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College Matter Questions

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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 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 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 Matter
Metals, minerals, water and air are examples of:
  1. natural alloys
  2. inorganic substances
  3. compound gases
  4. proteins
College Quantum Physics and the Atom
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
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
College Thermodynamics
Which of the following correctly represents when the equilibrium point occurs?
  1. When the value of ∆Gº=1, only
  2. When the value of ∆Gº<0, only
  3. When the value of ∆Gº>0, only
  4. At the lowest value of free energy available to the system
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
College Thermodynamics
Which of the following represents ∆Gº, in terms of temperature?
  1. [math]∆Gº=∆Hº+T∆Sº[/math]
  2. [math]∆Gº=∆Hº-T∆Sº[/math]
  3. [math]∆Gº=∆Hº-T/{∆Sº}[/math]
  4. [math]∆Gº=-∆Hº-T∆Sº[/math]
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 Quantum Physics and the Atom
Which of the following equations represents energy that can be used in problems involving specific energy transitions?
  1. E=[math](-2.178 xx 10^-18 J)(Z^2/n^2)[/math]
  2. ∆E=[math]h/{mv}[/math]
  3. [math]∆E=nhv[/math]
  4. ∆E=hf
College Quantum Physics and the Atom
How is energy transferred?
  1. in packets of energy called protons
  2. in the form of subatomic particles
  3. in the form of photons and subatomic particles
  4. in the form of photons
College Matter
Which of the following equations correctly demonstrates Graham's Law of Diffusion and Effusion?
  1. [math]{"Rate of effusion of gas 1"}/{"Rate of effusion of gas 2"} = √{MW_1}/{MW_2}[/math]
  2. [math]{"Rate of effusion of gas 1"}/{"Rate of effusion of gas 2"} = √{MW_2}/{MW_1}[/math]
  3. [math]{"Rate of effusion of gas 1"}/{"Rate of effusion of gas 2"} = {MW_1}/{MW_2}[/math]
  4. [math]{"Rate of effusion of gas 1"}/{"Rate of effusion of gas 2"} = {MW_2}/{MW_1}[/math]
College Quantum Physics and the Atom
In going from gamma rays to microwaves, how do wavelength and energy change?
  1. Wavelength and energy both increase
  2. Wavelength and energy both decrease
  3. Wavelength decreases, while energy increases
  4. Wavelength increases, while energy decreases
College Thermodynamics
Which of the following correctly describes an increase in entropy?
  1. freezing
  2. crystallization of a solution
  3. dissolving
  4. condensation
College Thermodynamics
Which of the following correctly classifies entropy?
  1. It is an intensive property, in that it depends on the identity of the substance
  2. It is an extensive property, in that it depends on the number of moles
  3. It is neither extensive nor intensive
  4. It is an extensive property, in that it depends on the identity of the substance
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