Lab Safety Essentials (1991 ACS)
Test your knowledge on fundamental lab safety practices from the 1991 American Chemical Society video.
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Quiz Questions & Answers
Review every prompt, the correct responses, and helpful context to prep for your own run-through.
Question 1: When using a Bunsen burner, what characteristic indicates the flame is at its hottest and most efficient point for heating?
A blue flame with a lighter inner cone
A yellow flame with no inner cone
A deep red flame with a wide base
A flickering, large orange flame
Question 2: What condition describes a centrifuge that is vibrating excessively because the test tubes inside are not evenly distributed?
unbalanced
overheated
overloaded
malfunctioning
Question 3: What protective gear is specifically mentioned for shielding your hands when working with concentrated acids, bases, or other reactive chemicals?
gloves
apron
lab coat
safety glasses
Question 4: If you pay attention, use common sense, and follow safety rules, the chemistry laboratory can be safer than which everyday location?
a sports arena
your own home
your car
a public park
Question 5: When diluting concentrated sulfuric or phosphoric acid, what is the crucial safety rule regarding the order of mixing?
add the water to the acid
the order does not matter
mix them simultaneously
add the acid to the water
Question 6: When preparing to light a Bunsen burner with a match, what is the correct sequence to ensure gas does not escape unnecessarily?
Turn the gas on, then strike the match.
Strike the match, then immediately turn the gas on.
Turn the gas on, wait a moment, then strike the match.
Strike the match and turn on the gas at the same time.
Question 7: If you are using a centrifuge, and it starts to vibrate like a washing machine with an unbalanced load, what should you do to prevent it from falling off the benchtop?
Secure it with clamps to the bench.
Immediately turn it off and balance the test tubes.
Add more liquid to the test tubes.
Place heavy objects on top of it.