Question detail
Explain why carbon is used to extract metals from their oxides when the metal is less reactive than carbon.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Reactivity of metals
Question
Explain why carbon is used to extract metals from their oxides when the metal is less reactive than carbon.
Answer
Carbon is used because it can reduce metal oxides to metals by removing oxygen. Since the metal is less reactive than carbon, carbon can effectively displace the metal from its oxide.
Explanation
This answer is strong as it provides a clear rationale for the use of carbon in the extraction process, linking the reactivity series to the extraction method. The question assesses the student's ability to apply their knowledge of reactivity and reduction.
Common mistake
Common Mistake in Writing Word Equations
Students often forget to include the correct products when writing word equations for extracting metals from metal oxides using carbon.
To fix this, students should practice identifying the metal and carbon dioxide as the products and ensure they write the equation in the correct format, e.g., 'Metal oxide + Carbon → Metal + Carbon dioxide'.
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