Question detail
Rechargeable battery check. In Energy transfer during exothermic and endothermic reactions, an external electrical current is supplied. Which conclusion best supports temperature change?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Exothermic and endothermic reactions
Question
- A. Rechargeable battery check: The chemical reactions can be reversed during recharging.
- B. The battery is non-rechargeable because one reactant is immediately used up.
- C. The current only measures temperature change.
- D. The current removes the need for an electrolyte.
Answer
The correct option is Rechargeable battery check: The chemical reactions can be reversed during recharging..
Explanation
The correct option is Rechargeable battery check: The chemical reactions can be reversed during recharging.. This scenario keeps the answer anchored to Energy transfer during exothermic and endothermic reactions in Exothermic and endothermic reactions. It supports temperature change without repeating the same wording as nearby Energy changes questions, and it separates exothermic, endothermic, activation-energy, bond-energy, cell and fuel-cell ideas.
Common mistake
Measuring Temperature Changes
Students often forget to account for the initial temperature of the water before adding the reactants, leading to inaccurate measurements of temperature change.
Always record the initial temperature of the water before starting the reaction to ensure accurate calculations of temperature change.
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