exothermic and endothermic reactions 0.0 / 5 ? ChemistryEnergy of reactions/Exothermic and endothermic reactionsGCSEAQA Created by: Daniella_72Created on: 12-11-22 11:39 what is the law of conservation of energy? energy cannot be created or destroyed 1 of 7 what is an exothermic reaction? a reaction that releases energy (temp of surrounding increase) 2 of 7 what is an endothermic reaction? a reaction where energy is absorbed (temp of surrounding decreases) 3 of 7 give an example for each time of reaction endothermic: photosynthesis (light energy is absorbed) or breaking of bonds exothermic: formation of bonds 4 of 7 what is activation energy? the minimum energy required for a reaction to take place (between reacting particles) 5 of 7 how do you calculate the overall energy change of a reaction? energy from bonds broken- energy from bonds formed 6 of 7 if the overall energy change is negative (e.g.-234) is the reaction endothermic or exothermic? exothermic, more energy is released from the bonds being formed than is used to break the bonds initially 7 of 7
Comments
No comments have yet been made