How to distinguish between metal, non metal by chemical method?

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Shruti Kaura

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Metal atoms have tendency to lose electrons and form cations. This tendency is called the electropositive nature. Metals generally have moderate to high electropositive nature.Metals form oxides which are generally ionic and basic in nature. If this basic oxide dissolves in water, it forms an alkali....
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Metal atoms have tendency to lose electrons and form cations. This tendency is called the electropositive nature. Metals generally have moderate to high electropositive nature.Metals form oxides which are generally ionic and basic in nature. If this basic oxide dissolves in water, it forms an alkali. For example, oxides of Na, K and Ca viz. Na2O, K2O and CaO are highly basic in nature and when dissolved in water, they form alkalies NaOH, KOH and Ca(OH)2. The oxides react with acids to form saltsNon – metal atoms have tendency to gain electrons and form anions or share electrons with other non-metals to form covalent bonds. Non - metals generally have moderate to high electronegative nature.Most non-metals do not react with non-oxidizing acids. They are not capable of replacing hydrogen from the acids and forming a salt. For example, C, S or P do not react with dilute and concentrated HCl or dilute H2SO4 to give off hydrogen. 2 P + 5 H2SO4 ? 2 H3PO4 + 2 H2O + SO2 Conc. read less
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By pH of respective oxide aqueous solution
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English teacher with 5 years of experience in teaching,• Instructed students in English language arts, including writing, reading comprehension, speaking, listening and understanding

Elements may be classified as either metals or nonmetals, based on their properties. Here's a look at the differences between the metals and nonmetals.Most elements are metals. On the periodic table, metals are separated from nonmetals by a zig-zag line stepping through carbon, phosphorus, selenium,...
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Elements may be classified as either metals or nonmetals, based on their properties. Here's a look at the differences between the metals and nonmetals.Most elements are metals. On the periodic table, metals are separated from nonmetals by a zig-zag line stepping through carbon, phosphorus, selenium, iodine and radon. These elements and those to the right of them are nonmetals. Elements just to the left of the line may be termed metalloids or semimetals and have properties intermediate between those of the metals and nonmetals. The physical and chemical properties of the metals and nonmetals may be used to tell them apart.Metal Chemical Properties have 1-3 electrons in the outer shell of each metal atom corrode easily (e.g., damaged by oxidation such as tarnish or rust) lose electrons easily form oxides that are basic have lower electronegativities are good reducing agentsNonmetal Chemical Properties usually have 4-8 electrons in their outer shell readily gain or share valence electrons form oxides that are acidic have higher electronegativities are good oxidizing agents read less
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By chemical method using Sodium Hydroxide as in Bayer's Process
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All metals act as reducing agents. Strongly electropositive metals like Mg, Al and Cr act as strong reducing agents while moderately electropositive elements like Zn, Cd and Sn act as moderate reducing agents. All non - metals ( except carbon ) act as oxidizing agents. Strongly electronegative elements...
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All metals act as reducing agents. Strongly electropositive metals like Mg, Al and Cr act as strong reducing agents while moderately electropositive elements like Zn, Cd and Sn act as moderate reducing agents. All non - metals ( except carbon ) act as oxidizing agents. Strongly electronegative elements such as F, Cl and O act as strong oxidizing agents while moderately electronegative elements like sulphur, bromine and iodine act as moderate oxidizing agents. Carbon sometimes acts as a reducing agent. However there are number of other methods to distinguish between metal, non metal by chemical method. In case you want all those please inform me accordingly . read less
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Metals are good reducing agents and non-metals are good oxidising agents.
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Reaction b/w metal and non-metal is always ionic.Ex:b/w Na and Cl bond formed is ionic...
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By chemical method...
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Metals on reaction with water form oxides or hydroxides while non metals on reacting with water produces strong or weak acids.. like carbonic acids , sulphuric acids.
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Chemistry Tutor

Metals as well as non metals reacts with oxygen to form respective oxides. When these oxides reacts with water metals form bases and non metals form acids.
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