Question

William finds a piece of pure iron in his garden. After a few days, the iron begins to rust. What are the two types of substances involved in the rusting process of iron?

Answer 1

The two things are-MOISTURE and air

Answer 2

Answer: The two substances involved in the process of iron is air and moisture.

Explanation:

Rust is defined as the reddish-brown coating on iron when this metal comes in contact with air and moisture. The chemical name of rust is Ferric oxide and chemical formula for this is $Fe_2O_3$

The equation for the formation of rust is given by the reaction:

$4Fe(s)+3O_2(g)+xH_2O\rightarrow 2Fe_2O_3.xH_2O$

Hence, the two substances involved in the process of iron is air and moisture.