Amphoteric Oxides are those oxides that react both with acid and base to produce salt and water. Metals like zinc, aluminium and lead form amphoteric oxides.These metallic oxides formed are soluble in water and forms soluble hydroxides. Very reactive metals like sodium, potassium and calcium react vigorously with water to form their respective oxides without the need for heat.Metal +Oxygen в†’ Metal Oxide (Heat) (basic) There are some oxides that are also soluble in water.

Reaction with oxygen and the nature of the oxide- Metals reacts with oxygen to form their respective oxides.Reducing Nature- Metals are good reducing agents since they lose electrons.Formation of Ions- Metals loses electrons during a chemical reaction and form positively charged ions called cations.Valency- Metals have +1, +2 or +3 valency.Electronic Configuration- Metals have either 1, 2 or 3 electrons in their valence shell in their electronic configuration.Following are some chemical properties of Metals Now, having discussed the physical properties of metals, letвЂ™s now discuss the chemical properties of metals Chemical properties of MetalsД¬hemical properties are the characteristics shown by a substance when it undergoes chemical reactions. Tensile Strength- All metals except zinc has high tensile strength.Solubility- Metals are either soluble in water or in organic solvents like toluene.Thermal and electrical conductivity- Metals are good conductors of heat and electricity.Sonority- Metals when struck by a hard object they produce a sound.Gold, silver, copper are highly malleable. Malleability- Malleability means that they can be hammered or beaten to sheets.Melting and Boiling Points- Metals usually have high melting and boiling points.Hardness- Almost all the metals are hard solids except sodium and potassium which can be cut through a knife.Density- Metals have a high density (except sodium, potassium and lithium).In other words, they shine when they are polished. Metallic Lustre- Metals in their pure state shine.State- Metals are hard and crystalline solids (except mercury вЂ“ which is a liquid).

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