If you are not certain of a lab procedure, ask questions before continuing.
Report all broken electrical equipment to the teacher and do not use it.
There is no need to wash your hands after handling chemicals.
You are allowed to remove chemicals from the classroom.
It is all right to perform unauthorized experiments.
Always read through the procedure of an experiment before starting to work.
All waste chemicals should be flushed down the drain.
It doesn't matter how you plug in electrical equipment, it all works the same way.
Always tie back long hair when working near an open flame.
If the lab will require a lot of time, you should bring food or drink along and eat it in the lab.