Question detail
Why do the chemical properties of substances in a mixture remain unchanged?
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. Because they do not react with each other
- B. Because they are chemically bonded
- C. Because they are all gases
- D. Because they are in a solid state
Answer
The correct option is Because they do not react with each other.
Explanation
The correct option is Because they do not react with each other. Because they do not react with each other is correct because it directly supports the approved learning objective to describe crystallisation as a separation technique for dissolved solids. 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 c8bb961b keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Crystallisation
Students often think that crystallisation can separate all types of mixtures, not just those with dissolved solids.
Remember that crystallisation specifically applies to separating dissolved solids from a solution, not all mixtures.
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