Question

if you do not understand a direction or part of a lab procedure, you should 2 points 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 other: never leave a lit burner unattended. 2 points true false laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present. * 2 points true false

Explanation:

• For the first question, in a lab, safety and proper procedure are crucial. Guessing (figuring it out as you do the lab or trying random methods) can lead to errors or accidents. Skipping is also not a good option as it may affect the experiment's integrity. Asking the instructor ensures clarity and safety.
• For the second statement, leaving a lit burner unattended is a major safety hazard as it can cause fires or other accidents.
• For the third statement, starting lab work without the instructor present is unsafe as there may be unforeseen issues or incorrect set - ups that the instructor's supervision can prevent.

Answer:

• First question: ask the instructor before proceeding.
• Second question: True.
• Third question: False.