4 Malleability Malleable and ductile. Neither malleable nor and ductile. Ductility 5 Electrical Good conductors of heat Generally poor and thermal and electricity. conductors of heat and conductivity electricity except graphite. 6 Luster Poses shining luster. Do not have luster except iodine. 7 Sonorous Give sonorous Does not give sound when struck. sonorous sound. 8 Hardness Generally hard except Solid non-metals are Na, K generally soft except diamond. Comparison of Chemical Properties of Metals and Non-metals:- 1 Reaction Metal + Oxygen Metal + Oxygen with oxide Non-metal oxide Oxygen 4Na(s) + O2(g) 2Na2O(s) C + O2 CO2 4Al(s) + 3O2(g) 2Al2O3 S + O2 SO2 Metals form oxides Non-metals form acidic Zn and Al form amphoteric oxides oxides (they show the CO and H2O are neutral properties of both acidic oxides(they are neither and basic oxides) acidic nor basic in Most of the metal oxides nature) are insoluble in water metal oxides are soluble Some of them dissolve to in water form Alkali They dissolve in water to Na2O(s) + H2O(l) form acids 2NaOH(aq) SO2 + H2O H2SO3 2 Reaction Metals with water to Non-metals do not react with water form metal oxides or metal with water, steam to hydroxide and H2 gas is evolve hydrogen gas. released. Because Non-metals 2Na(s) + 2H2O(l) 2NaOH cannot give electrons to + hydrogen in water so that it can be released as H2 H2(g) + heat gas.
metal 4 Malleability and Ductility Malleable and ductile. Neither malleable nor ductile. 5 Electrical and thermal conductivity Good conductors of heat and electricity. Generally poor conductors of heat and electricity except graphite. 6 Luster Poses shining luster. Do not have luster except iodine. 7 Sonorous sound Give sonorous when struck. Does not give sonorous sound. 8 Hardness Generally hard except Na, K Solid non-metals are generally soft except diamond. Comparison of Chemical Properties of Metals and Non-metals:- 1 Reaction with Oxygen Metal + Oxygen Metal oxide 4Na(s) + O2(g) 2Na2O(s) 4Al(s) + 3O2(g) 2Al2O3 Metals form oxides Zn and Al form amphoteric oxides (they show the properties of both acidic and basic oxides) Most of the metal oxides are insoluble in water Some of them dissolve to form Alkali Na2O(s) + H2O(l) 2NaOH(aq) + Oxygen Non-metal oxide C + O2 CO2 S + O2 SO2 Non-metals form acidic oxides CO and H2O are neutral oxides(they are neither acidic nor basic in nature) oxides are soluble in water They dissolve in water to form acids SO2 + H2O H2SO3 2 Reaction with water Metals with water to form metal oxides or metal hydroxide and H2 gas is released. 2Na(s) + 2H2O(l) 2NaOH + H2(g) + heat Non-metals do not react with water, steam to evolve hydrogen gas. Because Non-metals cannot give electrons to hydrogen in water so that it can be released as H2 gas.
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