You’re heating a chemical in a test tube over a Bunsen burner. Which of the following actions should you take to be safe? Check all of the boxes that apply.

Pointing the test tube away from yourself helps prevent hot liquid or vapor from hitting you if it suddenly boils or splashes. Keep your lab-coat sleeves away from the flame so they do not catch fire. Do not touch the test tube to check its temperature, and do not lean over it; use a suitable method to observe it from a safe position.

AI-written and checked against the verified answer.