Question detail
For Reactions of acids with metals, which reaction focus answer best supports this Unit 4.4 objective: Predict the salt produced when sulfuric acid reacts with a metal?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Reactions of acids
Question
- A. Metal + Sulfuric acid → Salt + Hydrogen - correct reaction focus for acid
- B. Wrong reaction focus: confuses acid with a nearby Unit 4.4 chemical change idea
- C. Wrong particle check: uses the wrong ion, electrode, acid-base term, or product for Reactions of acids with metals
- D. Wrong reaction link: does not support Predict the salt produced when sulfuric acid reacts with a metal
Answer
The correct option is Metal + Sulfuric acid → Salt + Hydrogen - correct reaction focus for acid.
Explanation
The correct option is Metal + Sulfuric acid → Salt + Hydrogen - correct reaction focus for acid. Metal + Sulfuric acid → Salt + Hydrogen - correct reaction focus for acid is correct because it directly supports the approved learning objective to predict the salt produced when sulfuric acid reacts with a metal. This reaction focus variant asks students to separate acid from similar Unit 4.4 chemical-change ideas. The reasoning belongs to Reactions of acids with metals within Reactions of acids, so it should not be confused with nearby ideas about acids, alkalis, bases, oxidation, reduction, displacement, reactivity, electrolysis, electrodes, ions, pH, or salt preparation unless those are named in the objective. Use the focus term acid to keep the answer aligned with AQA GCSE Chemistry 8462 Unit 4.4 Chemical changes. Keep acid, alkali and base distinct; keep oxidation and reduction distinct; do not mix reduction with displacement; keep electrolysis separate from electroplating; distinguish anode from cathode, positive ions from negative ions, oxidation state from ionic charge, and strong acid from concentrated acid. The other options are weaker because they either use the wrong reaction type, wrong ion, wrong electrode, wrong acid-base distinction, vague wording, or the wrong chemical-change context.
Common mistake
Common Mistake in Predicting Salts
Students often confuse the names of the salts produced from sulfuric acid reactions, mistakenly predicting salts like sodium sulfate instead of the correct salt, such as copper(II) sulfate.
To fix this, students should remember that the salt name is derived from the metal used in the reaction combined with the acid name. For sulfuric acid, the salt will always end in 'sulfate'.
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