Infrared Spectroscopic Analysis Characteristic infrared absorptions of starting material (4-tert-butylcyclohexanone): wave number (cm-1) functional group type of vibration (stretch or bend)

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.

Its a hope this