Energy Changes & Atomic Emission Spectra

7 Questions | Total Attempts: 3134

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Energy Changes & Atomic Emission Spectra

This quiz must be completed by October 29


Questions and Answers
  • 1. 
    The light emitted from a fireworks display is produced when electrons in an excited state
    • A. 

      Absorb energy as they move to lower energy states

    • B. 

      Release energy as they move to higher energy states

    • C. 

      Release energy as they move to lower energy states

    • D. 

      Absorb energy as they move to higher energy states

  • 2. 
    Which statement describes how an atom in the ground state becomes excited?
    • A. 

      The atom absorbs energy, and one or more electrons move to a higher electron shell.

    • B. 

      The atom absorbs energy, and one or more electrons move to a lower electron shell.

    • C. 

      The atom releases energy, and one or more electrons move to a lower electron shell.

    • D. 

      The atom releases energy, and one or more electrons move to a higher electron shell.

  • 3. 
    The isotopes C-12 and C-13 have the same  
    • A. 

      Mass number for their atoms

    • B. 

      Bright-line spectrum

    • C. 

      Number of neutrons in their atoms

    • D. 

      Decay mode

  • 4. 
    Based on the bright-line spectra below, identify the two gases present in the mixture. In writing your answer, capitalize the two letters and separate them with a space and a comma. (Ex: X, Y) 
  • 5. 
    An electron in a calcium atom gains enough energy to move from the first shell to the second shell. The calcium atom becomes
    • A. 

      A negative ion

    • B. 

      An atom in an excited state

    • C. 

      An atom in the ground state

    • D. 

      A positive ion

  • 6. 
    Which of the following describes how colors in a bright-line spectrum or in a fireworks display are produced?
    • A. 

      Ions in salts absorb a specific amount of energy and become excited

    • B. 

      Ions in salts absorb a specific amount of energy, moving to a lower energy state as a result

    • C. 

      Ions in salts release a specific amount of energy as the electrons move from a higher energy state (excited state) to a lower energy state

    • D. 

      Ions in salts release a specific amount of energy as the electrons move from a lower energy state to a higher energy state (excited state)

  • 7. 
    A specific amount of energy is emitted when electrons in an aluminum atom return to the ground state. This emitted energy can be used to do what?
    • A. 

      To determine the mass of the sample

    • B. 

      To determine the identity of the element

    • C. 

      To determine the number of moles of the element

    • D. 

      To determine the number of electrons, ONLY, and NOTHING ELSE

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