Oxidization of the metal.
It's not just saltwater that makes a nail rust, even water makes a nail rust. Rust is simply oxidation, it happens when oxygen comes into contact with something and creates a chemical reaction and creates "oxides". Iron + oxygen = Iron oxide (red rust on steel)
You rust a nail in either salt water or in vingar that what makes a nail rust
Tomato juice can rust a nail due to its acidic nature and the presence of salt. The acidity in the juice can break down the protective coating on the nail, while the salt can accelerate the oxidation process when it comes into contact with moisture. This combination creates an environment conducive to rust formation, as iron in the nail reacts with oxygen and water to produce iron oxide, or rust.
The salt in the water will speed up the iron nail because the chemicals in the salt water on the nail creates faded substances
The best solution to rust a nail is to apply a rust converter or a rust inhibitor. This will help to neutralize the rust and prevent further corrosion. Sanding the nail to remove the rust and then painting it with a rust-resistant paint can also be effective.
It either cleans the nail, or makes the nail have rust.
Oil creates a barrier on the surface of the nail, preventing moisture and oxygen from reaching the metal. Without moisture and oxygen, the nail cannot undergo the chemical reaction that results in rusting.
The dissolved oxygen in the water reacts with the nail to form rust.
Most commonly, the coating on a nail that resists rust is zinc.
They combine to form rust. You might be able to guess from what's combining that "rust" is apparently an iron oxide.
The oxygen in the water reacts with the metal in the nail - forming metal oxide (rust)
It depends on the quality of the nail. If it is painted it Amy take long to rust. In general it may take a month or so for the nail to rust.