Exothermic
Exothermic process: a change that releases heat.
This pneumonic will help you remember what Exothermic means:
EXothermic = EXit
This means that the heat exits the reaction and warms up the surroundings which we feel.
This pneumonic will help you remember what Exothermic means:
EXothermic = EXit
This means that the heat exits the reaction and warms up the surroundings which we feel.
Endothermic
Endothermic process: a change that requires (or absorbs) heat.
This pneumonic will help you remember what Endothermic means:
ENdothermic = ENter
This means that the heat enters the reaction or steals it away so that we don't feel it.
This pneumonic will help you remember what Endothermic means:
ENdothermic = ENter
This means that the heat enters the reaction or steals it away so that we don't feel it.
Activation Energy
Activation energy is the energy required to start a reaction.
Reactions don't start all by themselves. They need a nudge. So you have to add some energy. It can be in the form of fire, like a match. Or it could be a liquid that has more energy than a solid.
Reactions don't start all by themselves. They need a nudge. So you have to add some energy. It can be in the form of fire, like a match. Or it could be a liquid that has more energy than a solid.