Chemistry

Are phase changes always physical changes?

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2013-02-11 23:11:27
2013-02-11 23:11:27

phase changes are always physical changes

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Phase changes are physical processes.


Phase changes and dissolving are types of physical changes.


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.


When a substance changes phase, its chemical properties are not altered. Therefore, changes in phase are physical changes. Thus, melting, freezing, boiling, deposition, condensation, and sublimation are also physical changes.



The names of the six phase changes are freezing, melting, sublimation, deposition, condensation, and evaporation. These phase changes are physical changes.


Phase changes are physical, though they can take place together (or after, as a result of) a chemical reaction (but this is not necessary).


a phase change is where you go and have sex and when the sperm comes outt there you go


Because the substance is physically changing.


no, they are physical changes related solely to temperature and pressure.



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


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


The kinds of changes in substances that are always physical changes are changes in the state. This is the change from solid, to liquid and then to gas and the reverse.


Physical change. The wax was solid and now it is a liquid. All phase changes are physical changes.


For example after phase changes.


When a substance changes phase, this is a physical changerather than a chemical change. When water freezes to become ice, or when ice melts to become water, its all physical.


CorrectedPhase 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


Change from solid phase to liquid phase: melting, a physical phenomenon.


Distilling alcohol involves two phase changes. It involves going from liquid to gas, and then from gas to liquid again. Phase changes are physical changes because the chemical structure of the alcohol is not changing.


Yes. Physical changes are changes to the physical shape. The atoms are still the same. (Example: If you boil water, you can always get the water back.)


Melting of gold for jewellery making is a physical change as no new substance is formed after melting. Changes in state or phase are physical changes.


That is a physical change. Like ice melting


A physical change is one in which no chemical reaction has taken place, so the physical properties before the change are the same as they are after the change. Physical changes include phase changes and dissolving.



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