Endothermic Reactions

* Dissolving ammonium chloride in water

* Reaction of thionyl chloride (SOCl2) with cobalt(II) sulfate heptahydrate

* Mixing water and ammonium nitrate

* Mixing water with potassium chloride

* Reacting ethanoic acid with sodium carbonate

* Photosynthesis (chlorophyll is used to react carbon dioxide plus water plus energy to make glucose and oxygen)

* Bacon into hot frying pan

* Electric blankets heat you up

* Endothermic frost forms on the outside of a beaker