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The molecules in a solid are held by strong intermolecular bonds. For the solid to melt, these bonds have to be broken. Since energy is needed to break the intermolecular bonds, the thermal energy supplied at the melting point is used to do the work to break the intermolecular bonds between the molecules of the solid. Once the intermolecular bonds are broken, the molecules can then move out of their fixed positions. Hence it can then be said that the solid has melted, which is the change of state from solid to liquid. This explains why temperature remains constant during the melting phases.

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14y ago
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4mo ago

When a substance is melting, the energy being added goes into overcoming the forces between particles to break the solid structure rather than increasing the temperature. This energy is used to weaken the bonds holding the solid structure together, and once those bonds are broken, the substance can transition to a liquid state without a change in temperature.

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14y ago

When liquid molecules come together and solidify, intermolecular bonds are formed. As the intermolecular bonds are formed, thermal energy is then released, which explains why the temperature remains constant during the freezing phases.

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8y ago

Temperature is a measure of thermal energy. If you add energy to a system and it doesn't have anywhere else to go, it will go into thermal energy and the temperature will increase. If you cool a system down, you're removing energy from it, which generally comes from the thermal energy.

However ... if you're under conditions where a phase changes is possible ... the energy can go into/come from the phase change rather than from thermal energy. In the case of liquid water, 1 calorie of energy is roughly the amount of thermal energy that represents a change of 1 degree Celsius for 1 gram of water. But, if the water is at the boiling point ... it takes about 540 calories per gram to transition from the liquid state to the vapor state. Adding heat energy at that point doesn't raise the temperature, it just goes into converting the water to water vapor.

Similarly, when water vapor condenses back to a liquid, it releases about 540 calories per gram. So as you cool water vapor (remove energy from it) the temperature decreases to the boiling point, and then the vapor starts condensing (and releasing a lot of energy in the process).

The same thing happens with melting/freezing, though in that case it's about 80 calories per gram.

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Q: Why does the temperature stay the same when melting?
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Related questions

What will happen to the temperature of the ice while to is melting?

It will stay the same


What will happen to the temperature of ice while it is melting?

It will stay the same


Since the melting and freezing temperature are the same does something stay the same temperature when it is melting?

When a substance is melting, it stays at a constant temperature until all of it has melted. During this process, the energy being added is used to break the intermolecular forces holding the solid structure together, rather than raising the temperature. Therefore, the temperature remains constant until the phase change is complete.


What happens when the temperature stays the same in a melting curve?

During melting the temperature remain constant if it was achieved the melting point.


What is the same between freezing and melting?

The temperature is the same. The temperature at which something freezes is the same as the temperature at which that same thing mels.


Why does the temp stay the same when boiling and melting?

The temperature stays the same during boiling and melting because the heat energy is being used to break intermolecular forces rather than raise the temperature. During boiling, this energy is used to convert the liquid into vapor, while during melting, it is used to convert the solid into a liquid.


The temperature is the same at the melting point and the freezing point?

Yes


Is boiling point is always same as the melting point?

No, the boiling point and the melting point are not always the same. The boiling point is the temperature at which a substance changes from a liquid to a gas, while the melting point is the temperature at which a substance changes from a solid to a liquid.


The temperature at which a substance freezes is also its 1. Evaporation point 2. Melting point 3. Condensation point?

Melting point. The temperature at which a substance freezes is the same as its melting point, as this is the temperature at which a solid substance transitions into a liquid state.


Is it true that the temperature of the liquid is the same as the ice during melting?

yes it is. Its melting so its becoming a liquid


What is the substances melting point the same as?

A substance's melting point is the temperature at which it changes from a solid to a liquid state. It is unique to each substance and does not necessarily match the melting point of any other substance.


Is the melting point the same temperature as the freezing point for a substance?

freezing ur mamas as