High School

Old thermometers contained very small amounts of mercury. The mercury in the photo has a melting point of −38.8 °C. What can you conclude about the melting point of the mercury in old thermometers?

A. Its melting point can only be determined when the mercury is burned.
B. Its melting point changes as the mercury’s temperature changes.
C. Its melting point equals −38.8 °C because it is mercury.
D. Its melting point is less than −38.8 °C because its volume is smaller.

Answer :

The mercury in old thermometers has a Melting point of -38.8 °C. The correct answer is C.

Its melting point equals -38.8 °C because it is mercury.

The melting point of a substance refers to the temperature at which it changes from a solid to a liquid state.

In this case, the mercury in old thermometers has a melting point of -38.8 °C.

This means that when the temperature of the mercury reaches -38.8 °C, it will start to melt and turn into a liquid.

Since the question states that the mercury in the photo has a melting point of -38.8 °C, we can conclude that the melting point of the mercury in old thermometers is -38.8 °C.

Option C is the correct answer.

Learn more about Melting point here:

https://brainly.com/question/33848671

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