Kimyo fanidan
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_______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ ___________________________________________ Mavzu:Metallmaslar.Uglerod guruhi. Nazorat shakli:masala yechish. I-variant 1. Quyidagi o’zgarishlarni amalga oshiruvchi reaksiya tenglamalarini yozing. CaCO 3 →CO 2 →Na 2 CO 3 →NaCO 3 →NaCl 2.Uglerodni jami elektronlarini necha %ini s elektronlari tashkil etadi? 3.Tarkibida 20% qo’shimcha modda bo’lgan 10gr ohaktosh to’liq parchalanganda (n.sh.da) necha l gaz ajraladi? Kompetentlikni aniqlash uchun materiallar: 4.Ohaktoshdagi elementlarni % nisbatlarini aniqlang.Eng ko’p uchraydigan kremniyning birikmasi qaysi? Unda kremniy necha % ni tashkil etadi? 5.siz uglerodni qanday birikmalari haqida ko’p eshitgansiz 3ta birikmasi haqida tushunchalaringizni bayon eting.? II-variant. 1.25gr ohaktosh qizdirilganda 10gr kalsiy oksidi olindi.Ohaktosh tarkibida necha %CaCO 3 bo’lgan? 2. Quyidagi o’zgarishlarni amalga oshiruvchi reaksiya tenglamalarini yozing. CaCO 3 →CaO→Ca(OH) 2 →CaCl 2 → CaCO 3 3.11,2l(n.sh)da is gazi yonganda qancha miqdor issiqlik ajralib chiqadi? Kompetentlikni aniqlash uchun materiallar: 4.Ohaktosh haqida nimalarni bilasiz? 5. Dalomitdagi elementlarni massa nisbatini aniqlang. 5 _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ ______________________ Yüklə 0,53 Mb. Dostları ilə paylaş:
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