air resistance
fluid friction
sliding friction
All the bats living in a cave form a __colony__of bats in the cave ecosystem.
According to the law of conservation of mass of reactants before the reaction must be equal to the mass of the product. He is wrong because the nail is undergoing the process of rusting and after the rusting process mass of the product is increasing.
According to the law of conservation of mass of reactants before the reaction must be equal to the mass of the product.
Rusting is a form of oxidation. Rust is formed when iron combines with water and oxygen to generate hydrated ironoxide. Which is given by.
Nail contains iron when combined with oxygen results in the formation of ferrous oxide which is heavier than iron. That's why the mass of the product is more than the mass of reactants. ]
Hence after a few months seems larger and heavier than it was before.
To learn more about rusting refer to the link;