Practice Quiz

NAEP Science Grade 12

Category - Science

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When propane gas reacts with oxygen in the air to form carbon dioxide and water, heat is released. What is the source of this heat energy?
  1. The kinetic energy of the oxygen
  2. The kinetic energy of the propane
  3. The nuclear energy stored in the oxygen and propane
  4. The chemical energy stored in the oxygen and propane
Explanation
Answer: D - The chemical energy stored in the oxygen and propane.
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