Using VSEPR model, how is the electron arrangement about the central atom (electron-pair geometry) for CO2

The flowers in a flower arrangement are actually alive

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.