C3: Energy (Foods and Chemical Reactions)

Hey, here is a document mainly for students taking AQA Additional Science. It contains information from the C3 (chemistry) section. It has information on energy from food and energy in chemical reactions. I hope this helps you to revise! Please rate and comment on how to improve :D

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C3: Energy in Chemical Reactions

Food

Knowing the amount of energy involved in chemical reactions is
useful so that resources are used efficiently and economically.

It is possible to measure the amount of energy experimentally or
to calculate it.

Controlling the amount of energy intake in our diet is important…

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In an exothermic reaction, the energy released from forming new
bonds is greater than the energy needed to break existing bonds.

In an endothermic reaction, the energy needed to break existing
bonds is greater than the energy released from forming new
bonds.










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