Chemistry Unit 2.5 - Exothermic and Endothermic Reactions

Mind Map by , created almost 6 years ago

Mind Map on Chemistry Unit 2.5 - Exothermic and Endothermic Reactions, created by pondcott on 01/01/2014.

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Created by pondcott almost 6 years ago
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Chemistry Unit 2.5 - Exothermic and Endothermic Reactions
1 Chemical reactions involve energy transfers
1.1 Many chemical reactions involve the release of energy
1.2 For other chemical reactions, energy must be supplied
2 When chemical reactions occur, energy is transferred to or from the surroundings
3 Exothermic reaction
3.1 One that transfers energy to the surroundings
3.2 Examples include combustion, many oxidisation reactions and neutralisation
3.3 Everyday uses of exothermic reactions include self-heating cans (e.g. for coffee) and hand warmers
4 Endothermic reaction
4.1 One that takes in energy from the surroundings
4.2 Examples include thermal decompositions
4.3 Some sports-injury packs are based on endothermic reactions
5 If a reversible reaction is exothermic in one direction it is endothermic in the opposite direction
5.1 The same amount of energy is transferred in each case

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