The oxygen that is dissolved in the water.
You rust a nail in either salt water or in vingar that what makes a nail rust
The dissolved oxygen in the water reacts with the nail to form rust.
The Oxygen in the water reacts with the iron in the nail, making Ferrous Oxide
The water (H2O) in it.
The acid in the drink makes the nail rust. The nail would rust if you put it in any liquid, but acid makes it rust faster.
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)
It either cleans the nail, or makes the nail have rust.
The water and the air makes a chemical change to the nail to make it rust
I'm not so good at science but I think The Oxygen from the water (H20) oxidises the iron and makes iron oxide, which is rust.
The oxygen in the water reacts with the metal in the nail - forming metal oxide (rust)
A nail will rust faster in wet soil than water, but if the soil is not wet , the nail will rust faster in water. I hope this answers your question. Bye, Annette Pfohl
Salt water does make nails rust faster than non-salted water, because when salt is added to water, it will rust the top layer of the nail, and then make the nail basically shed its top layer. Then the salt will rust that layer, and this process continues until the whole nail is rusted. Normal water can only really rust the top layer, and can't get to the rest of the nail.