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Kimyo

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  • Fizik hodisalarda nima sodir buladi
    Moddani shakli o'zgaradi
  • Kislorod qanday modda
    Gaz
  • Kimyoviy reaksiyaga nima sodir buladi
    Yangi modda
  • Havoda eng koʻp tarqalgan element
    N
  • Vodorodni formulasini yozing
    H2
  • Kislorodni formulasini yoozing
    O2
  • Xlorni formulasini yozing
    Cl2
  • Osh tuzini formulasi
    NaCl
  • Azobi formulasi
    O3
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