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College Matter Questions

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College Matter
What is matter?
  1. anything that chemists use
  2. a liquid with interesting properties
  3. used as rocket fuel
  4. anything that has a specific volume
  5. anything that has mass and takes up space
College Matter
College Quantum Physics and the Atom
Which combination of n, l, and [math]m_l[/math] values could represent the orbital shown?
Single-Electron Orbitals - P₋₁
  1. n=2, l=0, [math]m_l[/math]=0
  2. n=2, l=1, [math]m_l=-1[/math]
  3. n=2, l=1, [math]m_l=0[/math]
  4. n=2, l=1, [math]m_l=1[/math]
College Quantum Physics and the Atom
Which of the following d-orbitals has the structure shown? (Ignore the label shown in the diagram.)
Single-Electron Orbitals - D₀
  1. [math]d_{xz}[/math]
  2. [math]d_{x^2 - y^2}[/math]
  3. [math]d_{z^2}[/math]
  4. [math]d_{xy}[/math]
College Quantum Physics and the Atom
Which of the following combinations of n, l, and [math]m_l[/math] could lead to the orbital shown?
Single-Electron Orbitals - S
  1. [math]n=2, l=1, m_l=-1, 0, 1[/math]
  2. [math]n=3, l=0, m_l=0[/math]
  3. [math]n=4, l=2, m_l=-2[/math]
  4. None of the above
College Quantum Physics and the Atom
Which combination of n, l, and [math]m_l[/math] values could represent the orbital shown?
Single-Electron Orbitals - F₃
  1. n=3, l=2, and [math]m_l=-2[/math]
  2. n=3, l=0, and l=0
  3. n=4, l=3, and [math]m_l=3[/math]
  4. n=4, l=1, and [math]m_l=-1[/math]
College Quantum Physics and the Atom
Which of the following describes electron spin quantum number?
  1. An orbital holds two electrons, and they have identical spin
  2. An orbital holds three electrons, and they have identical spins
  3. An orbital holds two electrons, and they have opposite spins
  4. An orbital holds three electrons, and they have opposite spins
College Quantum Physics and the Atom
Which range of wavelength is involved in the visible spectrum?
  1. [math]10^-12 m[/math]
  2. [math]4 xx 10^-7 "m to 7" xx 10^-7 m [/math]
  3. [math]10^-2 m[/math]
  4. [math]10^4 m[/math]
College Quantum Physics and the Atom
Which of the following correctly describes the changes in frequency and energy, in moving from radio waves to gamma rays?
  1. Energy and frequency both decrease
  2. Energy and frequency both increase
  3. Energy increases, and frequency decreases
  4. Energy decreases, and frequency increases
College Thermodynamics
Which of the following correctly describes the Second Law of Thermodynamics?
  1. The universe is constantly decreasing in disorder
  2. The entropy in the universe is equal to zero
  3. The universe is constantly increasing in disorder
  4. None of the above
College Quantum Physics and the Atom
Which of the following correctly describes the Bohr Model?
  1. The electron exists in triangular regions called orbitals
  2. Electrons are distributed randomly throughout an atom
  3. Electrons are distributed in a dense region known as an orbital
  4. Electrons are distributed in a circular region known as orbits
College Thermodynamics
Which of the following can be used to calculate entropy changes in reactions?
  1. [math]∆Gº_{reaction}=∑n_{r}∆Gº_f{"reactants"}-∑n_{p}∆Gº_f{"products"}[/math]
  2. [math]∆Gº_{reaction}=∑n_{r}∆Gº_f{"reactants"}+∑n_{p}∆Gº_f{"products"}[/math]
  3. [math]∆Gº_{reaction}=∑n_{p}∆Gº_f{"products"}-∑n_{r}∆Gº_f{"reactants"}[/math]
  4. None of the above
College Quantum Physics and the Atom
Which of the following correctly represents the relationship between distance and first ionization energy?
  1. As distance increases, so too does the ionization energy
  2. As distance increases, the ionization energy decreases
  3. As distance decreases, the ionization energy remains the same
  4. As distance increases, the ionization energy remains the same
College Thermodynamics
College Quantum Physics and the Atom
To which of the following elements does the Bohr model apply to?
  1. helium, only
  2. hydrogen and helium
  3. hydrogen, only
  4. hydrogen, helium, and lithium
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