Tehnički važni metali by martina kuster https://padlet.com/martinakuster5/m5k3oh9xl4kr en-us 2019-03-11 17:01:53 UTC 2023-02-27 03:59:44 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/File.png TEHNIČKI VAŽNI METALI martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340065896
  • lat. metallum - rudnik, ruda
  • metalni sjaj
  • METALI
  • dobra provodljivost topline i struje
  • u prirodi su vezani u obliku kemijskih spojeva, minerala, oksida, sulfida
  • najlakše se dobivaju Cu, Ag, Hg, a najteže Li, K, Na, Mg, Al
  • ukupna zastupljenost u Zemljinoj kori : 25%
  • najvažniji elementi u periodnom sustavu, pogotovo konstrukcijski tehnički metali (automobilske industrije, elektrotehnika)
  • svi su čvrste tvari osim Hg

    • ]]>     2019-03-11 17:04:09 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340065896     ALUMINIJ, Al martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340067007
  • srebrno - bijeli metal
  • protonski broj : 13 
  • skupina : 13.       perioda : 3.
  • 3. po zastupljenosti u Zemljinoj kori
  • premekan

    • ]]>     2019-03-11 17:05:55 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340067007     ŽELJEZO, Fe martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340067381
  • srebrno - sivi metal
  • protonski broj : 26
  • skupina : 8.       perioda : 4.
  • 4. po zastupljenosti u Zemljinoj kori
  • tvrd
  • najrasprostranjeniji
    • ]]>     2019-03-11 17:06:31 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340067381     BAKAR, Cu martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340067648
  • svjetlo crrvenkast metal
  • protonski broj :29
  • skupina : 11.           perioda : 4.
  • mekan
    • ]]>     2019-03-11 17:06:56 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340067648     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340074710
  •   legure:
    1. duraluminij          (oplate aviona)
    2. aluminij i mangan       (kuhinjska folija)
    3. aluminij i bor        (električni kablovi)

    ]]>     2019-03-11 17:19:33 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340074710     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340075334
  • najvažnije rude:
    1. boksit Al2O3
    2. hidrarglit Al(OH)
    3. bemit AlO(OH)

    ]]>     2019-03-11 17:20:40 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340075334     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340076542
  • otpornost na koroziju       (ne korozira s vodom)
  • stabilan u zraku

    • ]]>     2019-03-11 17:22:47 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340076542     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340079564 2019-03-11 17:28:06 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340079564 martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340081742
  • legure:
    1. srednje tvrd čelik    (trupovi brodova)
    2. nehrđajući čelik  (pribor za jelo, sudoper)
    3. volframov čelik (svrdla za alate)

    ]]>     2019-03-11 17:32:11 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340081742     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340084727
  • otporan na koroziju
  • dobar vodič struje i topline
    • ]]>     2019-03-11 17:37:27 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340084727     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340085944
  • legure:
    1. bronca (propeleri)
    2. žuta mjed (žuta mjed, kvake)
    3. manganova bronca (motorni ventili)

    ]]>     2019-03-11 17:39:36 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340085944     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340086264 2019-03-11 17:40:08 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340086264 martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340087269 2019-03-11 17:41:59 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340087269 martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340088099
  • najvažnije rude
    1. hematit Fe2O
    2. magnetit Fe2O4
    3. limonit FeO(OH)
    4. siderit FeCO3
    5. pirit FeS2
    ]]>     2019-03-11 17:43:39 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340088099     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340093558
  • najvažnije rude:
    1. halkopirit CuFeS2
    2. halkozin Cu2S
    3. kuprit Cu2O
    4. malahit CuCO3 * Cu(OH)2
    ]]>     2019-03-11 17:52:19 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340093558     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340112491
  • spojevi (proizvodnja):
    1. Aluminijev oksid                                    2Al(OH)3(s) → Al2O3(s) +  3H2O (g)
    2. Aluminijev hidroksid                                Al(OH)4- ↔ Al(OH)3(s) + OH-(aq)

    ]]>     2019-03-11 18:27:48 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340112491     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340120808
  • spojevi (proizvodnja):
    • ŽELJEZA
    1. C(s) + O2 → CO2(g)
    2. CO2(g) + C(s) → 2CO(g)
    3. Fe2O3(s) + 3CO(g) → 2Fe(l) + 3CO2(g)
    ČELIKA
    1. 6CaO(l) + P4O10(l) → 2Ca3(PO4)2(l)
    2. CaO(l) + SiO2(l) → CaSiO3(l)
    ]]>     2019-03-11 18:42:42 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340120808     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340127252
  • spojevi (proizvodnja):
    • BAKRA
    1. 2CuFeS2(s) + 4O2(g) → Cu2S(s) + 2FeO(s)
    2. Cu2S(l) + 2Cu2O(l) → 6Cu(l) + SO2(g)
    MODRA GALICA 
    1. + gašeno vapno nastaje bordoška juha                                   CuSO4(aq) + Ca(OH)2(aq) → Cu(OH)2(s) + CaSO4
    2. +živo vapno nastaje CuSO4 * 5H2O                                               2Cu(s) + 2H2O4(aq) + O2(g) → 2CuSO4(aq) + 2H2O(l)

    ]]>     2019-03-11 18:55:54 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340127252     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340136942
  • dolaskom u dodir s vodom nastaje HRĐA  Fe2O3 * xH2O
  • galvanizacija - nanošenje prevlake elektrolitičkim putem(pocinčavanje)
  • katodna zaštita - spajanje s cjevovodom u vlažnoj zemlji
    • ]]>     2019-03-11 19:18:58 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340136942     martinakuster5 https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340143591 2019-03-11 19:36:36 UTC https://padlet.com/martinakuster5/m5k3oh9xl4kr/wish/340143591