by saying protein is amphoteric means that it contains both acidic property and basic property
Sodium chloride is not amphoteric.
amphoteric
ZnO is amphoteric- i.e. it dissolves in acids and bases. Magneisum isn't! Manganese dioxide is MnO2 disolves in potassium hydroxide. Is that what you mean?
amphoteric
Water is an amphoteric substance.
Amphoteric properties of proteins due to the presence of free carboxylic and free amino groups at the end of protein it can react with acids and bases. In acidic medium protein carries positive charges at amino group and in alkaline medium it carries negative charges at carboxylic group.
No, in order for a substance to be considered amphoteric it must be able to act as an acid and a base. Sodium sulfite will only act as a base, and thus it is not amphoteric.
The oxides of sodium and calcium are not amphoteric: They are strongly basic. The most common amphoteric oxides are silica and alumina.
sulphate ion is not amphoteric because according to Bronsted-Lowry concept an amphoteric specie is that which can donate as well as accept aproton but sulphate ion is not capable of donating proton so it is not amphoteric
An amphoteric compound can act as an acid but also as base.
Yes, Glycine is amphoteric. It can act as an acid or as a base (or alkaline).
no amonia is not amphoteric it is simply base