Answer :
The melting point was used for the slider.
Define melting point ?
The temperature at which a substance transitions from a solid to a liquid state is known as its melting point (or, less frequently, liquefaction point). The solid and liquid phases are in balance at the melting point. Pressure affects a substance's melting point, which is often reported at a standard pressure such 1 atmosphere or 100 kPa.
The freezing point or crystallisation point is the point at which a substance reverses its state from liquid to solid. Due to a substance's capacity for supercooling, the freezing point might frequently appear to be lower than it actually is. In actuality, the actual method used to establish a substance's "characteristic freezing point" is nearly invariably "the concept of observing.
The melting point was used for the slider.
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