Kimyo 8-sinf "Atom" So’zining manosi nima?

Kimyo 8-sinf

1.“Atom” So’zining manosi nima?

A)yonmas B) bo’linmas C) bo’linuvchi D)kuchi bor

2. Vodorod elementining absolyut massasi?

A)1,67x10^-24 B)93,13x10^-24 C) 19,93x10^-24 D) 2,657x10^-23

3. H₂SO₄ ning nisbiy molekular massasi?

A) 78g B) 98g C) 100g D) 102g

4. Modda miqdori nima?

A) massa B) valentlik C) mol D) kimyoviy belgi

5. Cu₂(OH)₂CO₃ - malaxitning molyar massasi qaysi javobda ko’rsatilgan?

A) 111g B) 222g C) 107g D) 142g

6. Oksidlar keltirilgan javobni toping?

A) H₂O, CO₂ B) HCl, H₂O C) NaCl, CO₂ D) HNO₃

7. kislotalar keltirilgan qatorni toping?

A) HNO₃ H₂SO₄ B) ZnO AL₂O₃ C) NaOH CA(OH)₂ D) K₂SO₄ NANO₃

8.Ohaktoshning kimyoviy formulasi toping.

A) Ca(OH)₂ B)CaO C) CaCO₃ D)CaSO₄

9.Tarkibida 61,8 % - Mn, O-36% va H-2,2 % bo’lgan moddaning kimyoviy formulasini toping.

A) HMnO₄ B) H₂MnO₄ C) Mn(OH)₂ D) Mn(OH)₂

10. Quyida keltirilgan oksidlardan qaysi biri noto’g’ri yozilgan?

A)CO₂ B)MgO C)Na₂O D)Ca₂O

11) ,, Moddiy unsurlarning eng kichik birligi-atomlardir ‘’ degan fikir qaysi alomaga tegishli?

A) Beruniy B) Ibn Sino C) Gaber D) Ar-Roziy

12. XVIII asrning oxirlariga kelib fanga nechta element ma’lum edi ?

A) 30ta B)63ta C)108ta D) 118ta

13. Qaysi elementlar fizik xossalariga ko’ra metalga , kimyoviy xossalariga ko’ra esa metalmaslarga o’xshaydi

A) Ca va Mg B) Zn va Al C) H va F D) Na va K

14. Faqat ishqoriy metallar keltirilgan qatorni toping.

A) K, Ca, Na B) Mg , Ca , Cu C) Rb, Li, Cs D) Rb, Cs , Ca

15. Davriy sistemadagi VII guruhning asosiy guruhcha elementlari nima deb yuritiladi?

A) Piktogenlar B) Galagenlar C) Xalkogenlar D) Inert gazlar

16.,,Valentlik’’ tushunchasini qaysi olim kiritgan? ___________________________________________

17.Davr deb nimaga aytiladi? _______________________________________

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18.Izotop deb nimaga aytiladi? _________________________________

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19.Energetik pog’onalar nima va ularning soni nechta ? ________________________________________________________

20.D.Mendeleyev oldindan bashorat qilgan elementlarni tarixiy nomlari bilan birga yozing ? __________________________________

A)Na B)Kr C)Fe D)Cr

10. Labaratoriya shtativi necha qismga bo’linadi?

A)3 B)4 C)5 D)2

11) Alanganing eng issiq qismi?

A)o’rta qismi B)yuqori qismi C)pastki qismi D)butun yuzasi

12. Gaber kim?

A) Al-Farg’oniy B) Ar-Roziy C) Ibn Sino D) Jobir ibn Xayyom

13. Atomdagi musbat zarracha nima?

A) proton B) elektron C) neytron D)alfa

14. Na elementining neytronlar soni nechta?

A)23 B) 11 C) 12 D) 33

15. F elementining yadrosida nechta zarracha harakatlanadi?

A) 9 B) 19 C)10 D)28

16. Diffuziya hidisasi deb nimaga aytiladi? ___________________________________________

17. Molekula va atom tushunchalariga ta’rif bering _______________________________________

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18. “Kimyoviy belgi” tushunchasini kim va qachon kiritgan?_________________________________

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19.Analiz deb nimaga aytiladi? ________________________________________________________

20. Moddaning agregat holari necha xil va ular qaysilar? __________________________________