define: (i) Ion (ii) Physical change
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2) A physical change is a type of change in which the form of matter is altered but one substance is not transformed into another. The size or shape of matter may be changed, but no chemical reaction occurs. Physical changes are usually reversible. ... Most chemical changes are irreversible.
1) Lon Luvois Fuller was an American legal philosopher, who criticized legal positivism and defended a secular and procedural form of natural law theory. Fuller was a professor of Law at Harvard University for many years, and is noted in American law for his contributions to both jurisprudence and the law of contracts.
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A physical change is a type of change in which a form of matter altered but one substance is not transformed into another