Chemistry - C5 Notes

Exothermic and Endothermic Reactions

• In an exothermic reaction, heat is transferred to the surroundings
• Two different tyoes of reactions which are exothermic are neutralisation reactions and oxidation reactions
• An endothermic reaction takes in energy from the surroundings
• Thermal decomposition of calcium carbonate - CaCO3 (+heat) -> CO2 + CaO
• The purpose of putting cotton wool in the beaker is to give more insulation
• Activation energy is the initial rise in energy…