Question

instructions: in each of the following situations, write safe if the proper safety procedures are being followed and unsafe if they are not. then, give a reason for your answer based on the lab safety rules.

1. situation: gina is thirsty. she rinses a beaker with water, refills it with water, and takes a drink.

o answer:
o reason:

1. situation: the printed directions in the lab book tell a student to pour a small amount of hydrochloric acid into a beaker. jamal puts on safety goggles before pouring the acid.

o answer:
o reason:

1. situation: it is a warm day in the lab. anna slips off her closed - toe shoes and walks barefoot to the sink to clean her glassware.

o answer:
o reason:

1. situation: while heating a substance in a test tube, maria makes sure the mouth of the tube is pointed away from herself and her lab partner.

o answer:
reason:

1. situation: during an experiment, lindsey decides to mix two chemicals that the lab procedure does not say to mix, because she is curious about what will happen.

answer:
reason:

Explanation:

1. Lab - use glassware is not for drinking. Gina's action violates safety rules.
2. Wearing safety goggles before handling acid follows safety protocol.
3. Walking bare - foot in a lab is dangerous as broken glass or spills can harm feet.
4. Pointing the test - tube mouth away from people during heating is a proper safety measure.
5. Mixing chemicals not specified in the procedure can lead to unknown and potentially dangerous reactions.

Answer:

1. Answer: UNSAFE

Reason: Lab glassware is not for drinking.

1. Answer: SAFE

Reason: Wearing safety goggles when handling acid is proper.

1. Answer: UNSAFE

Reason: Walking bare - foot in the lab is a safety hazard.

1. Answer: SAFE

Reason: Pointing test - tube away from people during heating is safe.

1. Answer: UNSAFE

Reason: Mixing non - specified chemicals is dangerous.