Which of the following statements is true?

Question

Quizplus · Accepted Answer

In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in equilibrium.
Melting is the physical process in which a solid transitions in a liquid. This happens when the internal energy of the solid increases (usually due to the application of heat or pressure), which in turn increases the substance's temperature up to the melting point.
A phase diagram is a type of chart used to show conditions (pressure, temperature, volume, etc.) at which thermodynamically distinct phases (such as solid, liquid or gaseous states) occur and coexist at equilibrium.
You may use the phase diagram for water below as a visual reference for the different points of the phase changes, including the triple point.
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Which of the Following Statements Is True