Question

1. never remove chemicals or other equipment from the laboratory *

true
false

1. chipped or cracked glassware is okay to use *

true
false

1. read all procedures thoroughly before entering the laboratory *

true
false

1. all unsupervised experiments are prohibited *

true
false

Explanation:

1. Removing chemicals or equipment from the lab is a safety - violation and can lead to hazards, so it's false to do so.
2. Chipped or cracked glassware can break further and cause injuries, so it's not okay to use.
3. Reading procedures thoroughly before entering the lab helps in safety and proper experiment execution.
4. Unsupervised experiments can be dangerous and are generally prohibited.

Answer:

1. True
2. False
3. True
4. True