Alternative Methods of Extracting Metals (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes
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Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
Why is copper used in electronics?
Why is copper used in electronics?
It has excellent electrical conductivity
What type of resource is copper?
What type of resource is copper?
A finite natural resource
What does phytomining use to extract copper from low-grade ores?
What does phytomining use to extract copper from low-grade ores?
Plants
What do plants absorb from the soil during phytomining?
What do plants absorb from the soil during phytomining?
Copper compounds
What remains after plants are burnt in phytomining?
What remains after plants are burnt in phytomining?
Ash with higher concentration of copper
Why is phytomining less harmful to the environment?
Why is phytomining less harmful to the environment?
Carbon released offset by photosynthesis
What is a disadvantage of phytomining?
What is a disadvantage of phytomining?
It is a slow process
What does bioleaching use to extract copper from low-grade ores?
What does bioleaching use to extract copper from low-grade ores?
Bacteria
What do bacteria produce during bioleaching?
What do bacteria produce during bioleaching?
Leachate rich in copper ions
Why is bioleaching considered a green process?
Why is bioleaching considered a green process?
It produces no carbon emissions
During electrolysis, where are copper ions attracted?
During electrolysis, where are copper ions attracted?
To the negative electrode
Why can iron displace copper from copper compounds?
Why can iron displace copper from copper compounds?
Iron is more reactive than copper