Q. 215.0( 4 Votes )
If you leave a pi
(a) Yes. Rust is iron oxide (Fe2O3) which is not same as Iron (Fe). Both are different substance.
(b) No. Rusting of iron is a chemical change resulting in the formation of new substance Iron oxide as product. It can’t be reversed by any simple method.
(c) Yes, rusting of iron is a chemical change. Iron combines with oxygen in presence of water to form a new substance ‘iron oxide’. The iron oxide is rust.
Iron (Fe) + Oxygen (O2, from the air) + water (H2O) —> rust (iron oxide Fe2O3)
It can’t be reversed. Hence, Rusting is a chemical change.
(d) Examples of similar type of chemical change are:
i) Burning of magnesium ribbon to form magnesium oxide.
ii) Souring of milk.
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