Question detail
For Using electrolysis to extract metals, which electrolysis focus answer best supports this Unit 4.4 objective: Describe aluminium oxide as the aluminium compound used in extraction?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Electrolysis
Question
- A. It is the most stable aluminium compound at high temperature - correct electrolysis focus for aluminium oxide
- B. Wrong electrolysis focus: confuses aluminium oxide with a nearby Unit 4.4 chemical change idea
- C. Wrong particle check: uses the wrong ion, electrode, acid-base term, or product for Using electrolysis to extract metals
- D. Wrong reaction link: does not support Describe aluminium oxide as the aluminium compound used in extraction
Answer
The correct option is It is the most stable aluminium compound at high temperature - correct electrolysis focus for aluminium oxide.
Explanation
The correct option is "It is the most stable aluminium compound at high temperature - correct electrolysis focus for aluminium oxide" because it supports the approved learning objective: Describe aluminium oxide as the aluminium compound used in extraction. The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for Using electrolysis to extract metals.
Common mistake
Confusing Aluminium Oxide with Other Compounds
Students often confuse aluminium oxide with other aluminium compounds, such as aluminium chloride, when discussing its use in extraction.
To fix this, students should focus on the specific properties and formula of aluminium oxide (Al2O3) and understand its role in the extraction process.
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