🔥 ENERGY CHANGES

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Last updated 7:14 PM on 9/8/26
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8 Terms

1
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Give an example of an exothermic reaction.

Burning a fuel.

2
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What usually happens to the surroundings during an exothermic reaction?

The surroundings generally warm up because energy is released.

3
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What is an endothermic reaction?

A reaction in which more energy is absorbed than released.

4
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Give an example of an endothermic reaction.

Photosynthesis.

5
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What usually happens to the surroundings during an endothermic reaction?

The surroundings generally cool down because energy is absorbed by the reaction.

6
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What is the key difference between exothermic and endothermic reactions?

  • Exothermic → energy released

  • Endothermic → energy absorbed


7
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How can you identify an exothermic reaction experimentally?

If the temperature of the surroundings increases, energy is being released.

8
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How can you identify an endothermic reaction experimentally?

If the temperature of the surroundings decreases, energy is being absorbed.