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Kimia F4 ALOI

Aloi

QuestionAnswer
Terangkan perbezaan aloi & logam tulen dari segi permukaan,sifat kekerasan&sifat tahan kakisan ALOI>Berkilat,Tahan kakisan,Keras Logam Tulen>Pudar,Mudah kakis,kurang keras
Nyatakan komposisi Duralumin dan kegunaannya Tulen>Aluminium(93%)-Asing>Cu&Mg(3%)-Mn(1%) Kegunaanya: Bdn Kpal Terbang,basikal lumba~Ketumpatan rendah~X berkarat
Nyatakan komposisi Gangsa, sifatnya& kegunaannya Tulen>Kuprum(90%)-Stanum(10%) Kegunaannya:Pingat,Tugu,Piala~X berkarat~Kuat>Kuprum tulen
Nyatakan komposisi Loyang, sifatnya&kegunaanya Tulen>Kuprum(70%)-Asing>Zink(30%) Kegunaannya:Alatan muzik,Tombol pintu,Kunci~Brkilat~X brkarat
Nyatakan komposisi Keluli, sifatnya&kegunaannya Tulen>Besi(98%)-Asing>Karbon(0.2-2%) Kegunaannya:Landasan kreta api,bdn kereta-Lebih kuat&keras-Blh ditempa-
Nyatakan komposisi Keluli nirkarat, sifatnya&kegunaannya Tulen>Besi-(73%)-Asing>Cr(18%)-Ni(8%)-Karbon(1%) Kegunaannya:Sudu&Garpu,Singki~Tahan kakisan
Nyatakan komposisi Piuter,sifatnya&kegunaannya Tulen>Sn(95%)-Asing>Antimoni(3.5%)-Cu(1.5%) Kegunaannya:Piala,Cenderamata-X berkarat&berkilat
Berikan maksud Aloi Campuran dua atau lebih unsur di mana unsur yang utama adalah logam
Created by: Enbos
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