
Level 5 Tipe A
Authored by Doyieci Doy96
Chemistry
10th Grade

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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu ion bermuatan positif 3. Jika nomor massa 27 dan memiliki jumlah elektron 10, maka atomnya akan dilambangkan dengan...
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unsur X memiliki 10 proton dan 12 neutron, sedangkan unsur Y memiliki nomor massa 24 dan nomor atom 12. Kedua unsur itu termasuk…
Isotop
Isobar
Isoton
Isomer
Answer explanation
Isoton diketahui sebagai unsur yang di dalam inti atomnya memiliki jumlah nomor massa dan dan nomor atom yang berbeda.
Unsur X memiliki 12 neutron.
Unsur Y memiliki 24 nomor massa dan 12 proton, maka :
Neutron unsur Y = nomor massa Y - jumlah proton Y
Neutron unsur Y = 24-12
Neuton unsur Y = 12
Maka unsur X dan Y merupakan isoton
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika unsur Ni memiliki nomor atom 28 dan nomor massa 59, ion Ni+2 memiliki jumlah proton, elektron, dan neutron berturut-turut adalah...
30,28,31
28,26,59
28,26,31
26,28,59
26,28,31
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
25,25,30
25,25,55
25,30,25
30,25,25
30,25,55
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Diantara pilihan berikut, yang dapat membentuk ion dengan muatan +2 adalah..
Nomor massa = 12
Nomor atom = 6
Nomor massa = 16
Nomor atom = 8
Nomor massa = 31
Nomor atom = 15
Nomor massa = 37
Nomor atom = 17
Nomor massa = 24
Nomor atom = 12
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Muatan ion yang dapat dibentuk dari unsur yang memiliki nomor atom 20 adalah...
+3
+1
+2
-2
-1
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Teori atom yang menyatakan bahwa reaksi kimia adalah pemisahan, penggabungan, atau penyusunan kembali atom-atom, sehingga atom tidak bisa dibuat atau dimusnahkan merupakan teori yang dikemukakan oleh ….
Dalton
Thomson
Niels Bohr
Rutherford
Max Planck
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