2. a)List the names of three nonmetals you are familiar with in your daily life. There is much to be learned when it comes to the properties of these two. (ii)Mercury is liquid metal, bromine is liquid non-metal. Occurence of Metals. Table 3.1 Element Symbol Type of Hardness Malleability Ductility Conduction Sonority surface Heat Electricity On the bases of the observations recorded in Table 3.1, discuss the 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. Over the span of several years, many scientists have stumbled across new and unknown substances which they have taken much time and effort to study and figure out— some of these materials have turned out to be beneficial and valuable to man’s needs, while others, interestingly, simply exist in the environment we live in. → Atoms of the metals lose electrons from their valence shell to form cation. Metals and Non-metals Class 10 Important Questions Long Answer Type. Non-metals have a tendency to gain or share electrons with other atoms. Metals are materials holding or possessing the characteristics of being shiny, hard, fusible, malleable, ductile, etc. Ans: Hydrogen, hydrogen, chlorine, fluorine, carbon, nitrogen, arsenic, phosphorus, selenium are examples of non-metal. Metals and non-metals have particularly distinguishing characteristics which separates them from one another. Few examples of metals (materials) are – Gold, Silver, Aluminium, Copper, Iron, etc. Carry out the Activities 3.1 to 3.6 with these non-metals and record your observations. There are a few exceptions. With the exception of graphite, non-metals are weak hea… Both may occur in solid and liquid form. But the diamond is an exception; it is the hardest naturally occurring substance. Metals are the elements which exhibit the highest degree of metallic behavior is known as metals, on the contrary Non-metals are such elements which do not possess any metallic behavior, and Metalloids are those elements, that possess some of the properties like metal, while some like non-metal. This video covers the difference between the properties of metals and non-metals, and takes a look at transition metals. Compile your observations regarding metals and non-metals in Table 3.1. Metals have a very high melting and boiling point. 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. • Reaction of Metals with Non-metals → Reactivity of elements is the tendency to attain a completely filled valence shell. For examples, diamond is a good conductor of heat and graphic is a good conductor of electricity. A large number of metals are available in nature. Non-Metals. 2.0 Melting point: Some metals like sodium potassium have low melting point, mercury is liquid at room temperature.Carbon a non-metal has a high melting point. Since the discovery of the light bulb, the metal tungsten was widely used to … They are electronegative in character. They cannot be beaten into thin sheets or drawn into wires because of their brittleness. Conversely, non-metals are insulators, and so they do not support conduction of heat and electricity. We have encountered the terms 'METALS' and 'NON-METALS' many times. 1.0 Lustre: Not only metals have metallic lustre but certain non-metals like iodine and graphite have also a metallic lustre. Non-metals do not show such displacement reactions. If you said yes then the quiz … (a) In the formation of compound between two atoms A and B, A loses two electrons and B gains one electron. 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. 2. They can be classified in a variety of ways depending on what property or characteristic you use as a yardstick. E.g. If you would like to know Gujarati name of any other metal or non-metal or even mineral, you can contact us through the comment section. Sulfur, bromine, and helium are typical non-metals. Alloys made of mixtures of at least one metal with either other metals, or with non-metals. are not able to conduct electricity or heat very well, very brittle (breakable), and cannot be made into wires or pounded into sheets. Thus, non¬metals are also known as Electronegative Elements. b) For each metal you listed in (a), describe two different uses for each. Elements on this line are metalloids or semimetals, which have properties intermediate between those of metals and nonmetals. Non-metals may occur as gases at room temperature. What defines a nonmetal? A metalloid is an element having intermediate properties of both metals and nonmetals. What are examples of nonmetals? For e.g. List of Gujarati Names of Metals and Non-metals from English Here is a list of Gujarati names of metals and non-metals from English. Classification of nonmetals. How to Tell Metals and Nonmetals Apart . Hardness: Most of the metals are hard, except alkali metals, such as sodium, potassium, lithium, … Similarities - both are materials. Non-metals don’t react with dilute acids, but all the metals react with chlorine to form ionic metal chlorides. Copper is used in making electric wires, gold is used to make … Nonmetals, when reacting with metals, tend to gain electrons (typically attaining noble gas electron configuration) and become anions: $\ce{3Br2(l) + 2Al(s) \rightarrow 2AlBr3(s)} \nonumber$ Example, it may conduct electricity well but is brittle ( and,... 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