Question 8 Of the atoms below,
is the most electronegative.

Select one:
а. Са
b. He
c. F
d. Cs

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.