1 / 4Ever since childhood, we have heard a saying from the elders, 'Keep working, otherwise your body will rust like iron.' You may have seen rust on iron objects in the house. But, have you ever wondered why the iron rusts?2 / 4When you bring a new iron object into the house, it looks very shiny. But, if water falls on this iron, it starts rusting. Often you don't pay attention, but if a new iron object is constantly watered, a red layer builds up on it.3 / 4Iron is considered to be a very strong metal, but its hardness begins to weaken when water falls on it. Once the iron has rusted, it cannot be reused. As a child, we learned in science books that when iron comes in contact with oxygen and moisture.4 / 4Rust is the gradual disappearance. When the metal comes in contact with moisture, it rusts. Iron rust is a serious problem. You have often seen black coating not only on iron but also on silver. In addition, copper also has a green coating.