Ammonium salts are used by farmers as nitrogenous fertilizers. calculate the percentage of ammonium ion in ammonium phosphate​

Do u have the n? or maybe the m?

Yes, endothermic means it turns cold. and some chemical changes include change of tempature.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.