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No.
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Some chemical changes are reversible, others are not.
physical changes are anything that can be undone, egcrumpling paperchopping woodbuilding with legosfreezing waterboiling waterdissolving salt waterchemical reactions can't be undone, egbaking cookiesthose hot packs for ski tripsputting an alka seltzer in water
depending on the clasp type usually you just unhook the back
Undone is correct.
you can not because the undone is already undone...............
Where I live we usually say shoelace/s. Your shoelace is undone. Your shoelaces are undone.
A chemical change. Physical changes can be undone. You cannot unburn paper.
...Undone was created in 1985.
Chemical change. Physical changes (like melting) can be undone. But you cannot unbake a cake.