The change of state of a substance from solid to liquid is called
Melting is the process where a solid changes into a liquid due to an increase in temperature or pressure. This occurs when the substance absorbs enough heat to break the bonds holding its molecules in a fixed structure. Common examples include ice turning into water and metal melting for casting and manufacturing purposes.
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The correct answer is option [A] Melting. Melting is the process in which a substance transitions from its solid state to its liquid state upon the application of heat. This occurs when the temperature of the solid reaches its melting point, causing the solid’s crystal lattice structure to break down, allowing its particles to move more freely and adopt the liquid phase. Option [B] Evaporation involves the transition of a liquid to vapor, while option [C] Boiling refers to the rapid vaporization of a liquid at its boiling point. Option [D] None of these is incorrect, as melting specifically denotes the solid-to-liquid phase transition.