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A substance change from a solid to a liquid at its?
A substance change from a solid to a liquid at its boiling point. This is when it reaches a certain temperature.
Explain with an example how melting and boiling points are same?
Iodine can sublime, i.e. change directly from solid to gas, at normal room pressure as long as the pressure is right, the substance can sublime
How can the boiling point of water be raised or lowered?
because the boiling and freezing points can be from two different substances so one could be frozen at 0 degrees and the other boiling
How does boiling differ from evaporantion?
the difference between sublimation and boiling is that sublimation is that a solid changes to a gas and boiling is that liquid changes to a gas and that's my answer guys by.
Does boiling point and melting point occur at the same temperature?
It depends on the substance and the pressure. For most substances at atmospheric pressure, the boiling point is much higher than the melting point. However, some things, like nitrogen and carbon dioxide, do not have any liquid phase at atmospheric pressure--they go directly from solid to gas and vice-versa.
How does atmospheric pressure affect the boiling point of matter?
Atmospheric pressure exerts pressure on the molecules of the liquid, confining them. In order to boil, the electrons must be excited, but must become hotter to overcome the pressure of the atmosphere. Therefore, pressure makes a liquid boil at a higher temperature. With a solid, the molecules are already compact together and have to be melted before they can be boiled. This does not require excitation of electrons, but it does require movement of electrons. Once the solid is melted, pressure will make it harder for the electrons to become excited.
A substance change from a solid to a liquid at its?
A substance change from a solid to a liquid at its boiling point. This is when it reaches a certain temperature.
Why are the melting point and boiling point of the same matter different?
Boiling point is the temperature at which a substance turns into a gas, while melting point is the temperature at which a substance turns into a liquid state from a solid state. The boiling point is always a higher temperature then the melting point. The melting point has a substance turn into a liquid from solid, and boiling point has a liquid turn into a gas.
Temperature at which a substance changes from a solid to a gas is?
boiling point
Explain with an example how melting and boiling points are same?
Iodine can sublime, i.e. change directly from solid to gas, at normal room pressure as long as the pressure is right, the substance can sublime
Is the boiling point of something the same as the melting point?
The boiling point is the temperature at which the vapor pressure of the liquid is equal to the external pressure. It is also the condensation point. The freezing point is the temperature at which liquid and solid coexist in equilibrium. It is also the melting point.
What is the temperature of a substance when it turns into another state of matter?
The temperature is its melting point when from solid to liquid, and its boiling point when from liquid to gas. These temperature points also depend on pressure.
What are the melting and boiling points of different substances?
At 1atm, the melting point of H2O(water) is 0 degrees celcius and the boiling point is 100 degrees celcius. Carbon dioxide's boiling point is at -25 degrees and so its meting point. Since it crystallises and sublimates, it has no liquid form. The boiling- and melting points of elements/compounds depend on the amount of pressure exerted on the element/compound. Generally, the higher the pressure, the higher the boiling and melting points. All except for water, gallium and bismuth. These substances' melting point decreases as pressure increases.
When are boiling temperature and freezing temperature equal?
At the triple point for the substance. At that particular temperature and pressure you have solid, liquid and gas existing at the same time, so it will "boil" (become a vapor) and freeze (become a solid) at the same time.
Are melting and boiling points of a substance the same?
The melting and boiling points of a substance (in this case I am assuming you are referring to a pure substance, and not a mixture), are the same. The triple point is defined by the temperature and pressure at which solid, liquid, and vapor of a substance, can coexist in equilibrium. At any pressure below the triple point, only sublimation and condensation are possible (no liquid phase is possible). Between the triple point pressure and the critical point pressure, there is a difference between the melting and boiling points, of a substance. The melting point temperature will be lower than the boiling point. At the critical point, the densities of the liquid and vapor phases, have merged, and boiling no longer occurs. At and above the critical point, you cease to get liquid and vapor, but you get what is referred to as a "supercritical fluid".
How can the boiling point of water be raised or lowered?
because the boiling and freezing points can be from two different substances so one could be frozen at 0 degrees and the other boiling
What substance is not a solid at 20C and one atmosphere of pressure?
calcium?
