Actually, last year's Chem AP course taught me the combustion stuff; the lead stuff I learned while helping my mom pick out a nice leaded glass vase; and the pyrex stuff I learned when I asked my mom, "hey mom, what's with all the glass bowls you have in the kitchen that say Pyrex on the bottom?"

But on a side note, I do plan to major in chemical engineering next year.
Goodman3eb Reviewed by Goodman3eb on . Glass Pipe QUESTION I found some a glass object that would be perfect to smoke out of, but i think that there is some kind of coating covering the glass. When I put a lighter under it, it gives off a black smoke, and leaves black ash that wipes off easily. I have tried boiling the glass, shaking in alcohol and salt, and washing, but it still gives off black smoke. Is there any way to completely remove this coating?? Rating: 5