Yes it can; you simply have to reverse the reaction (upset Equilibrium); using whatever means you have available. All Chemical Reactions are reversible.
Technically no..... however; the application of "extreme" physical forces can cause chemical change such as applying exiremely high pressure to coal to cause the formation of diamond.
Chemical Changes the release of gas greater changes of heat the generation of light a change of color the formation of a precipitate These are chemical changes because they change the substance's...