Kimyo 9-sinf

11. Elementlarning qaysi qatori atom radiusi ortib borish tartibida keltirilgan?

a) N,As,Sb;

b) C,N,0,F;

c) Na,Be,AI,C;

d) Li,Be,B,He.

12. Suv, suyuq ammiak, suyuq vodorod ftorid qanday bog‘ga ega?

1. 
   Kovalent bog‘ga ega;
   
2. 
   Ion bog‘ga ega;
   
3. 
   Vodorod bog‘ga ega;
   
4. 
   Metall bog‘ga ega.
   

13. Bir xil atomlardan hosil bo‘lgan molekulalardagi atomlarning oksidlanish darajasi nechaga teng?

a) -1; b) 0; c) 1; d) 2.

14. Azot guruhchasi elementlarining qaysi xossasi bir-biriga o‘xshaydi?

1. 
   kimyoviy belgisi;
   
2. 
   atom radiusi;
   
3. 
   tashqi pog‘onadagi elektronlar soni;
   
4. 
   tartib raqami.
   

15. Quyidagi uchta zarracha: Ne⁰, Mg⁺² va F·bir xil:

1. 
   yadro zaryadiga;
   
2. 
   massa soniga;
   
3. 
   neytronlar soniga;
   
4. 
   elektronlar soniga ega.
   

Test raqami	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
Javob
Ball

Nazorat ishining bali – bahosi:

2- NAZORAT ISHI
Mavzu: Uglerod guruhi elementlari, uglerodning xossalari, karbonat kislota, kremniyning xossalari, silikat sanoati.

Nazorat shakli: Yozma ish.
Ivariant

1. Ohakli suv orqali uglerod (IV)-oksid mo‘l o‘tkazilganda, dastlab ohakli suv loyqalanadi, so‘ngra loyqalanish yo‘qolib, tiniq eritma hosil bo‘ladi. Bu o‘zgarishlar natijasida sodir bo‘lgan reaksiya tenglamalarni yozing.

2. Uglerodning kimyoviy xossalarini namoyon qiluvchi reaksiya tenglamalarini yozing.

3. 44,8 litr karbonat angidrid hosil qilish uchun (n.sh.) necha g kalsiykarbonatni parchalash lozim?

4. Massasi 39,6 g bo‘lgan magniy va 37,8 g bo‘lgan SiO₂ orasidagi reaksiya natijasida hosil bo‘lgan kremniyni eritish uchun massa ulushi 34% bo‘lgan KOH eritmasidan () qanday miqdori talab qilinadi?
II variant

1. Quyidagi qaysi moddalar bilan uglerod (IV)-oksidi reaksiyaga kirishadi, reaksiya tenglamalarini yozing. HNO₃NaOH, KCI, SO₃ Na₂O, H₂SO₄, Ca(OH)₂, K₂O.

2. Kremniyning kimyoviy xossalarini namoyon qiluvchi reaksiya tenglamalarini yozing.

3. 10 g kalsiy karbonati bor bo‘lgan suspenziyani gidrokorbonat holida eritish uchun qancha hajm uglerod (IV)-oksidi kerak bo‘ladi?

4. Tarkibi 20 % li bekorchi jinslar bo‘lgan 4,5 gramm toshko‘mir yondirilganda (n.sh.da) necha litr CO₂ gazi ajraladi?
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