Thus Materials is a set and metals and non-metals are sub-sets of that set. (ii) Two metals which are used to make jewellary. : Formation of NaCl Na → Na + + e-2, 8, 1 2, 8 2. a)List the names of three nonmetals you are familiar with in your daily life. Elements on this line are metalloids or semimetals, which have properties intermediate between those of metals and nonmetals. The chemical elements can be broadly divided into metals, metalloids and nonmetals according to their shared physical and chemical properties. The rows of the table are called periods and columns are called groups. For examples, diamond is a good conductor of heat and graphic is a good conductor of electricity. We have encountered the terms 'METALS' and 'NON-METALS' many times. Nonmetals, when reacting with metals, tend to gain electrons (typically attaining noble gas electron configuration) and become anions: \[\ce{3Br2(l) + 2Al(s) \rightarrow 2AlBr3(s)} \nonumber\] Both may occur in solid and liquid form. Introduction to Non metals. Some of the common examples of metals are copper, silver, gold, aluminium etc. Metals and Non-metals Class 10 Important Questions Long Answer Type. The easiest way to identify whether an element is a metal or nonmetal is to find its position on the periodic table. In contrast, non-metals are boiled and melted at a relatively low temperature. Do you remember learning about materials in Grade 4. Ans: substance whether solids, liquids, or gases can be metals. In Electric Lighting. (i) Nickel and chromium. Occurence of Metals. → Atoms of the metals lose electrons from their valence shell to form cation. A zigzag line runs down the right side of the table. In this chapter we will learn about metals and non-metals. Since the discovery of the light bulb, the metal tungsten was widely used to … They are electronegative in character. Non-metals are bad conducts of heat and electricity, Many non-metals are insulators. • Reaction of Metals with Non-metals → Reactivity of elements is the tendency to attain a completely filled valence shell. Hardness: Non-metals are not hard rather they are generally soft. Similarities - both are materials. b) For each metal you listed in (a), describe two different uses for each. Heavy and light metals. Metals and non-metals are two different classes of materials. Ans: Hydrogen, hydrogen, chlorine, fluorine, carbon, nitrogen, arsenic, phosphorus, selenium are examples of non-metal. How to Tell Metals and Nonmetals Apart . The term "ferrous" is derived from the Latin word meaning ... Brittle metal. (i) Sodium, carbon (diamond). 1.0 Lustre: Not only metals have metallic lustre but certain non-metals like iodine and graphite have also a metallic lustre. Metals are materials holding or possessing the characteristics of being shiny, hard, fusible, malleable, ductile, etc. 2. Properties of non-metals are usually the opposite of properties of metals; Non-metals can be solid, liquid, or gas at room temperature depending upon the element. A nonmetal is an element that does not have the properties of a metal. Refractory metal. A metal is an element which is typically hard, shiny, fusible, malleable, and ductile, with good electrical and thermal conductivity. Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides. What are nonmetal and metal? White metal. There are a few exceptions. have properties of both metals and non-metals. But the diamond is an exception; it is the hardest naturally occurring substance. Intermediate between those of metals and nonmetals according to their shared physical and chemical properties and 'NON-METALS many! On the periodic table and columns are called groups carbon ( diamond ) common of! From the Latin word meaning... 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