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A phase change is a physical change. It is not a chemical change.

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12y ago

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Is phase changes physical or chemical?

Phase changes are physical changes, not chemical changes. They involve a change in the state of matter (solid, liquid, gas) without altering the chemical composition of the substance.


When water changes phase is it chemical or physical?

Physical, as it remains water.


Are melting butter and melting ice cream are both physical change or chemical change?

They're both physical changes. Phase changes are always physical changes. Chemical changes only involve chemical reactions - a change in the identity of the substance. That's why phase changes are physical changes. Ice cream remains ice cream when it melts.


What type of change occur when water changes from a solid to a liquid?

its a phase change


Is melting ice a physical change or chemical change?

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


How can you tell if a physical reaction is occuring?

During a physical change the chemical molecule is not affected; physical changes are changes of phase or form.


If water is boiling is it a chemical change or a physical change?

It is a physical change. All phase changes are physical, not chemical. The chemical composition of water does not change when it changes from a liquid to a gas, or for that matter, to a solid.


Changes that do not alter the nature of a substance?

Physical changes do not alter the chemical composition of a substance, only its physical appearance or state. Examples include changes in shape, size, phase (solid, liquid, gas), or state of matter (melting, freezing, dissolving).


What are phase changes?

its physical changes


Why is a phase change only a physical change?

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


Is boiling point a physical intensive physical extensive or a chemical?

When a liquid reaches boiling point it goes through a phase change, liquid to gas. Phase changes do not change the nature of a chemical so it is a physical change. This physical change can sometimes be caused by a chemical change though.


Is a typhoon a chemical change?

No, a typhoon is a physical structure energized by the latent heat of phase changes involving water.