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A nail rusts when the iron in the nail reacts very slowly with oxygen to form a new substance and heat. this is an example of a(n) ________ reaction. a. fusion b. fission c. exo…

A nail rusts when the iron in the nail reacts very slowly with oxygen to form a new substance and heat. this is an example of a(n) ________ reaction. a. fusion b. fission c. exo…
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A nail rusts when the iron in the nail reacts very slowly with oxygen to form a new substance and heat. this is an example of a(n) ________ reaction.

a. fusion
b. fission
c. exothermic
d. endothermic

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User FPGA
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It's a FUSION reaction because Iron and Oxygen react together to make Iron Oxide (rust) and it's EXOTHERMIC because the reaction forms heat (stated above), which means it's releasing energy. 
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User Nick Bastin
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