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See "Related Questions". Phase changes are reversible by adding or subtracting heat. In many cases chemical changes are not easily reversed.

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15y ago

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Related Questions

Is a Chang in a phase a physical change or chemical Chang?

A change in phase is a physical process.


Is a phase change an example of a physical or chemical or nuclear or a covalent change?

A phase change is an example of a physical change, not a chemical, nuclear, or covalent change. During a phase change, the substance undergoes a change in state (solid, liquid, gas) without any change in its chemical composition.


Are phase changes physical or chemical in nature?

Phase changes are physical changes in nature. They involve a change in the state of matter (solid, liquid, gas) rather than a change in the chemical composition of the substance. Heating or cooling a substance can trigger phase changes.


When ethanol condenses and from the gaseous phase into the liquid phase is this a physical change or chemical change?

physical change- the composition of the ethanol is not effected


When icicles form is it a physical or chemical change?

It is called a phase change.


What is as specific type of physical change?

phase change


When boiling take place is the phase change a chemical or physical change?

Boiling is a physical change.


When water is boiled is it a chemical or physical change?

Boiling is a physical phenomenon, a change of phase.


Is water evaporating into gas a physical change?

Yes, evaporation is a physical change of phase.


Is water turning into gas a physical change?

Yes, evaporation is a physical change of phase.


Is water evaporating into the atmosphere a physical change?

Yes, evaporation is a physical change of phase.


Is melting ice a physical change or chemical change?

Physical; all phase changes are physical changes because the composition does not change.