Question

2 why do the articles made of iron when placed in moist a'r get i
substance ? Is this process a physical or chemical change? Give reason to support your answer.​

Answer 1

ONE OF THE PROPERTIES OF IRON, IS THAT IT REACTS WITH OXYGEN IN PRESENCE OF MOSISTURE AND AIR ..AND GETS CORRODED WITH RUST IN REDDISH-BROWN COLOUR....

RUSTING OF IRON IS A CHEMICAL CHANGE...

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Answer 2

Answer:

The article made up of iron when placed in moist get reddish brown substance named Rust .This process is a chemical reaction because a new substance is formed in a reaction named iron oxide.

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