Question

1. approved eye protection devices (such as goggles) are worn in the laboratory to avoid eye strain to improve your vision only if you dont have corrective glasses any time chemicals, heat or glassware are used 4) if you wear contact lenses in the school laboratory, take them out before starting the lab you do not have to wear protective goggles advise your science instructor that you wear contact lenses keep the information to yourself 5) if you do not understand a direction or part of a lab procedure, you should figure it out as you do the lab try several methods until something works ask the instructor before proceeding skip it and go on to the next part

Explanation:

1. In a laboratory, approved eye - protection devices are worn to safeguard eyes from chemicals, heat, or glassware hazards.
2. Wearing contact lenses in the lab requires informing the instructor to take necessary precautions.
3. If a lab direction or procedure part is unclear, asking the instructor before proceeding ensures safety and correct execution.

Answer:

1. any time chemicals, heat or glassware are used
2. advise your science instructor that you wear contact lenses
3. ask the instructor before proceeding