a nail that is made from steel
Nails are made of iron, but pennies are copper and zinc. Iron reacts with oxygen to form rust, but copper on the outside of a penny does not.
Nails do not rust in water. Nails only rust in water if oxygen is present. This is because the iron in nails react with oxygen and water to form a compound called hydrated iron(III) oxide.
Any water makes iron rust. Rust is iron oxide. It happens when water allows the oxygen to dissolve in it and get to the surface of the metal. Salt water has dissolve salts in it which makes it work faster.
Rusting of iron is chemical. It is the combination of oxygen with the iron, creating a different chemical: rust or iron oxide.
iron nails are nails made up of iron
rusting of iron is faster in rainy days because water is responsible for the rusting of iron i.e the presence of oxygen
oxygen causes iron to rust
A nail made out of just iron will rust really fast if it is exposed to oxygen. Nails available now, are galvanized nail which has a coating of copper metal on the surface of iron nail. This slows down process of rusting. Exposing a iron nail to water and other acidic environment along with oxygen, can make a nail rust pretty fast.
because the corrosion of iron ( rust ) requires water and oxygen the oil prevents oxygen from coming into contact with the nail
If both t etap water and the distilled water are open to the air and both have dissolved oxygen then the iron nail will rust faster in tap water. Rusting requires dissolved oxygen and goes faster if there are dissolved salts.
Iron generally corrodes faster because the oxide layer (rust) does not seal the metal's surface from oxygen like the corrosion on copper does.
Nails are often made of steel. One of the major components of steel is iron. The iron in the nail reacts with oxygen in the air and oxidizes (from an oxidation state of 0 to +3 through several intermediate steps). The reaction is between the iron and the oxygen, but water must also be present because the types of oxidation reactions involved happen in a water solution. This produces hydrated (surrounded by water) iron oxide compounds. Because iron oxide is an ionic compound, not a metal, it no longer binds strongly to the rest of the nail and flakes off as rust. This can eventually make the nail disintegrate.