Imagine you are a science teacher, and your students are performing a flame test. This experiment involves the use of a Bunsen burner, which produces an open gas flame. What safety precautions should you discuss with your students before beginning the experiment?
Answers
Answer:
Explanation:
1)Place the Bunsen burner away from any overhead shelving, equipment or light fixtures by at least 12 inches.
2)Remove all papers, notebooks, combustible materials and excess chemicals from the area.
3)Tie-back any long hair, dangling jewelry, or loose clothing.
4)Inspect hose for cracks, holes, pinch points or any defect and ensure that the hose fits securely on the gas valve and the burner.
5)Replace all hoses found to have a defect before using.
6)Notify others in the laboratory that the burner will be in use.
7)Utilize a sparker/lighter with extended nozzle to ignite the burner. Never use a match to ignite a burner.
8)Have the sparker/lighter available before turning on the gas.
9)Adjust the flame by turning the collar to regulate air flow and produce an appropriate flame for the experiment (typically a medium blue flame).
10)Do not leave open flames unattended and never leave the laboratory while the burner is on.
11)Shut off gas when its use is complete.
12)Allow the burner to cool before handling. Ensure that the main gas valve is off before leaving the laboratory.
Answer:
Sample Response: For this experiment, students should wear a lab coat and safety eyewear. Students should not touch the flame. They need to keep loose clothing, jewelry, hair, and any flammable substances away from the flame.
Explanation:
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