Multiple choice

After any reaction, the total energy of system and surroundings is ....

  1. equal to the total energy before the reaction

  2. greater than the energy before the reaction

  3. less than the energy before the reaction

  4. can not be determined
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Law of Conservation of Energy states that energy cannot be created or destroyed, so the total energy of a system and its surroundings remains constant.

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