Chapter 9 Assignment And Quiz

25 July 2022
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question
Light travels through space at a speed of 3.00 Ă— 108 m/s.
answer
True
question
The shorter the wavelength of light, the more energy it has.
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True
question
How many valence electrons are in a chlorine atom?
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7
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Which of the following statements about the quantum-mechanical model is FALSE? A. All of the above are correct statements. B. Electron paths cannot be described exactly. C. Orbitals are specific paths electrons follow. D. Electrons do not behave as particles. E. Orbitals are a probability map of finding electrons.
answer
C
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Which form of electromagnetic radiation has the lowest frequency?
answer
Radio Waves
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Which of the following atoms has the greatest metallic character? A. Cu B. Cs C. Au D. Be E. Ti
answer
B
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Light is a type of matter.
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False
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Which color of the visible spectrum has the longest wavelength (750nm)?
answer
Red
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Which statement below does NOT follow the Bohr Model? A. When an atom emits light, electrons fall from a higher orbit into a lower orbit. B. Electrons exist in specific, quantized orbits. C. None of the above D. When energy is absorbed by atoms, the electrons are promoted to higher-energy orbits. E. The energy emitted from a relaxing electron can have any wavelength.
answer
E
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Which color of the visible spectrum has photons with the most energy?
answer
Violet
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Which of the following atoms has the least metallic character? A. K B. Rb C. Cs D. Na E. Li
answer
E
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Which form of electromagnetic radiation has photons with the highest energy?
answer
Gamma Rays
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Which of the following atoms is the smallest? A. Li B. B C. Ne D. O E. Be
answer
C
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Consider the electron configuration of the ion to determine which ion shown below has an incorrect ionic charge?
answer
Al3-
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What is the correct order of the electromagnetic spectrum from shortest wavelength to longest?
answer
Gamma Rays→X-rays→Ultraviolet Radiation→Visible Light→Infrared Radiation→Microwaves→Radio Waves
question
The distance between adjacent wave crests is called...
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Wavelength
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The elements will lose or gain electrons as needed to have an electron configuration that matches a noble gas.
answer
True
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Which of the following elements has the highest ionization energy? A. Ba B. Ca C. Cl D. Al E. Ne
answer
E
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The size of an atom generally increases...
answer
Down a group and from right to left across a period
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The number of cycles of a wave that passes a stationary point in one second is called its...
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Frequency
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Blue light travels faster then red light.
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False
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A red shirt appears red to our eyes because the shirt absorbs the red wavelengths of visible light.
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False
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The most energetic photons are gamma rays.
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True
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Wavelength of visible light determines color.
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True
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A photon represents the mass of a single particle of light.
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False
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Chlorine and bromine have very similar chemical properties. This is best explained by the fact that both elements ...
answer
Have the same number of valence electrons.
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Electromagnetic Radiation
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A type of energy that travels through space at a constant speed.
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Components of Light
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ROYGBIV
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Photon
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A particle of light
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The Bohr Model
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A model resembling planets revolving around the sun in orbits, useful in visualizing the structure of atoms.
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Orbitals
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Are a different form of orbits in that they represent probability maps.
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The Quantum Mechanical Model
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Not exact, Probability maps
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Principal Quantum Number
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n
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Atomic Size
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increases from top to bottom within a group and decreases from left to right across a period.