
KDPBIO
Authored by Resi Pratiwi
Chemistry
University
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sistem koloid yang medium pendispersinya cair dan fase terdisfersinya cair adalah……
mentega
awan
susu
kabut
keju
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di antara molekul-molekul dibawah ini, yang mempunyai ikatan kovalen rangkap dua adalah . . .
N2 (nomor atom N = 7)
NH3
H2 (nomor atom H = 1)
H2O
O2 (nomor atom O = 8)
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Contoh campuran homogen dalam kehidupan sehari-hari adalah ….
air laut
makanan
air sungai
larutan kopi
larutan gula
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Data energi ikatan :
C = C = 611 kJ/mol
C – H = 414 kJ/mol
H – Cl = 431 kJ/mol
C – Cl = 339 kJ/mol
C – C = 347 kJ/mol
Berdasarkan data energi ikatan, maka perubahan entalpi pada reaksi C2H4 + HCl → C2H5Cl adalah…kJ.
+46
-148
-138
-46
-58
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Kelompok senyawa yang semuanya berikatan ion adalah ….
NH3, CO2, dan H2O
CH4, NaCl, dan CaCl2
NaCl, HCl, dan H2O
KCl, NaI, dan MgBr2
H2, Cl2, dan NaI
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu senyawa dengan Mr = 55 mengandung 60% massa unsur X (Ar = 16) dan sisanya unsur Y (Ar = 23). Rumus molekul senyawa tersebut adalah....
XY3
XY2
X2Y2
X2Y
XY
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diketahui beberapa unsur dengan konfigurasi elektron sebagai berikut:
P: 2 8 7
Q: 2 8 8 1
R: 2 8 18 2
S: 2 8 8
T: 2 8 18 4
Unsur di atas, yang paling stabil (paling sukar membentuk ikatan kimia) adalah ….
T
P
R
S
Q
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