during the change of state from solid to liquid the temperature remains constant what happens to the energy gained by the substances during that time
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When a substance is heated, it gains thermal energy. Therefore, its particles move faster and its temperature rises. When a substance is cooled, it loses thermal energy, which causes its particles to move more slowly and its temperature to drop.Calculate the energy change needed for a phase change. ... The process of a solid becoming a liquid is called melting. ... For any pure substance, the temperature at which melting occurs—known as the melting point—is a ... Hence melting is an isothermal process because a substance stays at the same temperature.Heat is the total energy contained within a substance. As a solid is heated, its temperature increases as the molecules move faster. During the phase change, when solid melts into liquid, its temperature remains constant as the heat energy is stored as potential energy.The extra heat supplied, is used in melting of ice, which is called latent heat of fusion. ... The extra heat supplied to the boiling water is used in the vaporisation of water, which is known as latent heat of vaporisation. That's why, the temperature of a substance remains constant during its melting or boiling point.Heat is required to change the phase as well as to increase the temperature. During phase transitions, the heat supplied (called the latent heat) is fully utilised to change the state by overcoming the force of attraction between the particles. So, the temperature remains constant during the change of state