When fat comes in contact with sodium hydroxide, it produces soap and glycerin. Determine whether this is a physical change or a chemical change. Explain your answer.

Lina went in camping woods. while camping, she accidentally touched a strange planet. her hand immediately started itching, and her skin erupted in hives. after she gets home, her grandmother cooked some oatmeal, wrapped it in a cloth, and put it on lina affected hand. lina’s grandmother followed a traditional what remedy.