Lab Safety

Which picture shows the safest way to to detect an odor produced during an investigation?

• A

• B

• C

• D

Horseplay or practical jokes in the laboratory are...

• F. always against the rules

• G. okay if you are getting your work done

• H. not dangerous

• J. okay if you are finished

If you break a glass container in the lab, you should FIRST ---

• immediately tell the teacher

• gather the pieces of glass together

• wipe up any chemicals that spilled

• make sure to dispose of glass in the broken glass container

If a student gets a chemical splashed into an eye, what is the appropriate action to be taken by the student?

• wipe with a paper towel

• call 911

• have someone get the principal

• flush the eye with water at an eye wash station and notify the teacher

A student is not certain whether the liquid or the powder goes into the test tube first during a lab. What is the safest thing for the student to do?

• Skip that part of the experiment

• Look at the lab handout for the order

• Flip a coin to decide which one to put in first

• Do two trials, one with powder first and one with the liquid first

Josey is conducting a lab investigating the effects of acid rain. While reading the lab instructions, she notices the safety symbol shown here. What is the meaning of this safety symbol?

• Wear safety gloves while performing this experiment.

• Caution: Chemicals are corrosive.

• Wash your hands after handling chemicals in this lab.

• Caution: Chemicals in the experiment will be very hot.

All of the following are safe laboratory practices EXCEPT ---

• maintaining an organized table

• wearing safety goggles during experiments

• mixing chemicals before reading instructions

• washing hands thoroughly after completing an experiment

The day before the class is going to do a lab experiment, their teacher reminds them not to wear open toed shoes to school the next day. Which rationale best explains their teacher's request?

• to prevent spills of chemicals

• to prevent injury to toes or feet

• to keep them from getting tired feet

• to keep them grounded in case of shock

During a lab, a student cracks a clean, empty Erlenmeyer flask. It does not break, but it can no longer be used. What should the student do FIRST?

• Dispose of the broken glass in the trash can.

• Obtain a new Erlenmeyer flask.

• Wipe up spilled chemicals.

• Inform the teacher.

When finished with a lab, the last thing a student should do is ----

• wash hands

• tie back long hair

• clean all glassware

• turn off Bunsen burner