Question

if you wear contact lenses in the school laboratory
1 point
○ take them out before starting the lab
○ you do not have to wear protective goggles
○ inform your instructor
○ keep the information to yourself

if you do not understand a direction or part of lab, you should;
1 point
○ figure it out as you complete the lab
○ try several methods until something works
○ ask the instructor before proceeding
○ skip it and move on

after completing an experiment, all chemical waste should be:
1 point
○ left at your lab station for the next class
○ disposed of according to your instructor’s directions
○ dumped in the sink
○ taken home

Explanation:

1. For contact lenses in the lab: Chemicals can get trapped under lenses, causing injury, so they must be removed first.
2. For unclear lab directions: Proceeding without understanding risks accidents, so ask the instructor first.
3. For chemical waste: Improper disposal risks hazards, so follow the instructor's guidelines.

Answer:

1. take them out before starting the lab
2. ask the instructor before proceeding
3. disposed of according to your instructor's directions