Answer:
both sugar and phosphate molecules
It's a chemical change because it's changing the object's property.

The Balanced equation will be :

The Coefficients are :
_____________________________

Most atoms do not. For those atoms that do not have a full valence shell (which usually would contain eight electrons, except for hydrogen and helium, where it would contain two), something has to change. So nature's tendency toward a full valence shell will lead to one of two things: The gain or loss of electrons.