Aman: Rusting of iron is a chemical change. |
Puja: Rusting of iron is a physical change. |
Who is correct? |
John: Melting of wax is a physical change whereas burning of wax is a chemical change. |
Ibrahim: Melting of wax is a chemical change whereas burning of wax is a physical change. |
Who is correct? |
You need to login to perform this action.
You will be redirected in
3 sec