Chemistry in the Environment Quiz 7
Terms
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- aquifer
- The largest portion of the water on earth is located in (glaciers/wells/oceans/rivers).
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- The largest portion of drinkable water on earth is located in (rivers/glaciers/oceans/bottles).
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- The price of (bottled water/gasoline) is higher.
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- When washing clothes, a scum sometimes forms on the surface of the soapy water due to the presence of ___________ in the water.
- -calcium?
- List three of the processes used in purification of water for drinking.
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- What do we mean when we say that some water is "hard"?
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- What can we do to "soften" the hard water?
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- Heavy metal ions can cause problems in our water supply. Name a heavy metal ion which is a common danger.
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Write formulas for compounds of the following elements
A)sodium and fluorine
b)lithium and sulfur
c)aluminum and oxygen -
a)
b)
c) - Name or describe an unusual property of water.
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- The ice sheets of one continent hold 70% of the fresh water on earth. Name that continent. (Hint: It's very cold there!)
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- The largest bodies of fresh water are several large lakes. Name one of the great ones.
- Lake Superior, Lake Erie
- What's the name of that aquifer which lies under Nebraska, Kansas, and Oklahoma?
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Name the following compounds:
a)C5H12
b)HI
c)C4H10 - -
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Draw structural formulas for:
a)methane
b)propane
c)hexane - -
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Draw "stick" formulas for:
a)propane
b)octane
c)ethane
d)decane - -
- Give another appropriate name for compound 2-a, the organic chemical name of which is methane.
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- In general, you could carry more potential energy in your gas tank as (propane/octane).
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- A certain hydrocarbon atom contained 18 carbons. How many hydrogens were present in the formula?
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- In general, you'd prefer to have complete combustion of your hydrocarbon furnace fuel. Why?
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- What is the safest fuel for heating your home?
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- What is the most dangerous fuel for generating electricity?
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- Just what is it that makes a candle glow?
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- What's the difference between a Diesel engine and an internal combustion engine?
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- In what way is a two-cycle engine better than a four-cycle engine?
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- In what way is a two-cycle engine worse than a four-cycle engine?
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