Most metals, for instance, react to oxygen over time, in a process known as oxidization. Metals are usually malleable, ductile, and shiny. Metals are a large group of elements with a common atomic arrangement, and subsequently similar physical and chemical properties. Recall the general properties of metallic elements. Metallic oxides: Metals can form oxides. Wiktionary This feature helps in other uses like thermostats, forming desired shapes etc. An example is the reaction with oxygen in the air to form oxides over various timescales (iron rusts over years, while potassium burns in seconds). Metals in general are conductive, with high electrical conductivity and high thermal conductivity. 6 elements (boron, silicon, germanium, arsenic, antimony, and tellurium) are commonly classified as metalloids and have a blend of metallic and non-metallic properties. PROPERTIES OF METALS •Important properties of metals include: –are good conductors of heat and electricity ( charged particles, electrons, are free to move). Corrode: Metals tend to get oxidized when exposed to air and get corroded. Materials are distinguished as above, … Conductivity: Metals are good conductors of heat and electricity. 7. Mechanical Properties of Metals Definition. –are ductile. The electrical and thermal conductivities of metals originate from the fact that their outer electrons are delocalized. Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides. Metals are usually malleable, ductile, and shiny. High melting points: Metals have high melting point. How reactive a metal is determines which reactions the metal participates in. They are used to make pans, since they are good conductors of heat. CC BY-SA 3.0. http://en.wikipedia.org/wiki/Metal%23Structure_and_bonding –are malleable. 1. Metals are typically malleable and ductile, deforming under stress without cleaving, and they are also shiny and lustrous. Different metals can react with acid, water and oxygen. There are many types of metals in nature and they are widely used by man in daily life. Boundless Learning This means the electrons are not locked into any one atom but can move freely throughout the metal. 4. Insoluble: Metals are insoluble in water or any other solvents. Properties of the Basic Metals Element Group Examples of Metals. They have very high melting and boiling points because metallic bonding is very strong, so the atoms are reluctant to break apart into a liquid or gas. 5. The measurable properties that allow a metal to resist external forces without failing are its mechanical properties. 6. Metals are located on the left side and the middle of the periodic table. 4. Metals can be viewed as a collection of atoms embedded in a sea of electrons, which are highly mobile. Wikibooks Hardness: Metals are very hard by nature (except few like mercury) and they cannot be easily torn or broken. CC BY-SA 3.0. http://en.wiktionary.org/wiki/conductive Metals are usually inclined to form cations through electron loss, reacting with oxygen in the air to form oxides over various timescales: for example, iron rusts over years, while potassium burns in seconds. The chemical elements can be broadly divided into metals, metalloids and nonmetals according to their shared physical and chemical properties. The solid produced is held together by electrostatic interactions between the ions and the electron cloud, which are called metallic bonds. Wiktionary ; The unique combination of properties makes metals useful for a wide variety of purposes, ranging from the building of skyscrapers to electronics and the crafting of fine jewellery. Acidity and Alkalinity:. 8. Some metals form a barrier layer of oxide on their surface, which cannot be penetrated by further oxygen molecules. Wiktionary 2. High molecular weights: Metals have high atomic number and also atomic weights. This particular resource used the following sources: http://www.boundless.com/ CC BY-SA 3.0. http://en.wiktionary.org/wiki/metal The properties of metals and alloys Reactions of metals. metalAny of a number of chemical elements in the periodic table that form a metallic bond with other metal atoms; generally shiny, somewhat malleable and hard, often a conductor of heat and electricity. 9. Wikipedia The properties of the metal are defined as the special qualities or characteristics of metals that determine their suitability for a specific engineering application. All metals have a shiny appearance (at least when freshly polished); are good conductors of heat and electricity; form alloys with other metals; and have at least one basic oxide. Metals are used in a number of industrial structures. The chemical properties of metals refer to how the substances react with other elements. Hence metals like gold, silver, platinum, copper have heavy use for decorative jewelry. Oxidization is what accounts for the rust on iron or the corrosion of copper.Some metals react with acids, while others, such as sodium, react strongly and violently to water. Elements can be divided into metals and nonmetals and it is important to know whether a particular element is a metal or nonmetal.Metals (like copper and aluminium) are good conductors of heat and electricity, while nonmetals (such as phosphorus and sulfur) are insulators. Hence they appear to be heat resistant. CC BY-SA 3.0. http://en.wiktionary.org/wiki/ductile Metals are substances which we see in daily life like keys, chains, jewellery etc.