The temperature remains the same during melting because all the heat energy is used to break the bonds holding the ice molecules together, rather than increasing the temperature. This energy is known as the latent heat of fusion. Once all the ice has transformed into water, the temperature can then increase as more heat energy is used to raise the temperature of the liquid water.
During melting the temperature remain constant if it was achieved the melting point.
The temperature remain constant during a change of phase.
No. The temperature does not change during the melting process. All of the heat energy is used to break the bonds of the solid to form a liquid, i.e. the energy is used in the phase change, and thus is not used to raise the temperature.
The chemical composition of water remain unchanged.
Provided other environmental factors remain constant, yes.
During melting the temperature remain constant if it was achieved the melting point.
The temperature remain constant during a change of phase.
No. The temperature does not change during the melting process. All of the heat energy is used to break the bonds of the solid to form a liquid, i.e. the energy is used in the phase change, and thus is not used to raise the temperature.
No. During a phase change, a substance will remain at a constant temperature until the change is complete. In the case of melting ice, the heat initially goes into separating water molecules from the ice lattice, which is melting. During that time, the heat goes into continued melting of the ice and the temperature remains constant. Once all of the ice is melted, adding additional heat will increase the temperature of the now liquid water.
Because of phase transition ie from solid to liquid during melting and from liquid to vapour during boiling. So just to change over from one phase to the other heat is totally utilized and hence no chance to have a rise in temperature. So temperature remains constant.
The chemical composition of water remain unchanged.
Provided other environmental factors remain constant, yes.
The temperature remain constant.
Melting and boiling are changes of state. Melting changes state from solid to liquid, and boiling changes state from liquid to vapor. Thus, these are physical, not chemical changes. All of the heat energy that goes into changing solid to liquid or liquid to vapor (or any change of state for that matter), is used only to change the state and therefore the temperature of the system does not change.
It can't. You can increase the melting point of a particular rock by placing it under a great deal of pressure however.
The freezing point of a liquid is the temperature at which it solidifies into a solid, while the melting point of a solid is the temperature at which it changes into a liquid. These two temperatures are the same because at both points, the substance is in equilibrium between its solid and liquid form, with no net change in phase occurring.
During melting and boiling, the energy being added to the substance is used to break the intermolecular forces holding the molecules together, rather than increasing the kinetic energy of the molecules. This means that the temperature remains constant because the energy is absorbed as the substance undergoes a phase change.