Question

repair Intex card for any four metal metal and nonmetal card should have its physical and chemical properties and its uses

Answer 1

Name: CopperPhysical properties:1) Good conductor of electricity2) Good conductor of heat.3) Very ductileChemical properties1) It produces green coloured rust on reaction with water, oxygen and carbon dioxide present in the air. The rust contains copper hydroxide and copper carbonate.2) It can be replaced from its salt solution by reactive metal. Fe + CuSO4 --> FeSO4 + CuUse:It is used in electrical wiresas it is a good conductor ofelectricity and very ductile.Name: AluminiumPhysical properties:1) Good conductor of electricity.2) High tensile strength.3) Very malleable.Chemical properties-1) It reacts with the base.Aluminium + potassium hydroxide --> potassium aluminate + hydrogen2) It reacts with acid.2Al + 6HCl --> 2AlCl3 + 3H2Uses:Aluminium foil, which is very light, is used to pack food, medicines etc. Aluminium is also used for making wires and utensils.Name: MagnesiumPhysical properties:1) It is very light, its densityis two third of aluminium.2) Very malleable.Chemical properties:1) React with oxygen:2Mg + O2 --> 2MgO2) React with acid.Mg + H2SO4 --> MgSO4 + H2Use:Magnesium burns in air with a dazzling white light when ignited. Therefore it is used in fireworks.Name: GoldPhysical properties-1) They are very lustrous.2) Very malleable.3) Very ductile.Chemical properties:It is non-reactive metal. Do not react with acid, base orair. Thus it is called noble metal.UseIt is used for making jewellery.Non-metals:Name: CarbonPhysical properties:1) Exists in solid state2) bad conductor of heat.Chemical properties:1) Reacts with oxygen:C + O2 --> CO22) Reacts with waterC + H2O --> CO + H2Uses:Diamond is used as a gemstone. Graphite is used as a lubricant.Name: SulphurPhysical properties:1) It exists as solid.2) Non sonorousChemical properties 1) It react with oxygenS + O2 --> SO22) Its oxides are acidic in nature. When sulphur dioxide reacts with water forms a sulphurous acid.SO2 + H2O --> H2SO3Uses:It is used in the manufacture of dyes, matches, fireworks and gunpowder.Name: ChlorinePhysical properties1) It exists as a gas under ordinary conditions.Chemical properties1) Displacement reaction:Cl2 + 2NaBr --> 2NaCl + Br22) It reacts with water in presence of sunlight or heat.2Cl2 + 2H2O --> 4HCl + O2Uses:It is used for the manufacture of many plastics, polyvinyl chloride. It is used to disinfect wateras it kills germs.Name: oxygenPhysical properties1) It exists as a gas.Chemical properties:Above reactions involving oxygen as reactants can be used to write chemical properties on an index card.UsesIt is most important non-metal as it is required for respiration. All combustion processes need oxygen.