Final answer:
Should the flame from a gas burner sputter, go out, or gas is smelled, immediately turn off the gas, inform the teacher, and do not relight until it's safe. Work in a well ventilated area, wear safety goggles, and never leave open flames unattended. Safety always comes first.
Step-by-step explanation:
When using a gas burner in the lab and you encounter issues such as the flame sputtering, going out, or smelling gas, safety should be your top priority. Firstly, if you smell gas or notice an irregularity with the flame, you should immediately turn off the gas supply. Alert your teacher or the lab supervisor at once. If the flame goes out, you must also turn off the gas supply to prevent gas build-up, which can be potentially hazardous. In the event of any of these situations, do not attempt to relight the burner until the issue has been resolved and it has been deemed safe to do so by your instructor.
It's crucial to always work in a well ventilated area when using an open flame to ensure that any gas that does escape is quickly dissipated. Remember to tie back all loose hair and clothing before igniting the flame and to follow all safety instructions provided by the teacher, including the location and proper use of fire safety equipment in the laboratory.
Wearing safety goggles is imperative when working with flames to protect your eyes from any potential hazards. Moreover, you should never leave Bunsen burners and open flames unattended, as this can lead to accidents and fires. Being cautious and alert in the laboratory helps to ensure your safety and the safety of those around you.