Which of the following is a chemical change? a) Conversion of water to ice b) Rusting of iron c) Crumpling a sheet of aluminum foil d) Casting silver

Which of the following is a chemical change?

a) Conversion of water to ice

b) Rusting of iron

c) Crumpling a sheet of aluminum foil

d) Casting silver

Solutions

Expert Solution

Answer : b) Rusting of iron

Explanation :

In rusting of iron, the oxidation state of iron changes, usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture.

The conversion of water to ice is not chemical reaction, its only phase change.

crumpling a sheet of aluminum foil and casting silver the chemical state remains same whereas the physical state changes.

b) Rusting of iron

Rakesh answered 2 years ago

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