National League for Nursing (NLN PAX) Practice Exam 2025 – All-in-One Resource to Excel in Your Nursing Admission Test!

Question: 1 / 495

Which instrument is used to measure the amount of heat exchanged in a system?

Thermometer

Calorimeter

The calorimeter is specifically designed to measure the amount of heat exchanged in a system, making it the correct choice for this question. It works by allowing scientists to conduct controlled experiments where they can observe heat transfer in chemical reactions or physical processes. By measuring temperature changes within the calorimeter, one can calculate the heat absorbed or released by the substance being studied.

In contrast, a thermometer primarily measures temperature, which is distinct from measuring heat exchange. It does not provide information about the total heat transferred in a process. Similarly, a barometer measures atmospheric pressure, and a hydrometer is used for determining the specific gravity of liquids. Neither of these instruments relates to measuring heat exchange in a system, further clarifying why the calorimeter is the appropriate answer in this context.

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Barometer

Hydrometer

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