Yuni sedang mempelajari atom dengan nomor atom 15 dan nomor massa 31. Ia ingin tahu berapa banyak neutron yang dimiliki atom tersebut adalah ....
Ulangan Harian 1

Quiz
•
Chemistry
•
10th Grade
•
Hard
Ira Nurdayanti
Used 3+ times
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
13
16
27
40
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Konfigurasi elektron yang paling tepat dari unsur 24X adalah ….
1s2 2s2 2p6 3s2 3p6 3d4
1s2 2s2 2p6 3s2 3p6 4s1 3d5
1s2 2s2 2p6 3s2 3p6 4s2 3d4
1s2 2s2 2p6 3s2 3p6 4s2 4p4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Berapa jumlah elektron yang terdapat pada ion Cl dengan no atom 17 dan muatan -1?
16
18
17
19
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dedi sedang belajar tentang struktur atom. Jika atom dengan nomor atom 6, berapa jumlah proton yang dimiliki atom tersebut?
8
7
6
9
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada senyawa MgO, perbandingan massa Mg : O = 3 : 2. Jika 15 gram magnesium direaksikan dengan 15 gram oksigen, maka massa MgO yang dihasilkan sebanyak...
30 gram
20 gram
25 gram
15 gram
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Unsur A dan B membentuk dua macam senyawa dengan komposisi seperti pada gambar tersebut.
Maka Perbandingan massa A di dalam senyawa I dan II pada massa B yang tetap adalah ....
1 : 1
2 : 3
2 : 1
3 : 2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Gas belerang dioksida direaksikan dengan gas oksigen dengan persamaan reaksi:
SO2 (g) + O2 (g) --> SO3 (g)
Bila volum diukur pada suhu dan tekanan yang sama, maka perbandingan volum gas SO2 : O2 : SO3 adalah ...
1 : 2 : 1
2 : 1 : 1
2 : 1 : 2
3 : 2 : 1
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