Energetics 0.0 / 5 ? ChemistryEnergeticsIGCSEEdexcel Created by: AbbeyxCreated on: 11-10-15 15:19 What is an exothermic reaction? A reaction that gives out heat energy. 1 of 11 What is an endothermic reaction? A reaction that takes in heat energy. 2 of 11 What is the temperature change in an exothermic reaction? Rise of temperature 3 of 11 What is the temperature change in an endothermic reaction? Fall in temperature 4 of 11 Examples of exothermic reactions Neutralisation, displacement, combustion, respiration, magnesium + sulfuric acid 5 of 11 Examples of endothermic reactions Thermal decomposition, photosynthesis, dissolving of salts, sodium hydrogen carbonate + citric acid 6 of 11 What is enthalpy change? The amount of heat energy change 7 of 11 What is the enthalpy change for an exothermic reaction? Negative 8 of 11 What is the enthalpy change for an endothermic reaction? Positive 9 of 11 Is formation of new bonds endothermic or exothermic? Exothermic 10 of 11 Is breaking of bonds endothermic or exothermic? Endothermic 11 of 11
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