C7.1 Exothermic and Endothermic reaction Flashcards
What are exothermic reactions?
➢ Where reacting chemicals transfer energy to their surroundings
What are endothermic reactions?
➢ Other reactions transfer energy from the surroundings to the reacting chemicals
What happens when a exothermic reaction takes place?
➢ There is a rise of temperature
What happens when an endothermic reaction happens?
➢ Temperature decreases in the surroundings
What is the most common example of an exothermic reaction?
➢ Combustion
What amount of energy do products of an exothermic reaction have compared with the reactants?
➢ Lower amount
What is an example of an endothermic reaction?
➢ Thermal decompostion
What amount of energy do products of an exothermic reaction have compared with the reactants?
➢ Higher energy content than reactants
