Question detail
Which of the following best describes a mixture?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes
Question
- A. A combination of two or more elements or compounds that are not chemically combined
- B. A combination of elements or compounds that are chemically bonded
- C. A single type of atom
- D. A pure substance with a fixed composition
Answer
The correct option is A combination of two or more elements or compounds that are not chemically combined.
Explanation
The correct option is A combination of two or more elements or compounds that are not chemically combined. A combination of two or more elements or compounds that are not chemically combined is correct because it directly supports the approved learning objective to describe chromatography as a separation technique for mixtures. This is tested in the subtopic Mixtures within A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes, so the reasoning must stay within AQA GCSE Chemistry 8462 Unit 4.1. The other options are weaker because they either confuse a nearby Chemistry concept, use the wrong subtopic context, or do not answer Mixtures precisely. Repair marker f1f0e6bd keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Chromatography
Students often think that chromatography can separate any type of mixture, including those that are not soluble in the chosen solvent.
Emphasize that chromatography is effective only for mixtures where the components are soluble in the solvent used.
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