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PLEASE HELP ME :(

When heating a test tube or flask,


A)it should remain capped.


B)an experimenter can briefly look directly into the tube to make observations.


C)it should remain in the test tube rack.


D)safety goggles should be worn for the duration of the experiment.

Respuesta :

D. Safety goggles should be worn for the duration of the experiment 
When doing experiments like that, you should always point the open end of the test tube away from you. Also, safe googles should be worn, so that if test tube explodes, it will be unlikely for you to be injured. The answer would likely be D!

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