A steel railing rusts over time. Which statement best explains what happens
to the steel?
A. A new substance forms as iron in the steel interacts with air and
moisture.
B. A change of state occurs as the steel turns into rust.
C. The iron in steel dissolves in the moist air and recrystallizes as
rust.
O D. The color of the steel changes as it undergoes a physical change.


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