C2 Chemistry - exothermic and endothermic reactions Flashcards Preview

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Flashcards in C2 Chemistry - exothermic and endothermic reactions Deck (8)
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1

what do exothermic reactions do?

transfer energy to the surroundings

2

what do endothermic reactions do?

reactions take in energy from surroundings

3

in exothermic reactions what energy is it transfered into the surroundings as?

heat energy

4

three examples of exothermic reactions?

combustion
oxidation
neutralisation

5

what are 2 examples of endothermic reactions?

electrolysis
thermal decomposition

6

what are reversible reactions?

the reaction one direction will be endothermic, the other will be exothermic

7

an example of reversible reactions?

decomposition of ammonium chloride

8

what happens in a reversible reaction of the decomposition of ammonium chloride?
forward and backward reactions

forward reaction = it decomposes when heated - energy must be taken from surroundings

backward reaction = energy is transfered to the surroundings when is happens