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- 1. Multiple ChoiceWhich type of radiation has the greatest penetrating power?AlphaBetaGammaMicrowaves
- 2. Multiple ChoiceThe nuclear process occurring at a nuclear power plant.Nuclear fusionNuclear fissionCombustionMultiplication
- 3. Multiple ChoiceThe technetium-99 isotope has a half-life of 6.0 hours. If 100.0 mg were injected into a patient how much remains after 18 hours?33.0 mg12.5 mg.33 mg15.8 mg
- 4. Multiple ChoiceWhy does an atom undergo beta decay?It has too many electrons.It has an atomic number greater than 83It has more neutrons than protonsIt has more protons than neutrons
- 5. Multiple ChoiceWhat happens to the atomic number during alpha decay?The atomic number decreases by 4The atomic number increases by 1The atomic number decreases by 2.The atomic number stays the same.
- 6. Multiple Choice
Arrange in order of increasing ability to penetrate matter.
Beta, gamma, alpha
Alpha, gamma, beta
Gamma, beta, alpha
Alpha, beta, gamma
- 7. Multiple ChoiceDuring fission, some of the nuclear mass is converted intoenergyheavier nucleicritical massprotons
- 8. Multiple ChoiceBalance the following equation:
146C --> 0-1e + ________145B146C147N42He - 9. Multiple Choice
In the symbol 167N what the 7 stand for?
Mass number
Atomic number
Atomic mass
Number of neutrons
- 10. Multiple ChoiceThe half life of Thorium-234 is 24 days. What fraction of the element remains after 96 days1/21/41/81/16
- 11. Multiple Choice
Complete the nuclear equation and determine the type of decay that is occurring in this reaction.alphabetagammanone - 12. Multiple ChoiceIf we start off with element 24X50 after an alpha decay we get another element Y that looks like22Y5022Y4620Y4826Y54
- 13. Multiple ChoiceAlpha particles have a _____ charge.+20+1-1
- 14. Multiple ChoiceTwo or more nuclei combine to form one larger nucleus in the process of nuclear _____.FusionFissionTracingDecay
- 15. Multiple ChoiceWhich produces more energy--nuclear fission or nuclear fusion?FusionFissionThey produce the same amountIt depends on the elements used
- 16. Multiple ChoiceBarium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?0.25g2.5g25g80g
- 17. Multiple ChoiceCarbon-12 has 98.2% abundance, carbon-13 has 1.7% abundance, and carbon-14 has 0.1% abundance. Which isotope contributes most to the average atomic mass?Carbon-12Carbon-13Carbon-14They all contribute equally
- 18. Multiple ChoiceWhat is the half-life of an isotope if after 20.0 days you have 4.0 grams remaining of a 64.0 grams sample?1.25 days5.0 days0.000305 days4.25 days
- 19. Multiple ChoiceWhat is the missing isotope that will balance the following nuclear equation?
94Be + 11H → _____ + 42He105B105Ne63Li63C - 20. Multiple Choice
The force that holds the protons and neutrons together in the nucleus of an atom is called __________.
Binding force
magnetic force
centripetal force
electrostatic force
- 21. Multiple Choice
The half-life of a radioactive isotope is 20.0 minutes. What is the total amount of a 1.00-gram sample of this isotope remaining after 1.00 hour?
0.500g
0.333g
0.250g
0.125g
- Answer choicesTagsAnswer choicesTags