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jakkuske
If something was turned? I'm not really sure what you are talking about, but for something to become a chemical reaction it involves and arrangement of molecular and ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction.
Aaliyah31801
It would only be a chemical reaction if you can't change the "something" back to what it was originally was

For example when you make pancakes that is a chemical reaction because you can't turn the baked pancake into the batter again