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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.
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?
Melting and boiling points are the same for a substance at its triple point, where all three phases (solid, liquid, gas) can coexist in equilibrium. For example, water has a melting point of 0°C and a boiling point of 100°C at standard atmospheric pressure, but at its triple point, water can exist in all three phases at 0.01°C and 611.657 pascals of pressure.
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.
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 are the effects of pressure on melting boiling points of a substance?
Increasing pressure generally increases the melting and boiling points of a substance. This is because pressure forces molecules to be packed closer together, making it harder for them to break free from each other in the solid or liquid phase. Conversely, decreasing pressure lowers the melting and boiling points.
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.
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.
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.
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.
Temperature at which a substance changes from a solid to a gas is?
boiling point
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.
If a substance is kept at atmospheric pressure what is its phase of matter completely depend on?
The phase of matter a substance is in at atmospheric pressure is primarily dependent on its temperature. At a certain temperature, known as its boiling point, a substance will transition from a liquid to a gas. Conversely, at another temperature, known as its freezing point, a substance will transition from a liquid to a solid.
Explain with an example how melting and boiling points are same?
Melting and boiling points are the same for a substance at its triple point, where all three phases (solid, liquid, gas) can coexist in equilibrium. For example, water has a melting point of 0°C and a boiling point of 100°C at standard atmospheric pressure, but at its triple point, water can exist in all three phases at 0.01°C and 611.657 pascals of pressure.
What change of state occurs when a substance reaches it's melting point. What occurs when it reaches it's boiling point?
When a substance reaches its melting point it changes from solid to liquid. When a substance reaches its boiling point it changes from liquid to gas.
What is the temperature of a substance when it turns into another state of matter?
The temperature at which a substance changes state is called its melting point or boiling point, depending on the transition. For example, when a solid turns into a liquid, it reaches its melting point; when a liquid turns into a gas, it reaches its boiling point.
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".
