MAP Safety and Compliance 5 — Questions and Answers
Question 1: In a lab, what does a symbol showing a flame typically indicate on a chemical label?
- The chemical is corrosive
- The chemical is flammable (Correct answer)
- The chemical is radioactive
- The chemical is harmless
Correct answer: The chemical is flammable
A flame pictogram warns that the substance can catch fire easily.
Question 2: During an outdoor field investigation, which practice best keeps students safe?
- Exploring alone to find more samples
- Staying with a partner or group and following teacher boundaries (Correct answer)
- Touching unknown plants and animals
- Leaving without telling anyone
Correct answer: Staying with a partner or group and following teacher boundaries
Working in groups within set boundaries reduces risk of injury or getting lost.
Question 3: Why should electrical cords in a lab be kept away from sinks and water?
- Water can damage the cord's color
- Water conducts electricity and increases shock risk (Correct answer)
- Cords tangle near water
- Sinks need to stay free for washing hands
Correct answer: Water conducts electricity and increases shock risk
Water can create a path for electric current, causing shock or short circuits.
Question 4: Which type of footwear is most appropriate for a science lab?
- Open-toed sandals
- Flip-flops
- Closed-toe shoes (Correct answer)
- Bare feet
Correct answer: Closed-toe shoes
Closed-toe shoes protect feet from spills and dropped glass.
Question 5: A student feels dizzy after working with a chemical. What should they do?
- Keep working to finish the lab
- Tell the teacher immediately and move to fresh air (Correct answer)
- Lie down on the lab floor
- Drink water from the lab faucet
Correct answer: Tell the teacher immediately and move to fresh air
Dizziness may signal exposure, so the teacher must be told and the student moved to fresh air.
Question 6: What is the purpose of a fume hood in a laboratory?
- To store glassware
- To remove harmful vapors from the work area (Correct answer)
- To keep chemicals cold
- To display lab results
Correct answer: To remove harmful vapors from the work area
A fume hood ventilates and removes toxic or irritating vapors away from people.
Question 7: When should students wash their hands during a lab activity?
- Only if they spill something
- Never, because gloves were worn
- At the end of the lab and after handling chemicals or living things (Correct answer)
- Only before the lab begins
Correct answer: At the end of the lab and after handling chemicals or living things
Washing hands after the lab removes residue from chemicals or organisms, even if gloves were worn.
MAP Safety and Compliance 5
In a lab, what does a symbol showing a flame typically indicate on a chemical label?