Question

which behaviors are most likely to be prohibited in a safety contract?
talking during the lab
modifying the lab procedure without the teachers permission
leaving active heat sources unattended
calling 911 during an emergency
using laboratory chemicals for practical jokes or tricks

Explanation:

• Talking during the lab can be distracting but is not always prohibited in a safety contract.
• Modifying the lab procedure without permission can lead to unsafe conditions as the procedure is designed for safety.
• Leaving active heat sources unattended is a safety hazard as it can cause fires or burns.
• Calling 911 during an emergency is a correct and encouraged action, not prohibited.
• Using laboratory chemicals for practical jokes or tricks is extremely dangerous as chemicals can be harmful.

Answer:

modifying the lab procedure without the teacher’s permission, leaving active heat sources unattended, using laboratory chemicals for practical jokes or tricks