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17 Cards in this Set
- Front
- Back
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What is acid precipitation? Howis it caused?
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Rain, Snow, Fog caused by humans
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The pH Scale: The lower the number (closer to 0) the more ______ it is; the higher the more ____ it is
what is neutral? ex? |
The pH scale measures how acidic or basic a substance is. The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acidic.
The pH scale is logarithmic and as a result, each whole pH value below 7 is ten times more acidic than the next higher value. For example, pH 4 is ten times more acidic than pH 5 and 100 times (10 times 10) more acidic than pH 6. milk is neutral basic=alkaline |
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CO2 + H2O + Suns Energy = ____
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CH2O (photosynthesis)
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reduced carbon compounds are_____ bc they have _____ in them from _____
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combustible; energy; the sun
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Carbohydrates are ____, ______, _____
3 examples are: |
carbons, water, and energy
1. sugar 2. cellulose 3. starch |
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Sulfur bonds with Iron to form?
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Iron Pyrite (FeS2), also known as fool's gold and is contaminated in coal
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if you burn contaminated coal (iron pyrite), the sulfur in the coal is burned and oxidized into
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SO3
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Once SO3 is oxidized you get
FeS2 (burned) ---> ____ + _____ +______ (as water vapor in atmosphere) ----> _____ |
CO2 + SO3 + H2O ----> H2SO4
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H2SO4 is?
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Sulfuric Acid
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how do you get sulfuric acid?
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SO3 mixes with the water vapor in atmosphere (H2O)
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What is buffering?
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chemical compound that resists change in pH
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HCO3 (-) is what?
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Ion that stabilizes the pH number, keeping it around 7.5, it is a BICARBONATE
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HCO3 (-) is a bicarbonate that comes from ______ if it is in the soil
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Limestone, neutralizes the acid rain
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When you burn sulfur the first oxidized state is _____? And it is the stuff that come out of?
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SO2-> smoke stacks (sulfur dioxide)
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SO2 mixes with H2O in the atmosphere yielding ______ ----> _____
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SO3 (sulfur trioxide, ins state)-----> H2SO4
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Calcium Sulfate is?
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Gypsum
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Scrubbers use ______ and _______ to clean coal
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gets rid of sulfur dioxide SO2 by using limestone and calcium carbonate (buffering reaction)
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