Acid Rain

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Acid Rain
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What is acid rain?

• precipitation with a pH below 5.6

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What causes acid rain?

• Gases in the air chemically reacts with the water
  vapor or precipitation forming an acid.
• the gases come from burning fossil fuels
• -gases like nitrogen oxide, sulfur dioxide,
  carbon monoxide, etc

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How does acid rain affect ecosystems?

• Makes bodies of water more acidic.
• affects the organisms in the water.
• 2) Changes the pH of soil, causes problems for
  the plants.

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Other problems caused by acid rain

• Property damage
• damages paint finishes (cars)
• erodes structures
• corrodes metals

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Controlling acid rain

• Eliminate / reduce pollution, mostly emissions
  from cars, factories, power plants.
• International cooperation is needed

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Things you need to know about pH
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pH

• is a measure of the Hydrogen ions.
• uses a pH scale
• pH below 7 acid
• pH above 7 base (alkali)
• pH of 7 neutral

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How we measure pH

• pH paper easy to use
• pH meter gives accurate pH
• Litmus paper (red blue) just indicates if
  substance is an acid or base.
• Other indicators cabbage juice, some types of
  flower, etc

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Acids

• From 0 6 on pH scale
• are corrosive
• Taste sour
• Stronger acids are the lower pHs
• Ex battery acid, lemon juice, stomach acid

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Bases

• From 8 14 on pH scale
• Are corrosive
• Taste bitter
• Stronger bases are the higher pHs
• Ex ammonia, detergents, baking soda, etc