Chm Chapter 3

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Chm Chapter 3
2014-02-11 00:25:23
Chm 151

Chapter 3
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  1. The term light refers to?
    Visible light
  2. Gamma Rays, Xrays, Ultra violet, visible light, Infrared, Microwave and Radio waves make up parts of what?
    Electromagnetic Spectrum
  3. Gamma Rays, X-rays, Visible light...etc. are different from one another but they all transmit energy in the form of what?
  4. What is WAVELENGTH? and symbol?
    The distance between (successive peaks or successive troughs) identical points on successive waves

    Symbol- Lambda λ
  5. What is Frequency? symbol?
    # of waves that pass through a particular point within a second

    symbol - ⋎
  6. What is closely related to the Electron Configuration of an element?
    • Chemical behavior of a given element
    • Physical Properties of an element
    • The type of Ion formed by a given element
  7. The arrow direction in a orbital diagram shows what?
    The SPIN of the e-
  8. Each element has it's own atomic _____ consisting of fine lines of _________.
    line spectrum, individual wavelengths
  9. Why does each element have it's own unique Atomic Line spectrum?
    The lines in the spectrum correspond to differences between the specific energy states in the atom.
  10. Heisenberg UNCERTAINTY PRINCIPLE suggests?
    It is impossible to know both the momentum p (mass times velocity m*u)


    Position of x of a particle with certainty
  11. Describe how energy is absorbed by an atom.
    Energy of absorbed radiation must match the difference between the two energy states of the atom.
  12. Why are electrons restricted to certain, discrete energy states associated with specific wavelengths?
    e- have wavelike motion and are restricted to certain energy states associated with specific wavelengths
  13. James Maxwell's Theory states that electromagnetic wave contains what two components?
    • Electric field component
    • Magnetic field component
  14. Electron density does what?
    gives the probability that an electron will be found in a particular region of an atom.
  15. Atomic Orbital?
    can thought of as the wave function of an electron in an atom
  16. Quantum Mechanics- Electron density in an atom can be described by what?
    be described by a wave function
  17. Electrons exhibit behaviors of what two things?
    behaviors of particles and waves
  18. electron occupies 3 dimensional space near the nucleus, this space is described as what?
    wave function
  19. What is Principal Quantum #?

    designates the size of the orbital

    Symbol = n
  20. What is the Angular Momentum Number?

    • describes the shape of the atomic orbital
    • (s p d and f)

    Symbol = l

    • Orbital:  s    p    d    f
    • l        :   0    1    2    3

  21. Magnetic Quantum #?

    describes the orientation of the orbital in space

    Symbol = ml

    • 1 orientation=s
    • 3 orientations=p
    • 5 orientations= d
    • 7 orientations= f
  22. For many electron systems, the principle energy level is split into _______ of differing energies.
  23. Energy is the capacity to do what?
    to do work or transfer heat
  24. Name two forms of energy
    Kinetic and Potential energy
  25. Name a form of Kinetic Energy and define.
    Thermal energy, which is energy that is associated with random motion of atoms and molecules.
  26. What is kinetic energy?
    Energy that results form motion
  27. Name a type(s) potential energy. Define type(s).
    Chemical Energy- energy stored within structural units of chemical substances

    Electrostatic Energy- that results from the interaction of charged particles
  28. What is potential energy?
    Energy possessed by object by virtue of its postition
  29. SI unit for Energy?
    Joules (J)