Question

Melting is a process in which the solid phase changes to
A. Liquid phase
B. Liquid phase at a constant temperature
C. Gaseous phase
D. Any phase

Answer 1

Hint: Melting is a physical process that is used for the phase transition. It is a reversible change. Reversible changes are the changes where we can bring the final results to its initial substrates using some simple techniques.

Complete step by step answer:
The process of bringing solid material into the liquid state is known as melting. Melting occurs when we increase the internal energy of the solid material by different means. Typically the internal energy of the solid is increased by exposing it to the heat.
Every material has a melting point. It depends on the type of bond the solids have. The melting point is the point of temperature at which the material starts to change its state from solid to liquid form at the atmospheric pressure. Before this point the melting does not initiate. At this point, both the solid and liquid state exists at equilibrium.
The melting point of the material depends on the pressure applied to the material due to the surrounding. As the pressure increases the melting point of the material decreases. This means that the melting point is inversely proportional to the pressure.

So, the correct answer is “Option A”.

Note: Every substance in this universe which occupies some space is known as matter. Matter can be divided into different phases based on the compactness or distance between the molecules. So the matters are divided into phases such as solid phase, liquid phase, and gas phase. These phases are also termed as states.