Question

1. eating hot cheetos is allowed in the lab *

true
false

1. hot glass looks the same as cold glass *

true
false

1. all chemicals in the lab are to be considered dangerous *

true
false

1. laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present

true
false

Explanation:

1. Eating in a lab is not allowed due to risk of contamination and chemical ingestion.
2. Hot glass does not have a visual - difference from cold glass, which can be a safety hazard.
3. All lab chemicals should be treated as dangerous because their properties may not be fully known or mislabeled.
4. Lab work should not start without the instructor present for safety and proper guidance.

Answer:

1. B. False
2. A. True
3. A. True
4. B. False