Rusting of an article made up of iron is called :
Rusting of an article made up of iron is called :
The correct option is C Corrosion and it is a chemical change
The explanation for the correct option:
Option (C):
As we know that the physical changes only change the appearance of a substance but not the chemical composition while the chemical changes cause a substance to change into an entirely different substance with a new chemical formula. The chemical changes involve a chemical reaction.
Corrosion:
- The gradual destruction of pure metals by the action of air, moisture, or a chemical (such as an acid) on their surface is called corrosion.
Rust:
- Rust is a chemical reaction (oxidation) of Iron that occurs over a period of time as the bare metal surface comes in contact with Oxygen present in Air or Water.
- Rust eats away the metal, rendering it weak and fragile.
- Rusting of an article made up of Iron is called corrosion.
- Rusting of Iron consists of its chemical formula also known as hydrated Iron oxide.
- The chemical reaction involved is
Option (A)-Corrosion is a physical as well as chemical change
Rusting of an article made up of Iron is called corrosion but it is a chemical change, not a physical change.
Option (B)-Dissolution is a physical change
Dissolution is the process where a solute in a gaseous, liquid, or solid phase dissolves in a solvent to form a solution. It is not related to rusting of Iron also, rusting of Iron is a chemical change, not a physical change.
Option (D)- Dissolution is a chemical change
Dissolution is the process where a solute in a gaseous, liquid, or solid phase dissolves in a solvent to form a solution. It is not related to rusting of Iron but rusting of Iron is a chemical change.
Hence, option (C) is correct.
Corrosion and it is a chemical change
The explanation for the correct option:
Option (C):
As we know that the physical changes only change the appearance of a substance but not the chemical composition while the chemical changes cause a substance to change into an entirely different substance with a new chemical formula. The chemical changes involve a chemical reaction.
Corrosion:
- The gradual destruction of pure metals by the action of air, moisture, or a chemical (such as an acid) on their surface is called corrosion.
Rust:
- Rust is a chemical reaction (oxidation) of Iron that occurs over a period of time as the bare metal surface comes in contact with Oxygen present in Air or Water.
- Rust eats away the metal, rendering it weak and fragile.
- Rusting of an article made up of Iron is called corrosion.
- Rusting of Iron consists of its chemical formula also known as hydrated Iron oxide.
- The chemical reaction involved is
Option (A)-Corrosion is a physical as well as chemical change
Rusting of an article made up of Iron is called corrosion but it is a chemical change, not a physical change.
Option (B)-Dissolution is a physical change
Dissolution is the process where a solute in a gaseous, liquid, or solid phase dissolves in a solvent to form a solution. It is not related to rusting of Iron also, rusting of Iron is a chemical change, not a physical change.
Option (D)- Dissolution is a chemical change
Dissolution is the process where a solute in a gaseous, liquid, or solid phase dissolves in a solvent to form a solution. It is not related to rusting of Iron but rusting of Iron is a chemical change.
Hence, option (C) is correct.
