Download 2 Types of Chemical Weathering Hydrolysis Oxidation

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Transcript
2 Types
of
Chemical Weathering
Chemical Process changes rocks and minerals into new substances
Hydrolysis
Oxidation
is
is
water dissolving the minerals
in
rocks
the reaction
of
OXYGEN with METALS
to
form
OXIDES
Acids
found in water
OXIDES weaken the rock
and
cause the rock to fall apart
(Carbonic acid)
Help speed up the process of dissolving
rocks
Example: iron oxide = RUST
Caverns
KARST Topography
result when
HYDROLYSIS
dissolves
Calcite
in
underground limestone
rocks
ACID RAIN
Oxidation Examples:
Caused by
Air pollution
Helps
Speed up
Chemical weathering
iron + oxygen = rust – iron oxide
silver + oxygen = tarnish
copper + oxygen = greenish color