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What substance can change from a liquid to a gas on its own without energy needing to be added?
Wiki User
∙ 11y ago
water
Wiki User
∙ 11y ago
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How does the energy of a substance change during an exothermic change?
During an exothermic change, such as freezing, the substance releases energy to its surroundings.
What has to be added to a substance to cause a phase change?
Heat energy must be added to or subtracted from a substance to cause a phase change.
What is the difference between endothemic and exothemic?
The difference is that the endothemic change is when energy is absorbed from the substance and exothermic change is when energy is removed or taken out of the substance.
What is the name of the energy needed to change a substance from a liquid to a gas?
The energy needed to change a substance from a liquid to a gas is called the enthalpy (or heat) of vaporization.
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.
Latent heat is the energy required for 1 kg of a substance to change?
Latent heat is the energy required for 1 kg of a substance to change ___________. phase
Is energy flow involved in a change in state?
Yes, energy is simply a way for things to change, therefore it is needed. Without energy flow (where energy is either gone or constant) a substance will remain the same.
What is the energy required to change a substance from a solid to a liquid WITHOUT changing it's temperature?
magic of coarse!
How does the energy of a substance change during an exothermic change?
During an exothermic change, such as freezing, the substance releases energy to its surroundings.
How can you add thermal energy to a substance without increasing the temperature?
You can add thermal energy to a substance without increasing its temperature by adding hot water. As the thermal energy of the substance increases, the particles of the substance expands. That is how you can open a bottle by putting it under hot water.
What has to be added to a substance to cause a phase change?
Heat energy must be added to or subtracted from a substance to cause a phase change.
What is the difference between endothemic and exothemic?
The difference is that the endothemic change is when energy is absorbed from the substance and exothermic change is when energy is removed or taken out of the substance.
What change when the amount of a substance change?
total thermal energy
What is the name of the energy needed to change a substance from a liquid to a gas?
The energy needed to change a substance from a liquid to a gas is called the enthalpy (or heat) of vaporization.
What does not change when a substance changes matter?
During a physical change, the matter of what the substance is made out of doesn't change.
Why does temperature no change during energy phase change?
During a phase change, the heat transferred to a substance is used to break intermolecular forces (latent heat), and thus the temperature of the substance does not change. The opposite also occurs: heat is transferred from a substance during a phase change without a decrease in temperature as intermolecular bonds form.
What is the difference in specefic heat and latent heat?
Specific heat is the heat energy in joules required to rise the temperature of one kg of substance through one kelvin without a change in its state. But latent heat is the heat required to change the state of one kg of substance without change in temperature.
