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Corrected
Phase changes are physical, though they can take place together (or after, as a result of) a chemical reaction (but this is not necessary).
Neglect:
Chemical Because when you mix the changes it becomes chemical boom just aced that
Wiki User
∙ 10y ago
Wiki User
∙ 11y agoA phase change, aka a change from liquid to solid, liquid to gas, etc., is a physical change. Whichever phase a material is in is dependent on it's energy (and pressure). By adding just enough energy for a phase change, the individual molecules aren't changed, and are thus not chemically changed.
Wiki User
∙ 14y agoPhase Changes are: Solid Liquid (melting/freezing) Liquid Gas (boiling/condensation) Solid Gas (sublimation (i.e. Carbon Dioxide & dry ice)) These are physical changes. I.E. the molecules remain the same, and the process can be easily reversed by changing the temperature or pressure of the system. Chemical changes actually change the molecules into something else. For example burning hydrogen and oxygen to make water. In this case the reverse reaction is relatively simple. However, that isn't always true. So, burning a long chain hydrocarbon gives off carbon dioxide and water, but it is not easy to get the original substance back.
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Are phase changes physical or chemical in nature?
A phase change is a physical change. It is not a chemical change.
Is a melting wax a physical or chemical property?
Physical change. The wax was solid and now it is a liquid. All phase changes are physical changes.
Is dissolving a drink mix in water a physical or chemical change?
chemical
Physical or chemical humidifier putting moisture into the air?
The moisture is just water vapor, so you are getting a phase change from liquid to gas. Phase changes are physical changes. For a vaporizer to produce a chemical change it would have to do something drastic like convert the water in to H2 and O2.
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.
Are phase changes physical or chemical in nature?
A phase change is a physical change. It is not a chemical change.
Is phase changes physical or chemical?
Both
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.
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.
Is a melting wax a physical or chemical property?
Physical change. The wax was solid and now it is a liquid. All phase changes are physical changes.
Is dissolving a drink mix in water a physical or chemical change?
chemical
Is a boiling point an example of chemical properties?
No. Anything related to phase changes is a physical change.
Differences between physical and chemical changes?
A physical change is a change that does not change the chemical makeup of the substance. This can be crushing, tearing, or a phase change for example. A chemical change changes the chemical makeup of the substance. Some examples of this are rusting, combustion, or digestion.
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.
