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Authored by Ishak Mandala
Chemistry
University
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8 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Teori atom yang dapat menerangkan hukum kekekalan massa namun tidak dapat menerangkan tentang sifat listrik atom adalah teori yang dikemukakan oleh?
N Bohr
J J Thompson
Dalton
Rutherford
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dalam sebuah atom memiliki partikel dasar penyusun atom yang terdiri atas proton, neutron, dan elektron. Muatan listrik partikel dasar tersebut berturut-turut adalah
0, -1, +1
+1, -1, 0
+1, 0, -1
-1, 0, +1
+1, -1, 0
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dalam teori atom, atom terdiri dari inti yang bermuatan positif dan dikelilingi oleh elektron yang bermuatan negatif di dalam suatu lintasan, siapakah penemu teori atom tersebut?
Dalton
Chadwick
N Bohr
J J Thompson
Rutherford
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Kalium mempunyai nomor atom 19 dan nomor massa 39. Jumlah elektron pada ion
Kalium adalah
19
20
40
39
21
Answer explanation
Jumlah elektron atom dalam keadaan netral sama dengan jumlah proton (nomor atom) dalam hal ini sama dengan 19
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebuah atom X mempunyai 10 elektron dan 12 neutron. Nomor massa unsur X itu adalah
10
12
22
2
20
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Unsur X mempunyai 10 proton dan 12 neutron, sedangkan unsur Y mempunyai nomor massa 23 dan nomor atom 11. Kedua atom tersebut merupakan
Isotop
Isomer
Isobar
Isoklor
Isoton
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jika unsur Ni memiliki nomor atom 27 dan nomor massa 59, ion Ni2+ memiliki jumlah proton, elektron dan neutron berturut – turut adalah
27, 25, 32
27,59,32
59, 27, 32
25, 59, 32
25, 25, 32
Answer explanation
Ion adalah atom yang bermuatan karena kekurangan elekton (ion positif) atau kelebihan elektron (ion negatif).
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