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Putting a substance under pressure increases its melting point because substances expand as they melt. Putting them under pressure makes it harder for them to expand, which means that they require more energy (heat) in order to transition from a solid state to a liquid state. If a substance is under pressure, decreasing the pressure will lower its melting point.
Wiki User
∙ 9y ago
Wiki User
∙ 15y agoThe higher the pressure, the higher the melting point. (Until you reach the triple point, where all 3 states co-exist.)
Wiki User
∙ 11y agoThe higher the pressure, the higher the melting point.
Wiki User
∙ 12y agowhole if you step on a rock it will get crushed
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Does melting point changes from altitude to altitude?
Yes, it does. It is do because with change in altitude their is change in temp. and pressure which also changes the melting point. The change in melting point could be small to large depending upon change in conditions at different altitudes.
How does the melting point of water change as pressure increases from1atm?
Decreases
Does there occur any change in melting point of ice by variation of pressure?
Yes, increase in pressure causes the freezing point to drop.
What is another way of describing a freezing point of change?
- Melting point change. ^.^
Is a melting points a physical or chemical change?
Melting point is a physical property, not a change.
What temperature will a substance melt if the atmospheric pressure is 1.2?
Leaving aside the obvious deficiencies in the question (1.2 WHAT? What substance?)... For most substances pressure has only a tiny effect on the melting point, and enormous pressures are required to change the melting point significantly (in contrast to boiling point, where pressure has a relatively much greater effect).
Does melting point and boiling point of liquid changes from altitude to altitude?
The boiling point depends on altitude (pressure). The effect on the melting point is not significant.
Does melting point changes from altitude to altitude?
Yes, it does. It is do because with change in altitude their is change in temp. and pressure which also changes the melting point. The change in melting point could be small to large depending upon change in conditions at different altitudes.
How does the melting point of water change as pressure increases from1atm?
Decreases
How does melting point of bromine change with external pressure?
Bromine, as many other materials gets a higher melting point when pressure is low [less energy is needed to set molecules free] and lower melting point when pressure is high [more energy needed].
Does melting point change from altitude to altitude?
The melting point of a substance does change with altitude. All due to atmospheric pressure, makes different elements behave differently.
As you go to higher elevations above sea level the boiling point of water?
as you go higher above sea level, pressure decreases. Due to the decrease in pressure, the temperature needed for water to boil is less than it is than it would be at sea level. Thus, it would take less heat energy for the bonds to break and become a gas than it would in an environment with more pressure.
Does there occur any change in melting point of ice by variation of pressure?
Yes, increase in pressure causes the freezing point to drop.
Do the melting point and boiling point of a substance ever change?
These values depends (specially the boiling point) on the pressure.
What is the meaning of thermodynamic melting point?
Thermodynamic melting point is the temperature and pressure at which a solid will be in equilibrium with a liquid of the same composition. It is not a single point, rather it is a two-dimensional function of temperature and pressure. For most substances, the effect of pressure is rather gradual so that large changes in pressure are required to cause any significant changes in the melting point temperature.
What mining of melting point?
The melting point is the temperature at the solid and liquid states of the material are in equilibrium; if the temperature is even very slightly above the melting point, the material will melt, and if it's even very slightly below, the material will freeze. Technically the melting point depends on the pressure, but usually the dependence is not very strong; you have to change the pressure a lot (and by "a lot" I mean many multiples of normal atmospheric pressure) to change the melting point by enough to even notice.
What Would be the effect poorly packed in melting point?
The effect of poorly packed will decrease the melting point.
