Question

a) Do you think all nails will rust?
b) Where is the rusting maximum and minimum ?
c) What do you conclude from this experiment? give reason​

Answer 1

Answer:

Explanation:

a] All steel nails exposed to moisture eventually rust. Paint won't prevent rust either; in a couple of years the rusty nail head will bleed through the topcoat.

c]Rusting is the oxidation of metal, whereby the oxygen in the environment combines with the metal to form a new compound called a metal oxide. In the case of iron rusting, the new compound is called iron oxide… also known as rust!

Answer 2

a)Nails that are in contact with air and moisture will rust.

b)Rusting is maximum at surface and minimum below the surface.

c)Rusting is chemical reaction due to oxidation of metals.

Explanation:

• Nails that are in direct contact with atmosphere will rust due to oxidation. It can be prevented by painting the nails to protect it from being oxidized.
• Since the surface of the metal is most exposed to the atmosphere, rusting is maximum at the surface of metals and minimum below the surface.
• Rusting is a chemical reaction(erosion) and is caused due to oxidation of metal atoms. Rust is formed due to the reactions between iron and oxygen atoms in presence of moisture in air.