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exothermic and endothermic reactions - Coggle Diagram
exothermic and endothermic reactions
ENERGY TRANSFER
Endothermic reaction
energy taken from the surroundings
temperature of the surroundings decrease
everyday uses: sports injury packs
examples
thermal decomposition
citric acid and sodium hydrogencarbonate
conservation of energy
overall amount everyday does not change
Exothermic reaction
energy transferred to the surroundings
temperature of surroundings increases
everyday uses: hand warmers
examples:
neutralisation
combustions
many oxidation reactions
REACTION PROFILES
reaction profiles show energy changes
endothermic
exothermic
chemical reactions take place when the reacting particles collide with sufficient energy
