What is rust and rusting? Why does iron rust? What type of a change is

1.	What is rust and rusting? Why does iron rust? What type of a change is this?
Answer» 1. When iron nails, iron gates, iron benches or pieces of iron are left is the open ground for a long time, we find a brown layer on the surface of iron articles. 2. This is called rust’ and process of forming this layer is called rusting. 3. When iron is exposed to air for a long time, the Oxygen present in air reacts with it in the presence of moist air and forms a new substance called iron oxide as rust on iron articles. This process is known as rusting. Iron + Oxygen (from air) + Water → rust (Iron oxide) 4. As a new substance is formed in this change, we call it a chemical change.

What is rust and rusting? Why does iron rust? What type of a change is this?

Answer»

1. When iron nails, iron gates, iron benches or pieces of iron are left is the open ground for a long time, we find a brown layer on the surface of iron articles.

2. This is called rust’ and process of forming this layer is called rusting.

3. When iron is exposed to air for a long time, the Oxygen present in air reacts with it in the presence of moist air and forms a new substance called iron oxide as rust on iron articles.

This process is known as rusting. Iron + Oxygen (from air) + Water → rust (Iron oxide)

4. As a new substance is formed in this change, we call it a chemical change.

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