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Chemistry
Using resources
Using the Earth’s resources
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Renewable resources
can be replaced as quickly as they are used
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Fossil fuels
form much slower than they are being used
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Resources used for biofuels
Wood chips
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Humans use the earth's resources
1. Provide
warmth
2.
Shelter
3.
Food
4.
Transport
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Around
two-thirds
of the rubber used in the world is now
synthetic
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Human activities need to be
sustainable
We can meet our needs without preventing future generations from
meeting theirs
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Huge amounts of
metal
are extracted from the
Earth's crust
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Synthetic rubber
is produced using
crude oil
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If
metals
continue to be used at the current rate, they will
run out
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Chemistry's role in using resources
Artificial fertilizers
to grow more
food
Providing
safe drinking water
Processes like
phyto mining
and
bio leaching
to
extract metals
more
efficiently
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Metals are also a
finite
resource
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Natural rubber comes from the
sap
of a
tree
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Wood is a
renewable
resource
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Chemistry replacing natural resources with synthetic alternatives
Rubber
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Resources produced by agriculture and farming
Cotton
Trees for timber
or
fuel
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Fossil fuels
are a finite resource
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If fossil fuels continue to be used at the current rate, they will
run out
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What are the main sources of
finite
resource?
the
Earth’s
crust
oceans
atmosphere
What are the main uses of
finite
resources?
provide
energy
provide
useful materials
Give one example of finite resource.
Crude
oil
Which method of
extraction
uses
organisms
that absorb
metal compunds
?
phytomining
bioleaching
What are the main functions of
synthetic products
?
supplement
natural products
replace
natural products
What are
leachates
?
Copper-rich
solutions made during
bioleaching
What is
bioleaching
?
The use of
bacteria
to absorb
copper
compounds and make
leachates
A type of
metal
extraction
What is
phytomining?
A type of metal
extraction
Grow plants
which
absorb
metal ions through their roots
Plants are then
harvested
and
burnt
to produce
ash
that contains the
metal compound
What is
unsustainable development
?
Meets
the needs of
current generations
Without
compromising
the ability of
future generations
to meet their own
needs
What does the
agriculture
industry provides resources for?
Food
Timber
Clothing
Fuels
What is renewable resource?
Sustainable
: can be
removed
from the
environment
without
running out
Why might a tyre manufacturer choose to use synthetic rubber instead of natural rubber?
Properties
of
natural
rubber cannot be
controlled
Synthetic rubber is
easier
to make