
Chemistry is easy
Authored by Dorothy Siringoringo
Chemistry
2nd Grade
NGSS covered
Used 12+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Boru apakah Bu Dorothy
Siregar
Siringoringo
Simamora
Situmorang
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Cara pemisahan fraksi fraksi minyak bumi dilakukan dengan cara
Destilasi bertingkat
Cracking
Treating
Penyaringan
3.
MULTIPLE CHOICE QUESTION
45 sec • 5 pts
Cara mengetahui kualitas bensin adalah
Bilangan oktan
Bilangan heptana
Bilangan dekana
Bilangan butan
4.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
1. ∆H reaksi C2H2 →2C +H2 berdasarkan persamaan termokimia berikut:
C +O2 →CO2 ∆H= -A kJ/mol
H2 + 1/2O2 →H2O ∆H=-B kJ/mol
C2H2 +5/2O2 →2CO2 +H2O ∆H = -CkJ/mol
Adalah....
2B+C-A
A-2B-C
A+2B+C
2A+B-C
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-1
NGSS.HS-PS1-2
5.
MULTIPLE CHOICE QUESTION
3 mins • 5 pts
2C+2O2 → 2CO2 ∆H=-790kJ
CO +1/2O2 →CO2 ∆H = -98,5kJ
Maka entalpi reaksi: C+1/2O2 →CO
-1970 kJ
-296,5 kJ
-593 kJ
593 kJ
Tags
NGSS.HS-PS1-4
6.
MULTIPLE CHOICE QUESTION
2 mins • 5 pts
Diketahui reaksi: 2HCl --> H2 + Cl2 entalpi = +184 kJ, maka perubahan entalpi pada pembentukan 1 mol HCl adalah
92
82
-92
-82
Tags
NGSS.HS-PS1-4
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Persamaan reaksi termokimia berikut yang merupakan reaksi penguraian standar adalah
H2 + ½ O2→ H2O ∆H = -242 kJ
CO2 → CO + ½O2 ∆H = +283 kJ
LiOH → Li+ + OH- ∆H = -20 kJ
NH3 → 1/2N2+ 3/2 H2 ∆H = +92 kJ
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-4
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