
INTI ATOM & R A
Quiz
•
Physics
•
1st - 5th Grade
•
Hard
amilia aminingsih
Used 12+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu zat radioaktif mempunyai waktu paruh 20 tahun. 25 gram zat itu disimpan selama 60 tahun. Berapakah gram sisanya ….
4,251 gram
2,165 gram
1,135 gram
3,211 gram
3,125 gram
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu zat radioaktif mula-mula menunjukkan keaktifan 2400 dps. Setelah 10 tahun keaktifannya menjadi 300 dps. Berapa waktu paruh zat radioaktif itu?
5 tahun
2,5 tahun
7,45 tahun
3,33 tahun
50 tahun
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Isotop 146C adalah zat radioaktif yang menyinarkan sinar beta. Setelah zat ini melepaskan sinar beta akan dihasilkan ….
a. isotop 126C
b. isotop 147N
c. isotop 168O
d. isotop 136C
e. isotop 146C
isotop 126C
isotop 147N
isotop 168O
isotop 136C
isotop 146C
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Jika suatu unsur radioaktif mempunyai waktu paruh T detik, maka bagian unsur tersebut yang tinggal sesudah 4 T detik adalah ,,,
1/2
1/4
1/8
1/16
1/64
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Massa inti atom helium 4,0026 sma sedangkan massa proton 1,0078 sma dan neutron 1,0086 sma. Defek massa dari inti atom tersebut adalah ,,, sma
2,0474
1,9862
0,0987
0,0302
0,0138
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