Hot glass looks the same as cold glass . True. All chemicals in the lab are to be considered dangerous. False. Return all unused chemicals to their original containers. True. Work areas should be kept clean and tidy. False. Pipets are used to measure and dispense small amounts of liquids.
Not only does this make the glass harder to break, but if the glass is broken, the broken pieces stick to the PVB. This is why in movies — and in real life — shattered windshields look like a spider web of broken pieces that don't fall out, or if they do fall out, the whole windshield pops out in one piece.