Notes
Slide Show
Outline
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McGraw-Hill Online Learning Center Test
Watch acid rain movie using real time player movie.  Review the animation.  Click here for on line quiz and movie.  McGraw-Hill Online Learning Center Test<BLURT>
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Click on the links below for animations and slideshows.
http://www.epa.gov/acidrain/site_students/index.html

http://www.nasa.gov/vision/earth/environment/acid_rain.html
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Acid Rain in the news
Stories about acid rain are common in print and on television. Below are two recent news items that describe the effects of acid rain on the environment.
Click on link for more stories and graphics and current research
http://www.classzone.com/books/earth_science/terc/content/investigations/es1807/es1807page01.cfm?chapter_no=investigation
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Our changing planet – video movie
  • http://earth.rice.edu/mtpe/bio/biosphere/hot/OCP08_AcidRain.mov
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Acid Rain
This tutorial explores the effects of fossil fuel burning on the pH of rainwater, as well as the resulting environmental and industrial consequences. Includes practice exercises.
  • http://www.wwnorton.com/chemistry/tutorials/interface.swf?chapter=chapter_16&folder=acid_rain
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The effects of acid rain on statues
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LICHENS
and
POLLUTION

Bioindicators
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Review characteristics
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Taste bud locations
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Acids have a sour taste.
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Examples of acidic substances
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Examples of acidic substances
http://www.chem.uiuc.edu/webFunChem/AcidBaseRxns/Acids.htm
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Bases have a bitter taste!
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Example of basic (alkaline) substances
http://www.chem.uiuc.edu/webFunChem/AcidBaseRxns/base.htm
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Bases feel slippery when wet.  Soap is basic
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Antacid – contains Mg(OH)2
“base”
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Acids are corrosive !
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Litmus Test
Blue to Red = Acid
Red to Blue = Base

http://www.chem.uiuc.edu/webFunChem/AcidBaseRxns/Litmus.htm
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Miami Museum of Science-pH Panel
click on link for interactivity pH meter
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Sodium Hydroxide (NaOH)
pH paper = 12 – 13 (base)
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pH indicator paper = “1-2”
strong acid
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Sodium Hydroxide (NaOH)
red to blue = base
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Distilled Water
No change in either litmus paper
pH paper = 7 (neutral)
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Salt water solution
Litmus paper no color change
pH paper = 7 (neutral)
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Indicator Gallery
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Phenolphthalein
pink in base
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Bromothymol Blue indicator
yellowish = acid
blue = base
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Phenol Red indicator
Orange = acid
Red Pink = base
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Universal Indicator
color varies over range of pH
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The pH Scale

 Click on link for interactive quiz to order items from low (acidic) to high (basic) pH. Pure water has a neutral pH.
  • http://www.quia.com/servlets/quia.activities.common.ActivityPlayer?AP_rand=66534207
  • &AP_activityType=11&AP_urlId=1975&AP_continuePlay=true&id=1975
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