Kaiser Wrote:

MICk3Y Wrote:So in my biology class wee were discussing whether a baby gaining 10 pounds is a physical change or a chemical change. The definition of a chemical change in our books is "when the change made is irreversible". So I'm wondering, what does EP think this is?

in my chemistry class, a Quimical Change is a change that involves modifying the chemical composition of the sustance,

but that is a physical one anyways because a baby can lose those 10 pounds...

But those 10 pounds he loses probably wouldnt be the same ten pounds he gained, and some of the 10 pounds he gained would probably never be lost again
also yeah that also part of the definition, but i just included the part that confused me