Question detail
What is the process of burning harvested plants to produce ash containing metal compounds called, and why is this method used?
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
What is the process of burning harvested plants to produce ash containing metal compounds called, and why is this method used?
Answer
The process is called phytomining. It is used because it allows for the extraction of metal compounds from low-grade ores in an environmentally friendly way, utilizing plants to absorb metals from the soil.
Explanation
A strong answer should directly address the approved learning objective to explain how harvested plants are burned to produce ash containing metal compounds. (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
Misunderstanding Phytomining
Students often confuse phytomining with traditional mining methods, thinking both processes are the same.
Emphasize that phytomining uses plants to absorb metal compounds from soil, while traditional mining involves extracting ores directly from the earth.
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