Painting of iron prevent it from rusting because it prevent the iron articles coming in Contact with oxygen, or water vapours present in the air.
no rusting iron is not a physical change it is a chemical change
Rusting is the oxidation of iron. To prevent rusting you must prevent oxygen from coming into contact with the product. This is normally acheived by applying a barrier of oil in working environments. Products are available for storing materials for long periods to avoid rusting. These have a more waxy nature than oil and would not be suitable to use to stop rusting in a mechaincal item. Of course if you want to prevent rusting and for it to look nice. various paints and lackers can be applied. Chemical coatings can also be applied to prevent rusting. Or simply keep the item clean and dry and rusting can be slowed.
Iron rusting is a chemical change in which iron reacts with moist air to form fe2o3 commonly known as rust, a brown coloured coating.
Iron is a highly reactive metal and when exposed to air, water and moisture, it starts reacting with them and forms rust. Basically rusting is the reaction of iron with oxygen and iron is nothing but iron oxide(Fe2O3). Iron things can be protected from rusting by using paints, galvanization etc.
Rusting is a reaction which combines molecules to form other molecules: metal + oxygen -> rust. The definition of a chemical reaction is molecules turning into other molecules, so rusting is a chemical reaction.
Paint or enamel can protect iron from rusting.
Paint can protect iron from rusting, especially if it is the right kind of paint - you would not want to use a water based acrylic paint, since the water in the paint would promote rusting, rather than preventing it.
Rusting is caused due to exposture of iron to moisture. When iron articles are painted, it is not exposed to the atomospheric moisture. This is how paint stops rusting
To stop them rusting.
The Eiffel Tower needs about 60 tons of paint to protect it from rusting, which is roughly equivalent to 60,000 liters.
when we apply paint on iron articles moist air cannot attack iron and prevent rusting
Keep it dry. Paint it Galvanize it
Iron objects are painted before use to prevent them from rusting. Paint does not let the moisture to get inside it and prevent iron's quality from rusting.
Applying paint on iron articles helps to protect them from rusting and corrosion. The paint acts as a barrier between the iron surface and external elements like moisture and oxygen, which can cause rust to form. Additionally, paint can improve the appearance of iron articles and provide a smooth, colored finish.
I'll give a non chemist answer but a wise answer... logically, you are covering it with a mixture (correct this If Im wrong), preventing it to have contact with the oxygen in the atmosphere. Therefore preventing the iron to oxidize :)
Try covering it in Zinc
One element that can protect iron from rusting and has good electrical conductivity is zinc. Zinc can be used as a sacrificial coating on iron surfaces through a process called galvanization, where the zinc layer corrodes instead of the iron. This protects the iron from rusting while providing good electrical conductivity.