Which is an example of a chemical reaction? Explain
a
Sugar dissolving in water.
b
Rubbing alcohol evaporating
c
An iron nail rusting
d
Gold melting
c
An iron nail rusting
In this example, the iron in the nail reacts with oxygen in the presence of moisture to form iron oxide, which is commonly known as rust. This chemical reaction is evident by the change in color and texture of the iron nail as it undergoes oxidation.