A class is using marshmallows to demonstrate different chemicals’ properties by heating and cooling the marshmallows. Which student is practicing bad laboratory safety?

Marshmallows used in a laboratory may be exposed to chemicals or contaminated materials, so they should never be eaten. Using a Bunsen burner to roast them for eating is unsafe. Cleaning up after the activity, checking glassware for imperfections, and following the instructor’s disposal directions are appropriate safety practices.

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