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Question 1 of 10
1. Question
1 point(s)An unstable nuclide, X decays to become a nuclide Y, by emitting an alpha particle. Which of the following is true about the change of its proton and nucleon number?
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Question 2 of 10
2. Question
1 point(s)The equation above shows the beta decay of atom X. The increase of proton number after the decay is due to
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Question 3 of 10
3. Question
1 point(s)The equation above shows a radioactive decay. This equation represents the emission of _______________.
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Question 4 of 10
4. Question
1 point(s)The equation in the diagram represents the radioactive decay of radium. What X and Y are?
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Question 5 of 10
5. Question
1 point(s)The nucleus of uranium238 undergoes a series of radioactive decay and becomes a new nuclide Z. The process is represented by the equation shown in the diagram. What is the number of alpha and beta particles emitted in the process?
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Question 6 of 10
6. Question
1 point(s)The halflife of Iodine131 is 8 days. This means that
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Question 7 of 10
7. Question
1 point(s)A radioactive substance has halflife of 6 hours. How long will it take for its mass to become 1/16 of its original mass?
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Question 8 of 10
8. Question
1 point(s)The equation shows the disintegration of radioactive element X to become element Y (which is not radioactive). If the initial mass of X is 40g, determine the mass of X and Y after 1 hour. [Halflife of X is 15 minutes]
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Question 9 of 10
9. Question
1 point(s)A spark counter can be used to detect
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Question 10 of 10
10. Question
1 point(s)The diagram above shows the cloud tracks observed in a cloud chamber. Match the cloud tracks with their corresponding radioactive radiations.
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