Andijon viloyati andijon tumani umumta`lim maktabining 7 – “ ” sinf

Kompitentlikni abiqlash uchun materiallar:
4. Ifloslangan osh tuzini tozalash usullarini yozing.
5. Uy ro’zgorda ishlatiladigan asal, sut, o’simlik moyi qanday moddalarga misol bo’ladi?
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3- Nazorat ishi.
Mavzu: Fizik va kimyoviy o’zgarishlar,kimyoviy reaksiya tenglamalari, koeffitsiyent. Massaning saqlanish va tarkibning doimilik qonunlari,molyar hajm va kimyoviy reaksiya turlari haqidagi mavzularning umumlashtirish.
Nazorat shakli: masalalar yechish.
1-masala: 87,75g osh tuzini hosil qilish uchun qancha massa natriy metali kerak.
2-masala: tarkibida 63,22 % Mn va 36,78 % O bo’lgan moddaning formulasini aniqlang.3-masala: 10g H2 ning normal sharoyitdagi hajmini va undagi molekulalar sonini toping. 4-masala: 41g natriy fosfatning modda miqdorini hisoblang.
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5-masala: Quyidagi reaksiyalarni tugallang va koeffitsiyentlarni qo’ying.
Al + Cl2 →
Ag+Br→


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