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Melting of butter is a physical change.
Melting is a physical change.
Physical, because the stuff that the butter is made out of doesn't change, just the state, or physical form, that it is in. (solid to liquid.)
Physical. It is still butter. It is still just a piece of bread. But now it is butter on a piece of bread with a bite out of it. The bread/butter is not chemically changing to form a TOTALLY new substance. For instance, when you melt butter its no longer a solid its now a liquid. Looks different, the temperature is different, and it may even taste diifferent but its still butter. But if you were to take sugar and dissolve it in water it becomes a totally different substance.
A physical change
it is a physical change
it is a physical change
It's not a physical change
This is a physical change.
Melting is a physical change; but above a temperature the thermal decomposition of butter begin - this is a chemical change.
Making butter involves the materials in a mixture to be separated. This makes the process of making butter a type of physical change.
Melting of butter is a physical change, a change of phase; but the brown color, at high temperature, is an indication of thermal decomposition - this ia a chemical change (change of composition).