Question detail
For The reactivity series, which acid-base focus answer best supports this Unit 4.4 objective: Write balanced symbol equations for metal displacement reactions when formulae are supplied?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reactivity of metals
Question
- A. Magnesium displaces hydrogen and forms magnesium chloride. - correct acid-base focus for displacement
- B. Wrong acid-base focus: confuses displacement with a nearby Unit 4.4 chemical change idea
- C. Wrong particle check: uses the wrong ion, electrode, acid-base term, or product for The reactivity series
- D. Wrong reaction link: does not support Write balanced symbol equations for metal displacement reactions when formulae are supplied
Answer
The correct option is Magnesium displaces hydrogen and forms magnesium chloride. - correct acid-base focus for displacement.
Explanation
The correct option is "Magnesium displaces hydrogen and forms magnesium chloride. - correct acid-base focus for displacement" because it supports the approved learning objective: Write balanced symbol equations for metal displacement reactions when formulae are supplied. The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for The reactivity series.
Common mistake
Incorrect Balancing of Equations
Students often forget to balance the number of atoms on both sides of the equation when writing balanced symbol equations for metal displacement reactions.
To fix this, always count the number of atoms of each element on both sides of the equation and adjust coefficients to ensure they are equal.
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