4-nazorat ishi Element bu

4-nazorat ishi
1. Element bu . . .
A) moddaning oddiy zarrachasi
B) moddaning bo’linmas darajasi
C) moddaning mayda zarrachasi
D) yadro zaryadlari bir xil bo’lgan atomlarning muayyan turi
2. Alyuminiy xloridda qancha element bo’lsa qaysi birikmada shuncha element bor?
A) H₂SO₄ B) H₂S C) O₃ D) Cl₂
3. HJO₄ kislotasida yodning valentligi qanday?
A) 0 B) 1 C) 3 D) 7
4. Oddiy moddalar qatorini ko’rsating.
A) Al₂O₃, HCl, KCl, NH₄OH B) HCl, HF, HNO₃, H_2­CO₃ C) P₄, S₈, O₂, O₃ D) PH₃, H₂O, H₂S, NaH
5. Kimyoviy toza bo’lgan moddani aniqlang.
A) benzin B) generator gazi C) havo D) olmos
6. Quyidagi hodisalarning qaysi guruhi kimyoviy jarayonga taalluqli?
A) suvning qaynashi, simob oksidining parchalanishi
B) suvning muzlashi, qurg’oshinning suyuqlanishi
C) temirning xlorlanishi, kalsiy karbanatning parchalanishi
D) kislotadan vodorodning siqib chiqarilishi, yodning sublimatlanishi
7. Quyidagi moddalarning kimyoviy bog’ turlarini aniqlang. 1)HCl, 2)H₂O, 3)C, 4)N₂, 5)Fe, 6)NaCl
a) qutbli kovalent bog’ b) qutbsiz kovalent bog’ c) ion bog’, d) metall bog’
A) a-1,4,6; b-2; c-3; d-5 B) a-1,2; b-3,4; c-6; d-5 C) a-2; b-3,4; c-1,5 d-6
8. Quyidagi moddadagi As mishyakning oksidlanish darajasini aniqlang. H₃AsO₃
A) +3 B) -3 C) +6 D) +5
9. Davriy jadvaldagi VI gurux qanday nomlanadi?
A) Ishqoriy B) inert gaz C) xalqagenlar D) galogenlar
10.Tarkibida 40% Ca, 12% C va 48% O bo’lgan moddaning formulasini aniqlang
A.CaO B. CO₂ C. CaCO₃ D. Ca(OH)₂
11. Al⁺³ionining elektron formulasi quyidagi qaysi formulaga muvofiq keladi?
A. 1s²2s²2p⁴ B.1s² 2s²2p⁶ C. 1s²2s² p D. 1s²2s²
12. 1s²2s² 2p⁶ 3s² 3p⁵ elektron formula qaysi galogenga to’g’ri keladi?
A.F B. Br C.Cl D. J
13. Fosforning yuqori oksidlanish darajasi nechiga teng ?
14. Elektromanfiylik nima?
15. electron olgan va electron bergan elementlarning zaryadlari qanday o’zgaradi?