
UTS Kimia Teknik 2024
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Chemistry
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40 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Hukum kekekalan massa yang menjadi landasan teori atom pertama kali diperkenalkan oleh:
Antoine Lavoisier
Joseph Proust
John Dalton
Democritus
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Apakah konsep penting dalam teori atom Dalton yang menyatakan bahwa atom dari unsur yang berbeda memiliki:
Ukuran dan massa yang sama
Massa dan sifat yang berbeda
Jumlah elektron yang sama
Neutron yang sama
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Eksperimen sinar alfa yang dilakukan oleh Rutherford menunjukkan bahwa:
Atom padat dan tidak memiliki ruang kosong
Elektron mengorbit inti dalam lintasan yang tetap
Atom memiliki inti kecil bermuatan positif
Elektron tersebar merata di seluruh atom
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Pasangan atom berikut yang tergolong bukan isotop, isobar, maupun isoton adalah:
24A12 dan 120B73
66F30 dan 70E34
25H12 dan 24A12
65D30 dan 65K31
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebuah atom X dengan nomor atom 31. Unsur ini termasuk dalam golongan dan periode:
Golongan 3A, Periode 4
Golongan 2A, Periode 3
Golongan 3A, Periode 3
Golongan 4A, Periode 4
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Tentukan 4 bilangan kuantum (n, l, m, s) untuk elektron terakhir unsur dengan nomor atom 35:
n=4, l=1, m=−1, s=+1/2
n=4, l=1, m=0, s=-1/2
n=4, l=1, m=+1, s=-1/2
n=4, l=1, m=0, s=+1/2
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Diberikan unsur-unsur berikut: Litium (Li, nomor atom 3), Fluor (F, nomor atom 9), Natrium (Na, nomor atom 11), Oksigen (O, nomor atom 8). Unsur manakah yang memiliki afinitas elektron terbesar?
Litium (Li)
Fluor (F)
Natrium (Na)
Oksigen (O)
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