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.
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.
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.
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.
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.
During melting the temperature remain constant if it was achieved the melting point.
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.
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.
The temperature at which the solid and liquid phases of matter exist together is called its melting point.
It will stay the same
During melting the temperature remain constant if it was achieved the melting point.
The temperature is the same. The temperature at which something freezes is the same as the temperature at which that same thing mels.
Yes
yes it is. Its melting so its becoming a liquid
Yes. A substance melts and freezes at the same temperature. Melting is as it changes from solid to liquid, freezing is from liquid to solid.
It has a lower melting point, i think.
When a material is melting, the temperature is likely to be increasing. That or the temperature is just above the material's melting/freezing point.
Both melting point and freezing point define the temperature at which a material changes either from a solid to a liquid or a liquid to a solid. A material freezing or melting is the same just the reverse so they happen at the same temperature. This is sometimes not true when you get supercooling or superheating, but that is more complicated!
If the temperature is below the melting point, you know it is in the solid state. If the temperature is below the boiling point, and above the melting point, you know it is a liquid. If the temperature is above the boiling point, you know it is a gas, etc. (Note: melting point is the same as freezing point).
no because the wax will always stay the same. it is a physical change
Hey, what is the melting point temperature?OrHouston's weather is like the melting point temperature?