If you were going to be handling harmful chemicals in a lab, what safety equipment would you use to protect your eyes and face? A. chemical splash goggles

B. gloves

C. safety glasses

D. apron

They carry out the exchange of gases as we breathe ( oxygen and carbon dioxide).

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.