Practice Quiz

CLEP Chemistry Practice Test

Category - Chemistry

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Which of the following statements describes the difference between endothermic and exothermic chemical reactions?

  1. Energy is absorbed in endothermic reactions but is released in exothermic reactions.
  2. Energy is conserved in endothermic reactions but is not conserved in exothermic reactions.
  3. Endothermic reactions involve changes in the nucleus of an atom, but exothermic reactions do not involve changes in the nucleus.
  4. Endothermic reactions occur when electrons are shared between atoms, but exothermic reactions occur when electrons are transferred between atoms.
Explanation

Answer: A - Energy is absorbed in endothermic reactions but is released in exothermic reactions.

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