2026 IGCSE - Chemical Energetics

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Last updated 10:29 PM on 5/20/26
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5 Terms

1
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An exothermic reaction transfers thermal energy to the surroundings leading to…

increase in the temperature of the surroundings

2
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An endothermic reaction takes in thermal energy from the surroundings leading to a…

decrease in the temperature of the surroundings

3
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Activation energy, Ea, is…

the minimum energy that colliding particles must have to react

4
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Bond breaking is an __________ process.

endothermic

5
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Bond making is an ___________ process.

exothermic