exothermic endothermic

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6 Terms

1
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Exothermic

surroundings feel warmer

  • more energy = released than absorbed


2
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endothermic

surroundings feel cooler

  • chemical reaction that absorbs energy from its surroundings.


3
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energy

may be relased as

heat

sound

light

movement

4
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Exothermic eg

burning match - Heat moves from flame to air

burning match = exothermic reac

5
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breaking bonds

  • energy is absorbed when chemical bonds are broken.

  • Energy is released when bonds form.

  • that absorb more energy from their surroundings than release it


6
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endothermic reaction eg

photosynthesis

cold packs

heat in food = absorbed

  • show how energy can be absorbed