What is the energy of a photon that emits a light of frequency 4.47 x 10^14 Hz? A. 6.71 x 10^-19 J
B. 6.75 x 10^-19 J
c. 1.34 x 10^-19 J
D. 2.96 x 10^-19 J

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.

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other