Question

Is melting point considered a physical or chemical change?

Answer 1

To solve this question we should know about:
Physical changes: Physical changes alter a chemical substance's appearance but not its chemical content.
Chemical change: When a material mixes with another to generate a new compound, this is known as chemical synthesis.
So, first we will analyze the given reaction then we will decide what will be the nature of the reaction.

Complete answer:
To solve this first we define what is melting point:
The temperature at which the solid and liquid forms of a pure substance can exist in balance is known as the melting point. When heat is given to a solid, the temperature rises until it reaches the melting point. More heat will then transform the solid to a liquid without changing the temperature. Additional heat will boost the temperature of the liquid once all of the solid has melted. The melting temperature of crystalline solids is a useful metric for identifying pure compounds and elements. The majority of mixes and amorphous solids melt across a wide temperature range.
When water is changed into hydrogen and oxygen gas, it is referred to as chemical transformation. When you turn water into ice or steam, you are undergoing a physical shift (solid-liquid-gas).
Physical change is defined as the transformation of a solid into a liquid or gas, a liquid into a solid or gas, or a gas into a liquid or solid.
Chemical change, on the other hand, occurs when a substance is changed into one or more distinct compounds.
So melting ice turns it back into water, and melting iron turns it into liquid iron. Melting is thus a physical change.

Note:
Keep in mind that acid does not melt anything; instead, it corrodes, assaults, or oxidizes materials, transforming them into new ones. Of course, this is a chemical change. So, don’t get confused between these two melting concepts.