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Note that your final mark will not be saved in the system.
Exothermic and endothermic reactions Categorise
Target Level
4-5
Running Total
0
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Attempt
1 of 1
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Exothermic reactions
Endothermic reactions
Products have greater energy than reactants
Energy released in forming bonds < energy required to break bonds
The temperature of the surroundings decreases
Used in hand warmers
Example: Thermal decomposition
Used in sports injury packs
Example: Combustion
Energy released in forming bonds > energy required to break bonds
Example: Citric acid + sodium hydrogencarbonate
Reactants have greater energy than products
The temperature of the surroundings increases
Example: Neutralisation