Alternative Methods of Extracting Metals (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
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13 questions from this quiz
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Practise the questions
13 questions from this quiz
Why is copper used in electronics?
Why is copper used in electronics?
Excellent electrical conductivity
What type of natural resource is copper?
What type of natural resource is copper?
Finite
What is the key difference between high-grade and low-grade copper ores?
What is the key difference between high-grade and low-grade copper ores?
Percentage of copper content
What does phytomining use to extract copper?
What does phytomining use to extract copper?
Plants
In phytomining, what do plants absorb from the soil?
In phytomining, what do plants absorb from the soil?
Minerals including copper compounds
After burning plants in phytomining, what does the ash contain?
After burning plants in phytomining, what does the ash contain?
Higher concentration of copper compounds
Why is phytomining less harmful to the environment?
Why is phytomining less harmful to the environment?
Carbon from burning offset by photosynthesis
What is a disadvantage of phytomining?
What is a disadvantage of phytomining?
Slow process requiring plant growth time
What does bioleaching use to extract copper ions?
What does bioleaching use to extract copper ions?
Bacteria
What is the solution called that bacteria produce in bioleaching?
What is the solution called that bacteria produce in bioleaching?
Leachate
What is an advantage of bioleaching regarding carbon?
What is an advantage of bioleaching regarding carbon?
Produces no carbon emissions
In electrolysis, where are positively charged copper ions attracted?
In electrolysis, where are positively charged copper ions attracted?
Negative electrode
Why can iron displace copper from copper compounds?
Why can iron displace copper from copper compounds?
Iron is more reactive than copper