Please bear with me while I fumble through my explanation...I'm trying to find a book for my son (he's five, but the book could be on any level--I'd probably have to read it w/him anyway) that describes how things (in every day life) change on a molecular (I think) level. For example, what happens when water freezes...I mean he wants to know what happens specifically to the hydrogen and oxygen molecules; same thing for when water boils etc...hmm...I'm trying to think of more examples and coming up blank right now, but that's the gist of it.

If anyone has half a clue what I'm talking about that would be great! Even better if anyone has any suggestions!!

Thanks!