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You forgot to dry the bread knife when you washed it and reddish brown spots appeared on it is it physical or chemical?
Lizbetgutierrez
Both, the reddish spots are rust and a chemical change. You will also find (after you have rubbed off the rust) that the surface of the knife is pitted. These pits are a physical changed caused by the chemical reaction.
Wiki User
∙ 9y ago
Wiki User
∙ 9y agoThe appearance of reddish brown spots on bread knife are a sign of chemical reaction
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