Chemistry- air and water

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What is fractional distillation?
Separates mixtures by heating in a big cylinder, they condense off at different heights (different boiling points)
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Oxides
Made by reacting with oxygen.
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All aklali's are bases...
... but not all bases are alkali's.
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Water treatment- Water filters:
Removes calcium, magnesium, copper, reduces bacteria.
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Water treatment- Desalination
Makes water pure- boil water.
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Water treatment- Fluoride
Reduces cavities in teeth, causes white marks on teeth, reduces tooth decay.
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Rust is?
IRON oxide.
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Cause of rust
Air and water.
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Preventing rust:
Painting, oiling, plastic, grease, less reactive metal, or more reactive metal.
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Hard water caused by
Mg or Ca ions.
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Hard water causes
blockage in pipes, gross stuff in kettle.
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Other cards in this set

Card 2

Front

Made by reacting with oxygen.

Back

Oxides

Card 3

Front

... but not all bases are alkali's.

Back

Preview of the back of card 3

Card 4

Front

Removes calcium, magnesium, copper, reduces bacteria.

Back

Preview of the back of card 4

Card 5

Front

Makes water pure- boil water.

Back

Preview of the back of card 5
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