0
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".
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoNo..The melting point of a substance is the temperature at which it gets converted into a liquid from a solid...Whereas, the boiling point of a substance is the temperature at which a liquid, gets converted into the gaseous state. Melting point is the same as freezing point because the temperature at which a substance melts is the same at which it freezes also. The boiling point is the same as the condensation point because the temperature at which a liquid gets converted into a gas is the same as the temperature at which a gas gets converted into a liquid (Condensation).
Wiki User
∙ 16y agoNo, only the melting point and the freezing point are the same temperature which is 0 degrees Celsius. The boiling point is 100 dgrees C.
Wiki User
∙ 12y agoThe melting point is the same as the freezing point; however, the boiling point is not the same as the melting point.
Wiki User
∙ 7y agoOnly at the triple point (pressure plays a big role).
Wiki User
∙ 7y agoFreezing and boiling points are different temperatures.
Wiki User
∙ 11y agoTrue
Add your answer:
Earn +20 pts
For any pure substance the boiling point and melting point will always remain?
The melting point and the boiling point of a substance are physical characteristics for each substance and are unchanged at the same pressure.
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.
Is freezing point of a substance is equal the melting point of the same substance?
The freezing point and the melting point both refer to the temperature at which a substance changes between a liquid and a solid state. If other conditions remain the same, the temperature at which a substance freezes is the same temperature at which it melts. Water is an every day example with a freezing point of 0C, the same temperature as it will begin to melt. Other substances such as metals have significantly higher melting points from around 200C to more than 3000C.
Freezing point of pure substance 21 degrees what is the melting point?
The melting point would also be 21 degrees because the freezing point and melting point of a pure substance is exactly the same.
What is gold's freezing point?
1063 °C(lit.) Freezing points and melting points generally can be used interchangeably. Scientific data is reported as the melting point or mp. Purity will also effect the freezing point but very useful in determining the purity of a substance.
Do all liquids have the same boiling and melting point?
No. The melting and boiling points of liquids vary considerably.
Why can boiling points and freezing points be used to identify substance?
It's because substances have different boiling point and freezing point. By finding the exact boiling point and freezing point, you can identify a substance. Keep in mind that a material's melting point is the same as its freezing point. These are just different terms for the same thing, it just depends on whether energy is being removed from a substance (freezing) or if energy is being added to a substance (melting). The same thing also applies to the boiling/condensation point.
For any pure substance the boiling point and melting point will always remain?
The melting point and the boiling point of a substance are physical characteristics for each substance and are unchanged at the same pressure.
How is the melting point of a substance related to its freezing point?
The melting point of a substance is when a substance turns from a solid to a liquid, and the freezing point is when a substance turns froma liquid to a sold. This of water, t he freezing point, when it turns to a solid (ice) is 0 degrees C. Hope that helps!
If a substance forms crystals when it solidifies its melting and freezing points are the same?
Melting and freezing points are identical.
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 boiling temperature a characteristic property?
Yes, boiling point is a characteristic property of matter. It is called a characteristic property because no matter how much of a pure substance you have, the boiling point should remain the same. Therefore, it is a characteristic property of pure substances.
Why can the boiling point and the melting point be used to help identify a substance?
The boiling and melting points are almost unique to individual substances. If it should happen that two possible substances have the same melting point, they can still be identified by the method of mixed melting points. If substances A and B have the same melting point and you mix them, the mixture will melt belowthe tabulated temperature. Thus if you mix your unknown with a sample of what you think it is, if you are right it will still melt sharply at the expected temperature, but if you are wrong it will melt gradually and at a lower temperature.
Are the boiling points higher temperature than the melting points?
yes, for the same molecule. However, some substances don't have a liquid phase and so the melting point is exactly the same as the boiling point at normal pressures (sublimation is the phase change from solid -> gas)
Explain why the boiling point and the melting point can be used to help identify substances?
100 degrees mate. 100 degrees Celsius is the boiling point for pure water at 1atm or sea level. The boiling point is useful in identifying chemical compounds. Chemical compounds have different boiling points that are specific to it' s chemical composition. If you know what the boiling point or melting point is you can also tell if your compound is pure, as any impurities will change these.
What physical and chemical properties would you expect to find in two different samples of a pure substance?
Physically I would expect to find the same boiling and melting points, and the same density. Chemically, I would expect the same reactivity with other substances.
Why is melting and freezing point of a substance same?
"Melting" and "freezing" are transition actions, going from solid-to-liquid form and liquid-to-solid form respectively. The point is the same transition temperature of that particular substance. The same goes for the transition temperature of the "boiling point" and "condensation point" of a substance.
