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Under what conditions heat can be given to a substance without raising its temperature?
Wiki User
∙ 11y ago
If the substance is in solid condition and at the melting temperature, heat can be given without rising the temperature. Then the substance melts and all the heat will be used in the melting process.
Also when the substance is at the boiling temperature you can add heat without rising the temperature. At that point the heat is used to vaporate the substance.
Wiki User
∙ 11y ago
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How can a matter change from solid state to liquid state and reverse the process?
At a unique temperature, called the "freezing point", for each pure substance at a constant pressure, a solid form of the substance can change from solid to liquid phase by absorbing heat energy from its environment without raising the temperature of the substance, and, at the same temperature and pressure, a liquid phase of the same substance, can solidify without changing its temperature if it can transfer heat energy to the external environment.
How do you dissolve a saturated solution without adding water?
By raising the temperature i.e. by heating it.
How much heat does it take to raise the temperature of a substance one degree?
The amount of heat required is called the specific sensible heat for the substance. Sensible, in this context, means something which can be sensed. This is in contrast to latent heat which is used to change the phase of a substance without a change in temperature.
What is the heat of evaporation?
Heat of vaporisation is the amount of heat require to transform substance from liquid to gas state at constant temperature. Heat of vaporisation expressed in kJ/kg of substance.
Why does an ice cube stay at 0c for a long time?
The enthalpy of fusion, or Specific heat of fusion/melting is the temperature that it takes for a substance to freeze/melt. Generally it is much greater than it would ordinarily take for the substance to increase 1 degree Celsius in either solid or liquid phase. So, while at the freezing/melting point, the substance can absorb energy without changing the temperature during the state change.
Can you ever heat a substance without raising its temperature?
no
How can a matter change from solid state to liquid state and reverse the process?
At a unique temperature, called the "freezing point", for each pure substance at a constant pressure, a solid form of the substance can change from solid to liquid phase by absorbing heat energy from its environment without raising the temperature of the substance, and, at the same temperature and pressure, a liquid phase of the same substance, can solidify without changing its temperature if it can transfer heat energy to the external environment.
How can you make a liquid boil without raising its temperature?
By reducing the pressure
How do you dissolve a saturated solution without adding water?
By raising the temperature i.e. by heating it.
How can temperature be increased without heating?
It is possible to add heat to a substance without changing its temperature. That happens during melting and boiling. However, I cannot think of a case in which the temperature of a substance increases without heat being added to it, either by radiation, conduction or convection.
What is the temperature of vinegar in celsius?
As with any other substance, without any outside influence, it will take on the ambient temperature.
How do you make a substance without atoms?
At a sufficiently high temperature you get a substance called plasma which contains no atoms; it consists of fragments of atoms.
What is difference between dry heat and moist heat?
Dry heat is the absolute substance temperature without accounting for the modulating effects of water vapor in the substance. Moist heat is the relative substance temperature when accounting for the modulating effects of water vapor.
What turns from a solid to a gas without the solid turning to liquid?
This process is called sublimation and can occur with many solids given the correct conditions of temperature, pressure, and humidity. The famous substance that does this is dry ice or frozen carbon dioxide.
What is the energy required to change a substance from a solid to a liquid WITHOUT changing it's temperature?
magic of coarse!
Which heat changes the state of a substance without changing its temperature?
both the heat of fusion and the heat of vaporization
Why is heat energy needed to melt a solid what is heat energy called?
Under what. Condition heat can given to a substances without raising its temperature
