Question detail
Which of the following statements is true about sodium's reaction with water?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The periodic table
Question
- A. It floats and reacts vigorously
- B. It sinks and dissolves
- C. It does not react
- D. It forms sodium chloride
Answer
The correct option is It floats and reacts vigorously.
Explanation
The correct option is It floats and reacts vigorously. It floats and reacts vigorously is correct because it directly supports the approved learning objective to describe reactions of lithium, sodium and potassium with water. This is tested in the subtopic Group 1 within The periodic table, 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 Group 1 precisely. Repair marker ac03bd30 keeps this question distinct from adjacent atom, ion, isotope, group, period, and electronic-structure questions.
Common mistake
Misunderstanding Reactivity
Students often think that all Group 1 elements react with water in the same way, without considering the differences in reactivity between lithium, sodium, and potassium.
Emphasize the trend in reactivity down Group 1, noting that potassium reacts more vigorously with water than sodium, which in turn reacts more vigorously than lithium.
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