Is it okay to use imperfect glassware in science? (i.e. beakers and test tubes that are chipped or cracked) If not, why?
No. If glass is chipped or cracked, the structural integrity of the glass has been jeopardized, meaning it could easily crack, break or burst under extreme conditions such as heating by a Bunsen burner.
Where can you find all your lab equipment?
In the right cupboard of your lab bench. (There is a list of all the equipment that should be in there and pictures)
Pour chemicals down the sink without asking my teacher?
No, never pour anything down the sink without asking your teacher. Even though the waste goes to water treatment plants, they cannot get rid of everything!
If one is to handle hot beakers or flasks in a lab, how should this be done?
By using rubber tongs