1-Nazorat ishi

To’ldiruvchi savollar


------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------To’ldiruvchi so’rov bali ________

II variant

1. Qum, osh tuzi va yog’och qipig’dan ibrat aralashmani tarkibiy qisimlarga ajratish ketma- ketligini qisqacha izoh bilan yozing
2. Quyidagi formulalarni valentlik asosida to’g’irilab yozing
III IV III V III V III IV
FeO CH CaO PH ClO PO NaO CrO CO SO
3. Azotning valentligi 3 ekanligini bilgan holda, uning vodorod bilan hosil qilingan birikmasining formulasini yozing va formula quyidagilarni isbotlang:
A) nisbiy molecular massasini;
B) 0,75 mol modda massasini;
C) 0,25 mol moddadagi molekulalar sonini.
4. Quyidagi o’zgarishlarni fizik-kimyoviy o’zgarishlarga bo’lib alohida-alohida yozing.
Suvning bug’lanishi, ko’mirning yonishi, temirning zanglashi, suvning muzga aylanishi, shakarning erishi, suvning parchalanishi, qog’ozning yonishi, temirning erishi, ko’mirning maydalanishi,oltingugurtning yonishi.
5. Quyidagi reaksiya tenglamalarini tugallangan va koeffitsiyentlar tanlang:
V III
P +O₂ = N₂ +H₂=
Masalalarni yechilishi_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Nazorat ishining bali _________