Anybody who works on something with intent to make it good usually "pours their heart" into it. Otherwise, everything in this world would be pretty shitty.

"pouring one's heart" means releasing innermost feelings en masse, not putting forth a great deal of effort. An architect doesn't pour his heart out when designing a building and a chef doesn't pour his heart out when preparing a dish. I am amused beyond description by my comment being buried.

Most teenagers already know everything. It's their curse.

For a champion of science, and one critical of not paying attention, you don't appear to have listened yourself. Burning a solid is indeed a chemical change. You may be thinking of melting, which is only a physical change. Burning paper does not produce gaseous paper. It changes the lignin and whatnot in the paper into another chemical species. Therefore a chemical change. Be REALLY careful to check your facts for a smartarse post.

Hahahahaha! Slicing a piece of pie is a physical change! It's still pie, its substance is the same chemically. A chemical change is what happens when the substance's chemical bonds are changed, such as when items are burned or cooked. Dude, you are so wrong on that one, sorry.

Bzzt! You're all wrong! The answer was 42! =p For all attending though, a chemical change is brought about by changing a substance at the molecular level - in other words, via chemical reaction - into another one entirely. This can be achieved by processes such as dissolution (i.e. dissolving salt in water), chemical breakdown (i.e. redox, such as rusting), and combustion. A physical change does not change the chemical substance itself. This includes stuff such as mixtures (i.e. stirring flour into water), non-chemical interaction (i.e. nailing a 2x4), changes in substance form/state (i.e. gas vs liquid), or simple substance division (i.e. shattering a piece of glass). The biggest thing to note is that both the materials comprising both the starting and ending points of the change are the same, although they may look different. Burning a piece of paper is an obvious example of a chemical reaction. One more thing... @61: Musical careers have been around for thousands of years, with success ranging from lousy to well-to-do. To some degree, success in the modern era may be dependent on modern technology, but it isn't exactly the sole deciding factor. This is not to say that he shouldn't have been paying attention, mind you, but your logic for reasons to pay attention is shaky at best. BTW, the OP never said that he thought chemistry was boring either.

Oh yeah vehicles and computers and shit like that are important, but without an ARTIST to DESIGN them they wouldn't exist. Douchebag.