4
QuizMultiple Choice

The Processes of Science — Test

Question 4 • Chemistry

What is the best reason for a student to remove a dangling bracelet when heating test tubes of acidic solutions in a hot-water bath in a chemistry lab?

Answer
A
to minimize the chance the bracelet pulling over a test tube, causing a spill
B
to prevent misreading the temperature of the bath on a thermometer
C
to reduce the risk of burns from heat conducted through the metal
D
to avoid reactions of the metal with gases in the lab

Explanation

A dangling bracelet can catch on the equipment or bench and pull over a test tube, spilling the acidic solution. Removing it helps prevent a spill and possible chemical exposure. The main concern is not the bracelet reacting with lab gases or affecting the thermometer.

AI-written and checked against the verified answer.

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