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If you are talking about phase change from solid to liquid to gas, it is temperature. If you are talking solid state phase changes (rearrangement of the crystal structure), there are a variety of things but temperature is still a very important one. Other things include pressure, deformation, composition changes, corrosion, radiation, electric fields, and magnetic fields.
What else can I help you with?
What phase change causes water to evaporate?
This phase change is called evaporation.
When substances go directly from the solid phase to the gas phase the phase change is called?
sublimation
What causes a substance to change a phase?
change in temperature
Why do substances exist as gases?
At a given temperature practically all substances become a gas; it is a change of phase.
Why does an energy transfer not always result in a phase change?
An energy transfer does not always result in a phase change because the energy can be used to increase the temperature of a substance without causing it to change from one phase to another. Phase changes occur when a substance reaches a specific temperature and energy level that causes its molecular structure to rearrange, such as melting or boiling.
What happens to energy added during a phase change?
The added energy is used in the phase change to break intermolecular bonds.It is used for the phase change. ~ APEX
The change from one state of matter to another is a?
phase change.
What is the best definition of a physical change?
A change in a substance with no new substances being formed (Apex)
When a substance changes from one physical form to another you say the substance has had a what?
When a substance changes from one physical form to another, you say the substance has had a phase change or undergone a phase transition.
What is a change of substance from one state of matter to another called?
Phase change. Liquid phase to gaseous phase (evaporation) Liquid phase to solid phase (solidification, freezing) Solid phase to gaseous phase (sublimation9 Etc...
Why wouldn't the temperature of a substance change when heated or cooled?
There are two points for most substances where a phase change takes place. The energy used to rearrange molecules, called the heat of entropy, must be added or removed before the phase can change. The substances show little or no temperature change at some point in this process.
What is the change of a substance from one physical state to another?
change of state
