C7 Energy Changed Flashcards
What is an exothermic reaction
A reaction that releases heat
What are 2 examples of an exothermic reaction
Neutralisation and combustion
What is an endothermic reaction
A reaction that takes in heat
2 examples of an endothermic reaction
Electrolysis and first stages of photosynthesis
What is the “law of conversation of energy”
1) changes in heat content being measured with a thermometer
2) the overall all amount of energy does not change but conserved
What is activation energy
The minimum amount of energy required for a collision to be successful
What is an energy profile
Graphical representations of the energy and progress of reaction of a reaction
What is bond breaking and bond making. endothermic or exothermic
Bond breaking is endothermic
Bond making is exothermic
Why for an energy profile for an endothermic reaction, is the product higher then the reactant
The products have more energy then the reactant