Hoshimov husanboy rasulov muslimbek

11-§. KIMYOVIY FORMULA VA UNDAN KELIB CHIQADIGAN
XULOSALAR. VALENTLIK. INDEKSLAR HAQIDA TUSHUNCHA

1. …–moddatarkibining kimyoviy belgilar va zarurat bo‘lsa indeks-laryordamida ifodalanishi.

A) murakkab modda B) kimyoviy birikma
C) kimyoviy modda D) kimyoviy formula


2. Kimyoviy formula moddaning nimalarini bildiradi?
1) sifat tarkibi; 2) miqdor tarkibi;
3) bitta molekulasini.
A) 2 B) 1,3 C) 1,2 D) 1,2,3


4. Elementning muhim miqdoriy tavsifi nima?
A) valentlikB) koeffitsent C) indeks D) formula
5. Valentlik so‘zining ma’nosi?
A) teng kuchli B) ko‘p miqdor
C) kuchi bor D) yetarli

12-§. MOLEKULALARNING O‘LCHAMI, NISBIY VA ABSOLUT MASSASI. MOL VA MOLAR MASSA. AVOGADRO DOIMIYSI

1. Molekulalarning diametri qanchaga teng?

A) 30 nm B) 1-10 A^◦ C) 100 nm D)30A^◦

2. Molekulalarning diametri qanchaga teng?

A) 300 nm B) 1-10 A^◦ C) 100 nm D)300 A^◦


3. Deyarli ko‘pchilik molekulalar diametrlari qanchaga teng?
A) 30 nm B) 1-10 A^◦ C) 100 nm D)30A^◦

4. Suvning bitta molekulasi massasi nechaga teng?

A) 28,948•10^-24kg B) 26,62•10^-24kg
C) 28,948•10^-27kg D)26,62•10^-27kg

5. … – modda molekulasi massasining uglerod-12 atomi massasining 1/12 qismiga nisbatan necha marta kattaligini ko‘rsatuvchi qiymatdir.

A) moddaning molekular massasi
B) elementning nisbiy molekular massasi
C) moddaning nisbiy molekular massasi
D) atomning molekular massasi
6. … –0,012 kg ugleroddagi atomlar soniga teng zarralar (atom, molekula va boshqa zarralar) tutuvchi modda miqdori.
A) mol^-1 B) litr C) gramm D)1 mol

7. Avogadro sonining birligi nima?

A) mol^-1 B) litr C) gramm D)1 mol


8. … –modda massasining (m) uning miqdoriga (n) nisbatiga aytiladi?
A) moddaning molar massasi
B) elementning nisbiy molekular massasi
C) moddaning nisbiy molekular massasi
D) atomning molekular massasi

9. Modda molar massaning son qiymati nimaga teng?

A) moddaning molekular massasiga
B) elementning nisbiy molekular massasiga
C) moddaning nisbiy molekular massasiga
D) atomning molekular massasiga