Lloyd’s lab partner is looking down into a test tube while he heats the contents by using a flame. Which action should Lloyd recommend to his partner if heating must continue?

A test tube being heated can suddenly spit or eject hot liquid, so its opening should never point toward anyone. Lloyd should move it so the opening faces away from all students. Goggles are important, but they do not make looking into the opening safe, and a test tube should not be covered while it is being heated.

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