Question detail
Explain why new methods for extracting copper are necessary as high-grade copper ores become scarce.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using the Earth's resources and obtaining potable water
Question
Explain why new methods for extracting copper are necessary as high-grade copper ores become scarce.
Answer
New methods for extracting copper are necessary because high-grade copper ores are limited resources and becoming depleted. As these ores diminish, alternative extraction methods, such as using low-grade ores or recycling, are needed to ensure a sustainable supply of copper.
Explanation
A strong answer should directly address the approved learning objective to describe how copper can be obtained from solutions of copper compounds by displacement using scrap iron. (HT only). This question belongs to Alternative methods of extracting metals within Using the Earth's resources and obtaining potable water, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to HT only, and keeps the wording specific to AQA GCSE revision.
Common mistake
Confusing Displacement with Electrolysis
Students often confuse the process of obtaining copper from solutions of copper compounds by displacement using scrap iron with electrolysis.
Do not treat this as a general statement about HT only. Instead, answer by clearly linking the correction to describe how copper can be obtained from solutions of copper compounds by displacement using scrap iron. (HT only) in Alternative methods of extracting metals. This keeps the response inside Using the Earth's resources and obtaining potable water and prevents a vague or off-topic GCSE answer. The mistake to avoid is: students often confuse the process of obtaining copper from solutions of copper compounds by displacement using scrap iron with electrolysis.
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