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Unit 2- Nuclear (Half life, Decay, Fusion/Fission0

Quiz by Kate Downey

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40 questions
Show answers
  • Q1
    What keeps the nucleus together?
    strong nuclear force
    gravity
    attraction of electrons
    atomic number
    30s
  • Q2
    What is the process by which materials give off energy rays called radiation called?
    irradiation
    nuclear power
    radioactivity
    half life
    30s
  • Q3
    If a sample of element X has a half-life of 8.0 days, how much would be left of a 40.0 g sample after 32 days?
    2.5 g
    5 g
    10 g
    30s
  • Q4
    A unknown material started with 35.6 grams and now there is only 8.9 grams left. What is the half-life of this substance if it has been 27.2 hours?
    54.4 hr
    13. 6 hours
    2 hours
    13.6
    30s
  • Q5
    If an unstable nuclei breaks apart spontaneously, this changes the identify of the _____________________.
    molecule
    atom
    reaction
    compound
    30s
  • Q6
    Which particle has the following symbol?
    Question Image
    beta
    gamma
    electron capture
    alpha
    30s
  • Q7
    Which particle has the following symbol?
    Question Image
    beta
    gamma
    neutron
    alpha
    30s
  • Q8
    Which type of radiation is a stream of high speed electrons?
    alpha
    gamma
    delta
    beta
    30s
  • Q9
    When writing a decay equation, the atomic numbers and mass numbers on both sides must
    be equal
    increase on the reactant side
    decrease on the product side
    increase on the product side
    30s
  • Q10
    Which type of decay is just energy?
    beta
    alpha
    gamma
    electron capture
    30s
  • Q11
    If Radium-226 goes through alpha decay, what element is formed? (need periodic table)
    Thorium-230
    Radon-222
    Actinium-222
    Radon-86
    30s
  • Q12
    Radioactive decay of Iodine-131 involves ___, resulting in the formation of Xenon-131. (need periodic table)
    electron capture
    beta decay
    alpha decay
    gamma decay
    30s
  • Q13
    How is the nucleus of an atom changed after gamma decay?
    the atomic mass and atomic number stay the same
    the atomic mass stays the same, atomic number gains 1
    the atomic mass reduces by 4, atomic number by 2
    the atomic mass gains 1, atomic number remains the same
    30s
  • Q14
    What is it called when an unstable nuclei loses energy until it is transformed into stable isotopes of a different element?
    half-life
    alpha decay
    beta emission
    radioactive decay
    30s
  • Q15
    The radioactive decay of Xenon-118 involves ___, resulting in Iodine-118 (need periodic table)
    gamma decay
    beta decay
    electron capture
    alpha decay
    30s

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