8-sinf kimyo nazorat ishi +++

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Yangilangan May 2026

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____________ viloyati ____________ tumanidagi ____-umumiy o‘rta ta’lim maktabi 8–“____” sinf o‘quvchisi __________________________________ ning kimyo fanidan nazorat ishi daftari [image: konsultatsionnie uslugi dlya ximicheskoy promishlennosti | accenture] 2020-2021-o‘quv yili uchun nazorat ishi – 1 sana: _______________________ mavzu: asosiy kimyoviy tushunchalarni takrorlash va atom tuzilishi, davriy qonun. nazorat shakli: test. 1.avogadro doimiysini ifodalovchi sonni ko‘rsating. a) 6,02 • 1023; b) 6,05 • 1023; c) 6,02 •1025; d) 6,02 • 1020. 2.ham metallarga, ham metallamaslarga xos bo‘lgan amfoter xossaga ega elementlar qatorini ko‘rsating. a) rux va aluminiy; b) natriy va temir; c) magniy va kaliy; d) mis va xrom. 3.12 gramm uglerodda nechta atom bo‘ladi? a) 6,09-1028; b) 6.02-1023; c) 6,05-1024; d) 6.05-1023 4.avogadro qonuni qaysi bandda to‘g‘ri ta’riflangan. a) bir xil sharoitda turli xildagi gazlarning bir xil hajmlardagi molekulalar soni bir xil bo’ladi. b) moddalar bir-biri bilan ularning ekvivalentlariga proportsional miqdorlarda ta’sirlashadilar. c) reaksiyaning issiqlik effekti boshlang'ich moddalar bilan hosil bo'lgan mahsulotning …

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ating. a) molekulasi tarkibida metallarga o‘z o'rnini bera oladigan vodorod atomlari va kislota qoldig'idan tarkib topgan murakkab moddalar. b) metall atomi bir yoki bir necha gidroksogruppalardan tashkil topgan murakkab moddalar. c) tarkibida vodorod atomi va gidroksogruppa tutgan moddalar. d) tarkibi kislotalar va asoslar qoldiqlaridan iborat moddalar. 11.kislotalar molekulasi tarkibidagi kislorod atomining bo’lishi yoki bo’lmasligiga ko‘ra necha guruhga bo'linadi? a) 2; b) 4; c) 3; d) 5. 12.faqat kislorodli kisiotalardan iborat qatorni ko'rsating. a) h2s, h2co3, hf; b) hno3, h2co3, h2sio3; c) hz, hcn, hzr; d) hci, h2cro4, h2s. 13.ikki negizli kislotalar qatorini ko'rsating. a) hci, hbr, hn03; b) h3po4, h3bo3, h3aso4 c) h2so4, h2co3; h2so3 d) h4p2o7, hno3, h3aso3. 14.tuzlarga berilgan to‘g‘ri ta’rifni ko'rsating. a)molekulasida metall atomi va kislota qoldig’idan tashkil topgan murakkab moddalar. b) tarkibi vodorod atomlari va kislota qoldig'idan tarkib topgan murakkab moddalar. c) tarkibi metall atomi va gidroksogruppadan tarkib topgan murakkab moddalar. 15. oddiy modda qaysi bandda …

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etalini davriy sistemada tutgan o‘rniga qarab unga ta’rif bering. 3.quyidagi o‘zgarishlarni amalga oshirish uchun zarur bolgan tajribalarni bajaring va reaksiya tenglamalarini yozing. fe → feso4 → fe(oh )2 → feo →fe. 4. natriy sulfat tuzining 7,1% li 200 g eritmasiga mol miqdor bariy xlorid eritmasi quyilganda hosil bolgan cho‘kmaning massasini toping. ____–variant ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ _______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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_________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ nazorat ishi balli:___________________ nazorat ishi – 3 sana: _______________________ mavzu: katta, kichik davr elementlarining tuzilishi, yadro reaksiyalari asosida masalalar yecha olishni tekshirish. nazorat shakli: masala yechish. i–variant 1.kimyoviy elementlarning yadro zaryadi ortib borgan sari davrlarda hossalari qay tartibda o'zgarishini yozing. guruhlardagi o‘zgarishni ham. 2. 300 ml 0,2 molar eritma tayyorlash uchun necha gram nano3 olish kerak? 3. tarkibida 2,4% vodorod, 39% oltingugurt, 58,6% kislorod tutgan birikmaning formulasini aniqlang. 4. 30% eritma bor. 300 g suvga 30%

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naci dan qancha qo‘shilsa eritma 10% li bo‘ladi? ii–variant 1. tabiiy argon 36ar, 38ar va 40ar izotoplarining aralashmasidan iborat bolib: 36ar - 0,3%, 38ar - 0,7%, 40ar - 99% ni tashkil etadi. tabiiy argonning o’rtacha atom massasini aniqlang. 2. h2s04 ni 2 h eritmasidan 100 ml tayyorlashni hisoblang. 3. quyidagi kislotalardagi kislota hosil qiluvchi elementning valentligini aniqlang: h2s, h2so3, h2so4, h2cro4, hmno4. 4. solishtirma og'irligi 1,075 g/ml bo‘lgan 8% eritmasidan 5 litr tayyorlash uchun na2s03 dan necha gramm kerak? ____–variant ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

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____________ viloyati ____________ tumanidagi ____-umumiy o‘rta ta’lim maktabi 8–“____” sinf o‘quvchisi __________________________________ ning kimyo fanidan nazorat ishi daftari [image: konsultatsionnie uslugi dlya ximicheskoy promishlennosti | accenture] 2020-2021-o‘quv yili uchun nazorat ishi – 1 sana: _______________________ mavzu: asosiy kimyoviy tushunchalarni takrorlash va atom tuzilishi, davriy qonun. nazorat shakli: test. 1.avogadro doimiysini ifodalovchi sonni ko‘rsating. a) 6,02 • 1023; b) 6,05 • 1023; c) 6,02 •1025; d) 6,02 • 1020. 2.ham metallarga, ham metallamaslarga xos bo‘lgan amfoter xossaga ega elementlar qatorini ko‘rsating. a) rux va aluminiy; b) natriy va temir; c) magniy va kaliy; d) mis va xrom. 3.12 gramm uglerodda nechta atom bo‘ladi? a) 6,09-1028; b) 6.02-1023; c)...

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