Question

Question (2): What is an alloy and explain why alloys are being produced and used instead of pure metals? (1.5 point) An allery is a metal seposed of two a more elements where at least ane dement in metallic Why produced and achieve enhanced properties that cannot be obtain an mells Eg sength hardwen , couronian enstehe Question (3): Compare between the thermosetting and thermoplastic materials (1 point) Thermoplastic reversible in plase by teat e d cooling Can we melles al solich sind repectedly thermantsi lireversibl : phax by beating ee Question (4): Discuss advantages and disadvantages of using polymers over metals (1.5 points) advantages : - town cust M med penting - Bella corrosinre

neglect the writing plz :D

Answer 1

SOLUTION-2 AN ALLOY IS A MIXTURE OF ME TALS OR A ME TAL WI7H ANOTFEK ELEMENT AN ALLOY CAN BE A MIXTURE OF TWO OR MOKE METALLIC THE OF THE MATERIAL AND PRESERVES THE DE SIRED PROPER TIES OR A SOLID SOLUTION OF METALS PHASES FOR MATION OF ALLOYS ACTUALLY REDUCES THE COST COM BINATION OF ME TALS OF THE METAL. EN HANCES AND PROVJDES OK MECHANICAL STRENGTH. THE THE PROPERTY OF THE CONSTITUENT ELEMENTS PROPER TIES LIKE CORROSION RESISTANCE SOLUTION:-3 THERMOPLASTIC THERMOSE TTING 13 sYN THESIZED ADDITION1) SYNTHESIZED BY CONDENSATION POLY MERI ZATION. BY POLYMERIZATION. 2 HAVE SE CONDARY BONDS BETWEEN MOLECULAR CHAINS. 2 HAVE PRI MARY BONDS BETWEEN MOLECULAR CHAINS AND HELD TOGETHER BY STRONG CROSS-LINKS 3) HAVE HIGH MELTING POINTS 3) HAVE L OW MELTING POINTS AND LOW TENSILE STREN GTH STREN GTH AND TENSTLE 491S WEIGHT IN MOLECULAR LOWER 4j IS HIGH IN MOLE CULAR WEIGHT SOLUTION -4 ADVANTAGES DISADVANTAGER MORE RESISTANT TO. CHEMICALS. CANNOT WITHSTAND VERY HIGH TEMPERATURE 2J STRENG TH TO SIZE RATIO OF POLYMERS TS LESS 3STRUC TURAL RIGIDITY IS VERY LESS. 4 SOME POLY MER CANNOT BE RECYCLED. DO NOT RECPUIRE POST-TREATMENT FINTSHING EFFORTS LIGHTER THAN METALS POLYMERS ANE NATURALLY RADAR ABSOR BENT THERMALLY AND ELECTRICALLY INSULATING. AS WELL AS