Question detail
What does it mean when we say energy is conserved in chemical reactions?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Key ideas in chemistry
Question
- A. Energy is created during the reaction
- B. Energy is destroyed during the reaction
- C. Energy changes form but is not lost
- D. Energy is irrelevant to chemical reactions
Answer
The correct option is Energy changes form but is not lost. This answer is correct because it matches the approved learning objective to explain that matter is composed of tiny particles called atoms in the subtopic Universal chemistry ideas.
Explanation
The correct option is Energy changes form but is not lost. Energy changes form but is not lost is correct because it directly supports the approved learning objective to explain that matter is composed of tiny particles called atoms. This belongs to the subtopic Universal chemistry ideas within Key ideas in chemistry, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Universal chemistry ideas.
Common mistake
Misunderstanding Matter Composition
Students often think that matter can be made of larger particles or is continuous rather than discrete.
Emphasize that all matter is made up of tiny, indivisible particles called atoms, which are the fundamental building blocks.
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