DEFINITION OF AN ANODE. âAn ingot of sacrificial metal attached to the underwater hull of a narrowboat or canal boat which corrodes due to electrolysis more readily than the hull and propeller. Magnesium anodes are used for boats in fresh water.Aluminium anodes are used for boats in brackish water.nodes will offer protection based on the Noble Series of metals. The theory is that by attaching a piece of metal to the hull that is more reactive than the hull itself then this piece of metal will corrode first. For our inland waters we use sacrificial magnesium anodes for protection.
Pure water is an insulator, since it doesn't contain any charged particles to act as conductors. However, water is an excellent solvent for charged particles like salts, so it's unheard of to find pure water in nature.
Electricity is conducted in water from the movement of ions from one place to the other. These ions are the charge carriers which allow water to conduct electricity. Since there are no ions in a covalent compound, they don't conduct electricity in water. 5) Covalent compounds are insoluble in water.here are a couple of exceptions to this rule. The first is with covalent compounds that contain neither carbon nor hydrogen. These tend not to burn, and if they do, they burn by mechanisms other than the classic combustion reaction. The other exception comes with ionic compounds referred to as organic salts.