Wiktionary Metals are usually malleable, ductile, and shiny. –are often hard … 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. Typical nonmetals have a dull, colo… The properties of the metal are defined as the special qualities or characteristics of metals that determine their suitability for a specific engineering application. Some examples include iron, zinc, mercury, sodium, lead etc. –are ductile. Metals. Luster: Metals have shiny surfaces. Density & Weight: Metals have very high density. Corrode: Metals tend to get oxidized when exposed to air and get corroded. Acidity and Alkalinity:. Metals are substances which we see in daily life like keys,  chains, jewellery etc. They are used in electrical cables, because they are malleable, ductile and good conductors of electricity. Materials are distinguished as above, … 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. 2. Heat can alter the mechanical properties of any metal like making a soft metal hard and then soft again. 3. High melting points: Metals have high melting point. Stretching and malleability: Most metals show the property of expansion on heating. Wiktionary Most metals, for instance, react to oxygen over time, in a process known as oxidization. Metals are shiny and lustrous with a high density. Acidity is the Acid characteristics of the metals. The electrical and thermal conductivities of metals originate from the fact that their outer electrons are delocalized. 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). . Hence they easily give out electrons and tend to from ionic bonds. Those ions are surrounded by de-localized electrons, which are responsible for the conductivity. Hardness: Metals are very hard by nature (except few like mercury) and they cannot be easily torn or … This makes more durable and hence can be used for long standing needs like buildings, bridge construction etc. Metals like iron,  aluminum are widely used in construction of heavy machines and also constructions. 7. This particular resource used the following sources: http://www.boundless.com/ 4. 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. 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. They have properties different than non-metals. This feature helps in other uses like thermostats, forming desired shapes etc. Alkaline is the characteristic … ; 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. Hence they appear to be heat resistant. Metals typically consist of close-packed atoms, meaning that the atoms are arranged like closely packed spheres. Recall the general properties of metallic elements. CC BY-SA 3.0. http://en.wikipedia.org/wiki/Metal%23Structure_and_bonding For example, hitting a metal with a hammer will “dent” the metal, not shatter it into pieces. Wikipedia The chemical elements can be broadly divided into metals, metalloids and nonmetals according to their shared physical and chemical properties. Boundless Learning Wikibooks Importance of Education in Life & Society, Cells in the Human Body | 14 Types with Examples and Functions, Organs of the body | Their Locations and Internal Functions, 14 Uses of Plants & their Importance to Humans & Nature, 10 Types of Chromatography | Based on Different Techniques & Methods, Grammarly Premium Review | A Complete Writing Assistant, Types of Pollution | Their Causes and extent of Damage, 9 Different Types of Spectroscopy Techniques & their Uses, 15 Secreting Organs in Human Body | Their ListLocations & Functions, 6 Types of birds | Scientific Classification with Characters & Pictures, 5 Special Sense Organs | Their Location and Functions in the Body. Some metals form a barrier layer of oxide on their surface, which cannot be penetrated by further oxygen molecules. 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