In chemistry, an amphoteric compound (from Greek amphoteros 'both') is a molecule or ion that can react both as an acid and as a base. [1] What exactly this can mean depends on which definitions of acids and bases are being used.

There are five amphoteric elements (metals) in the periodic table Be, Al, Zn, Sn, Pb. Also those elements oxides and hydroxides are amphoteric compounds. Amphoteric elements and compounds react with both acids and bases and give relevant products.

2021年2月24日 · In chemistry, an amphoteric substance is a chemical species that can act as both an acid and a base, depending on reaction conditions. The phenomenon is called amphoterism . Amphoterism applies to Bronsted-Lowry and Lewis acids and bases .

Amphoteric oxides are oxygen compounds that show both acidic and basic characteristics. These oxides undergo a neutralisation reaction to form water and salt as they react with acid. This demonstrates the essential properties of the compounds.

2023年1月16日 · Amphoteric species are molecules or ions that can react as an acid as well as a base. The word has Greek origins, amphoteroi (άμφότεροι) meaning "both". Many metals (such as copper, zinc, tin, lead, aluminium, and beryllium) form amphoteric oxides or hydroxides.

2019年9月22日 · An amphoteric substance is one that can act as either an acid or a base, depending on the medium. The word comes from the Greek amphoteros or amphoteroi, meaning "each or both of two" and, essentially, "either acid or alkaline."

2023年6月30日 · An amphoteric oxide is one which shows both acidic and basic properties. This trend applies only to the highest oxides of the individual elements (see the top row of the table), in the highest oxidation states for those elements. The pattern is less clear for other oxides.