AQA GCSE COMBINED SCIENCE TRILOGY
HIGHER TIER CHEMISTRY PAPER 2H 8
QUESTIONS AND ANSWERS
◉ Renewable resources reform at. Answer: A similar or faster rate
than we use them.
◉ Finite resources aren't. Answer: formed as quickly enough to be
considered replaceable.
◉ Name 4 finite resources:. Answer: Fossil Fuels,
Nuclear fuels,
Minerals,
Metals,
◉ What do people have to consider when considering finite
resources?. Answer: Social, economic and environmental effects of
extracting finite resources.
◉ What is sustainable development?. Answer: It is a approach to the
development that takes account of the neds of present society while
not damaging the lives of future generations.
,◉ Extracting resources can be unsustainable due to the. Answer:
amount of energy used and waste produced,
Processing the resources into useful materials such as glass or
bricks.
The energy usually comes from finite resources.
◉ Chemists develop and adapt processes so that's... Answer: Lower
amounts of finite resources are used and reduce damage to the
environment.
Catalysts are an example of saving resources.
◉ What is Bioleaching?. Answer: This uses bacterial that converts
copper compounds in the ore into soluble copper.
The leachate formed contains copper ions which can be extracted by
electrolysis or displacement.
◉ What is Phytomining?. Answer: This involves growing plants in
soil that contains copper, the plants cant use copper so it builds up
in the leaves.
, The leaves are then harvested, dried or burned. The ash contains
soluble copper compounds from which copper can be extracted by
electrolysis or displacement.
◉ What material is used to displace copper?. Answer: Scrap Iron.
◉ Traditional methods of copper mining are. Answer: damaging.
◉ What are the disadvantages to the new methods?. Answer: They
very slow.
◉ What are the advantages of recycling metals?. Answer: Recycling
metals uses much less energy than is needed to mine and extract
new metal.
It also conserves the finite amount of metal in the earth and
therefore cuts down on the amount of waste getting sent to landfill.
◉ How are metals recycled?. Answer: They are usually melting then
casting them into the shape of a new product.
◉ Glass recycling is useful as it. Answer: reduces the amount of
energy needed to make new glass.
HIGHER TIER CHEMISTRY PAPER 2H 8
QUESTIONS AND ANSWERS
◉ Renewable resources reform at. Answer: A similar or faster rate
than we use them.
◉ Finite resources aren't. Answer: formed as quickly enough to be
considered replaceable.
◉ Name 4 finite resources:. Answer: Fossil Fuels,
Nuclear fuels,
Minerals,
Metals,
◉ What do people have to consider when considering finite
resources?. Answer: Social, economic and environmental effects of
extracting finite resources.
◉ What is sustainable development?. Answer: It is a approach to the
development that takes account of the neds of present society while
not damaging the lives of future generations.
,◉ Extracting resources can be unsustainable due to the. Answer:
amount of energy used and waste produced,
Processing the resources into useful materials such as glass or
bricks.
The energy usually comes from finite resources.
◉ Chemists develop and adapt processes so that's... Answer: Lower
amounts of finite resources are used and reduce damage to the
environment.
Catalysts are an example of saving resources.
◉ What is Bioleaching?. Answer: This uses bacterial that converts
copper compounds in the ore into soluble copper.
The leachate formed contains copper ions which can be extracted by
electrolysis or displacement.
◉ What is Phytomining?. Answer: This involves growing plants in
soil that contains copper, the plants cant use copper so it builds up
in the leaves.
, The leaves are then harvested, dried or burned. The ash contains
soluble copper compounds from which copper can be extracted by
electrolysis or displacement.
◉ What material is used to displace copper?. Answer: Scrap Iron.
◉ Traditional methods of copper mining are. Answer: damaging.
◉ What are the disadvantages to the new methods?. Answer: They
very slow.
◉ What are the advantages of recycling metals?. Answer: Recycling
metals uses much less energy than is needed to mine and extract
new metal.
It also conserves the finite amount of metal in the earth and
therefore cuts down on the amount of waste getting sent to landfill.
◉ How are metals recycled?. Answer: They are usually melting then
casting them into the shape of a new product.
◉ Glass recycling is useful as it. Answer: reduces the amount of
energy needed to make new glass.
