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3.0 Density: Alkali metals have low density. The term "ferrous" is derived from the Latin word meaning ... Brittle metal. Ans: A chemical element (such as boron, carbon or nitrogen) that lacks metal properties and is capable of forming anions, acid oxides, acids, and stable hydrogen compounds. What defines a nonmetal? In this chapter we will learn about metals and non-metals. What are examples of nonmetals? A zigzag line runs down the right side of the table. → Atoms of the metals lose electrons from their valence shell to form cation. Do you remember learning about materials in Grade 4. Ans: Hydrogen, hydrogen, chlorine, fluorine, carbon, nitrogen, arsenic, phosphorus, selenium are examples of non-metal. In Electric Lighting. Both may occur in solid and liquid form. Thus Materials is a set and metals and non-metals are sub-sets of that set. Main articles: Ferrous metallurgy and Non-ferrous metals. Non-metals have a tendency to gain or share electrons with other atoms. Examples of non-metals are Iodine, Bromine, Helium, Neon, and Argon while that of metalloids are Arsenic, Tellurium, Antimony, Polonium, Tennessine, etc. Heavy and light metals. Each class has its own unique properties. Metals and non-metals are two different classes of materials. Answer. In the outer shell, metals consist of 1 to 3 electrons, whereas non-metals consist of 4 to 8 electrons. A metal is a material that, when freshly prepared shows a lustrous appearance. (ii) Two metals which are used to make jewellary. Since the discovery of the light bulb, the metal tungsten was widely used to … They cannot be beaten into thin sheets or drawn into wires because of their brittleness. Copper is used in making electric wires, gold is used to make … A metal is an element which is typically hard, shiny, fusible, malleable, and ductile, with good electrical and thermal conductivity. Metals vs Non-metals. : Formation of NaCl Na → Na + + e-2, 8, 1 2, 8 Sulfur, bromine, and helium are typical non-metals. Occurence of Metals. Non-metals, on the other hand, are materials lacking these properties. The rows of the table are called periods and columns are called groups. Thus, non¬metals are also known as Electronegative Elements. Metals and Non-metals Class 10 Important Questions Long Answer Type. Do you wish to test out your understanding on the two types of materials? Metals and non-metals have particularly distinguishing characteristics which separates them from one another. Atom of the non-metals gain electrons in the valence shell to form anion. But the diamond is an exception; it is the hardest naturally occurring substance. 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