizer).  We will not be polluting our actual eco-columns, because they are still alive and well, but rather the three eco-columns we built specially for this experiment.  

That said, yesterday we tested the acidity level of seven commonly found household liquids  using litmus paper: tap water, coffee, Coke, liquid fertilizer, diluted vinegar  lemon juice, and lime juice   The goal was for our students to see how acidic or basic different liquids are, and to begin thinking how those liquids, in larger quantities could effect an environment.

Check out some of our activities below:







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