00:01
This next question wants you to refer back to what you answered in question 11 and define whether or not the spontaneous processes are exothermic or endothermic, and whether or not the non -spontaneous processes are exothermic or endothermic.
00:19
You may have some difficulty in defining whether or not the processes that you made up are exothermic or endothermic, because in some cases they may not.
00:31
Be either or you may not have enough information associated with the process to determine whether or not it is endothermic or exothermic.
00:42
Just remember that during an exothermic process heat is released and during an endothermic process heat is absorbed.
00:50
You will probably be able to do this for maybe half or a few more of the spontaneous and non -spontaneous processes that you listed and you will also probably notice that the ones that are spontaneous are more likely to be exothermic, and the ones that are non -spontaneous are more likely to be endothermic.
01:14
Burning of wood is exothermic.
01:17
Releasing air from a tire is actually endothermic.
01:21
Warming of your home in the hot sun is endothermic as it absorbs heat from the sun.
01:27
Rain falling from the sky goes to a lower potential energy state, so it's exothermic...