What does sensible heat refer to in a thermodynamic context?

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Sensible heat refers to heat that you can sense. In thermodynamics, this is the heat that causes a change in temperature in a substance without changing its state (for example, from solid to liquid or liquid to gas). When heat is added to or removed from a substance, if the temperature changes and can be measured, this is classified as sensible heat.

For example, when you heat water on a stove, the temperature of the water goes up as you add energy through sensible heat. If the water were to reach its boiling point and start turning to steam, the heat involved in that process would no longer be considered sensible heat, as it would be associated with a phase change rather than a temperature change.

The other options are not aligned with the concept of sensible heat; they either refer to heat that is not detectable, heat associated with phase changes, or heat loss, none of which define sensible heat accurately.

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