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The butter contains a new arrangement of atoms. It’s a physical change therefore it cannot change into a different substance and it can turn into a solid again as physical changes just the property of a substance. The butter also remains as butter so there would still be the same number of atoms.
Melting butter is a physical change. The statement best describes what is happening is the butter contains a new arrangement of atoms.
What is a physical change?
A physical change is that in which the chemical structure of any substance doesn't change.
Examples are melting of ice, freezing of water,
Only changes in size and form occur.
Thus, the correct option B. The butter contains a new arrangement of atoms.
Learn more about physical change
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