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15 cards from this deck
Energy cannot be created or destroyed, only transferred
The chemical reaction being studied
Everything outside the reaction (container, environment)
Energy in reactants >>> energy in products
Increases
Combustion and neutralisation
Exothermic
Energy in products >>> energy in reactants
Decreases
Photosynthesis and thermal decomposition
Endothermic
Energy is released to the surroundings
Energy must be absorbed from the surroundings
Exothermic reaction
Endothermic reaction
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