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Quiz
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Chemistry
•
1st Grade
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Practice Problem
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Medium

Sri Winanti
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27 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
1. Suatu unsur memiliki 17 proton, 18 neutron dan memiliki massa atom relatif 35. Harga keempat bilangan kuantum untuk electron terakhirnya adalah ....
A. n = 3;l = 0;m = -1;s = +½
B. n = 3;l = 0;m = +1; s = -½
C. n = 3;l = 1;m = +1;s = +½
D. n = 3;l = 2;m = 0;s = -½
E. n = 3;l = 1;m = 0;s = -½
n = 3;l = 0;m = -1;s = +½
n = 3;l = 0;m = +1; s = -½
n = 3;l = 1;m = +1;s = +½
n = 3;l = 2;m = 0;s = -½
n = 3;l = 1;m = 0;s = -½
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Suatu unsure memiliki data sebagai berikut: jumlah proton 35, jumlah neutro 35, dan massa atom relatifnya 80. Konfigurasi electron dan letak unsur tersebut dalam system periodic berturut-turut adalah ...
A
B
C
D
E
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perhatikan konfigurasi 2 buah unsur berikut!
P = [He] 2s2 2p3
Q = [Ne] 3s23p5
Bentuk molekul yang terjadi antara 2 unsur jika berikatan sesuai aturan oktet adalah ....
linear
segitiga datar
tetrahedral
segitiga bipiramida
oktahedral
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui rumus senyawa sebagai berikut MgSO4 dan KCl. Nama yang bernar untuk kedua rumus senyawa tersebut berturut-turut adalah ...
magnesium klorida dan kalsium klorida
magnesium sulfat dan kalsium klorida
magnesium sulfat dan kalium sulfat
mangan (II) sulfat dan kalium (I) klorida
mangan (I) sulfat dan kalium (I) klorida
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Sebanyak 6 gram logam magnesium dibakar dengan 4 gram oksigen dalam ruang tertutup menurut persamaan reaksi: 2 Mg (s) + O2 (g) → 2 MgO (s). Massa magnesium oksida yang dihasilkan sebanyak (Ar Mg = 24 ; O = 16)
A. 6 gram
B. 8 gram
C. 10 gram
D. 12 gram
E. 16 gram
6 gram
8 gram
10 gram
12 gram
16 gram
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Perhatikan persamaan reaksi asam-basa berikut :
(1) CH3NH2 + H2O OH- + CH3NH2+
(2) HS- + H20 H2S + OH-
(3) HCN- + H2O CN‑ + H3O+
(4) (CH3)2NH + H2S (CH3)2NH2+ + HS-
(5) NH3 + H2O NH4+ + OH-
Dari reaksi tersebut. Tentukan manakah reaksi yang dapat diterangkan sebagai asam menurut teori Arrhenius…
A. (1) dan (2)
B. (2) dan (3)
C. (4) dan (5)
D. (3) saja
E. (4) saja
(1) dan (2)
(2) dan (3)
(4) dan (5)
(3) saja
(4) saja
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Data berikut adalah hasil percobaan pengujian kertas lakmus untuk beberapa larutan garam.
Larutan garam yang reaksi hidrolisisnya setipe dengan senyawa garam dengan reaksi hidrolisis:
S-2+ H2O → HS- + OH- adalah ....
Larutan garam 1 dan 2
Larutan garam 1 dan 3
Larutan garam 2 dan 3
Larutan garam 2 dan 4
Larutan garam 4 saja
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