Question detail

Which comparison keeps temperature change separate from a nearby Unit 4.5 idea?

Try the question, check the answer, then read the explanation to understand the curriculum point.

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At a glance

MCQ

Type

practice

Style

Topic

Exothermic and endothermic reactions

Question

A. temperature change: correct Unit 4.5 answer for Energy transfer during exothermic and endothermic reactions
B. Incorrect comparison: says the two nearby ideas mean the same thing
C. Incorrect comparison: uses the same evidence for exothermic and endothermic cases
D. Incorrect comparison: ignores the direction of energy transfer

Answer

The correct option is temperature change: correct Unit 4.5 answer for Energy transfer during exothermic and endothermic reactions.

Explanation

The correct option is temperature change: correct Unit 4.5 answer for Energy transfer during exothermic and endothermic reactions. It directly supports the approved learning objective to describe the required practical to investigate variables that affect temperature changes in reacting solutions such as acid plus metal, acid plus carbonate, neutralisation and displacement reactions. (AT 1, AT 3, AT 5, AT 6). This comparison version keeps the answer anchored to Energy transfer during exothermic and endothermic reactions within Exothermic and endothermic reactions, and avoids mixing energy transfer, reaction profiles, activation energy, chemical cells, fuel cells, exothermic reactions and endothermic reactions unless the objective names them.

Common mistake

Misunderstanding the Required Practical

Students often confuse the variables affecting temperature changes in the required practical, thinking that only one type of reaction (like neutralisation) is investigated.

Emphasize that the practical involves multiple types of reactions, including acid plus metal, acid plus carbonate, and displacement reactions, and that each can affect temperature changes.

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For Energy transfer during exothermic and endothermic reactions, which answer best supports this AQA GCSE Chemistry Unit 4.5 objective: Describe the required practical to investigate variables that affect temperature changes in reacting solutions such as acid plus metal, acid plus carbonate, neutralisation and displacement reactions. (AT 1, AT 3, AT 5, AT 6)?