MAP Safety and Compliance 4 — Questions and Answers
Question 1: A student is using a hot plate. After turning it off, how should they check if it is cool?
- Touch it quickly with a finger
- Hold a hand slightly above it to feel for heat (Correct answer)
- Pour water on it
- Assume it is cool right away
Correct answer: Hold a hand slightly above it to feel for heat
Feeling for radiating heat without contact avoids burns from a surface that looks cool.
Question 2: What is the main purpose of a Safety Data Sheet (SDS)?
- To list the price of a chemical
- To provide hazard, handling, and first-aid information for a chemical (Correct answer)
- To record student lab grades
- To show how to order lab supplies
Correct answer: To provide hazard, handling, and first-aid information for a chemical
An SDS gives detailed information about a chemical's hazards and safe handling.
Question 3: Which is the correct procedure when diluting an acid with water?
- Add water to the acid quickly
- Add acid slowly to water (Correct answer)
- Mix both at the same time in a sealed container
- Heat the acid first, then add water
Correct answer: Add acid slowly to water
Adding acid to water prevents dangerous splattering from rapid heat release.
Question 4: Why should students never eat or drink in a science lab?
- Food attracts insects
- Food or drinks could become contaminated with chemicals (Correct answer)
- It makes the floor sticky
- Teachers want students to stay hungry
Correct answer: Food or drinks could become contaminated with chemicals
Chemicals can contaminate food and drinks, leading to accidental ingestion.
Question 5: A small fire starts in a beaker on a lab table. What is often the safest first step if trained and directed?
- Throw water on it
- Cover the beaker to cut off oxygen and alert the teacher (Correct answer)
- Blow on it
- Carry the beaker outside
Correct answer: Cover the beaker to cut off oxygen and alert the teacher
Smothering a small container fire removes oxygen, and the teacher must be alerted right away.
Question 6: What should students do with leftover chemicals at the end of a lab?
- Pour them back into the original stock bottle
- Dispose of them as the teacher directs (Correct answer)
- Take them home
- Mix them all together in the sink
Correct answer: Dispose of them as the teacher directs
Proper disposal follows teacher instructions to prevent contamination and dangerous reactions.
Question 7: Which of these is the best reason to read the entire lab procedure before starting?
- To finish faster than other groups
- To identify safety hazards and needed steps in advance (Correct answer)
- To skip unnecessary steps
- To avoid writing a conclusion
Correct answer: To identify safety hazards and needed steps in advance
Reading ahead helps students anticipate hazards and follow steps correctly.
MAP Safety and Compliance 4
A student is using a hot plate.
After turning it off, how should they check if it is cool?