
BAB 8
Flashcard
•
Science
•
9th Grade
•
Hard
EMMY Moe
FREE Resource
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8 questions
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1.
FLASHCARD QUESTION
Front
Siapakah ahli fizik Jerman yang telah menemui sinar - X?
Back
Wilhelm Conrad Roentgen
2.
FLASHCARD QUESTION
Front
Ahli fizik Perancis pertama yang menemukan keradioaktifan ialah ____
Back
Antoine Henri Bequerel
3.
FLASHCARD QUESTION
Front
Apakah sebatian radioaktif yang pertama dijumpai oleh Henri Becquerel?
Back
uranium
4.
FLASHCARD QUESTION
Front
Selain daripada radium, namakan satu elemen lain yang telah berjaya diekstrak oleh pasangan Curie daripada bijih uranium?
Back
polonium
5.
FLASHCARD QUESTION
Front
Apakah keradioaktifan?
Back
proses pereputan secara rawak dan spontan bagi nukleus yang tidak stabil dengan memancarkan sinaran radioaktif
6.
FLASHCARD QUESTION
Front
Apakah unit SI keradioaktifan?
Back
Becquerel
7.
FLASHCARD QUESTION
Front
Apakah separuh hayat pereputan radioaktif?
Back
tempoh masa yang diambil untuk bilangan nukleus yang belum mereput berkurang menjadi setengah daripada nilai asalnya
8.
FLASHCARD QUESTION
Front
sebuah bahan radioaktif mempunyai jisim asal 120g. Hitungkan jisim bahan tersebut selepas 20 jam jika separuh hayat bagi bahan tersebut ialah 5 jam.
Back
7.5g
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