Acid in the Water Cycle
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Transcript of Acid in the Water Cycle
![Page 1: Acid in the Water Cycle](https://reader030.fdocuments.net/reader030/viewer/2022032805/56813351550346895d9a5cef/html5/thumbnails/1.jpg)
Acid in the Water CycleSection 5.16
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Human Activities Can Alter the Environment
How are humans impacting the environment and how can we minimize the negative effect we have on ecosystems?
The Problems of the Earth: http://www.youtube.com/watch?v=3whBtkLueNQ
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Discuss!
What did you see in the video? What’s causing it?
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Can you name any Acidic Food?
How do you know it is “acidic”?
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Acidic Food Example
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Source of Acid Rain
Pollutants› Burning fossil › Nitrogen fertilizers
Pollutants in atmosphere combine with water droplet = acid rain
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Where does acid rain go? Water cycle!
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Consequences of Acid Rain Share your ideas Southern Europe, Eastern North
America, Indian and China (Asia)
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pH Scale
p – potenz, H – hydrogen Scale shows how strong acids are Pure water: pH=7 Anything with a pH<7 is acidic, while
ph>7 is basic Normal rain is 5.7, slightly acidic Acid rain: pH=?
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pH Measurement
pH indicators› Litmus paper
pH meter and probe
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Next class...
pH lab Technology? Lab report format Homework
› Introduction: Background Questions