3. Write differences between physical change and chemical change.
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Answer:
Physical change refers to a change in which the molecules are rearranged but their internal composition remains same. Chemical Change is a process in which the substance transforms into a new substance, having different chemical composition.
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Explanation:
1 - physical change is reversible but chemical change is irreversible.
2- It is a change where the properties and composition of substance remain same but in chemical change new substance is formed.
3- physical change is temporary whereas the Chemical change is permanent.
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