CAVA Chem 303 S1U2 Atomic Spectra
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| When an atom [...] energy, an electron can move from a lower energy state to a higher energy state. | When an atom absorbs energy, an electron can move from a lower energy state to a higher energy state.
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| When the electrons of an atom [...] the right amount of energy, they can move from a lower energy state to a higher one. | When the electrons of an atom absorb the right amount of energy, they can move from a lower energy state to a higher one.
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| when the electrons of an atom [...] energy, they may fall from a higher energy state to a lower one releasing energy; often in the form of light. | when the electrons of an atom lose energy, they may fall from a higher energy state to a lower one releasing energy; often in the form of light.
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| Often the energy given off when electrons fall from a high energy state to a low state is in the form of [...]. | Often the energy given off when electrons fall from a high energy state to a low state is in the form of light.
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| Often the energy given off when [...] fall from a high energy orbital to a low orbital is in the form of light. | Often the energy given off when electrons fall from a high energy orbital to a low orbital is in the form of light.
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| The amount of energy released when an electron falls to a lower energy level can be calculated with [...]'s equation. | The amount of energy released when an electron falls to a lower energy level can be calculated with Planck's equation.
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| Planck's equation is: [...] (Ernie hates Velveeta) | Planck's equation is: E = hv (Ernie hates Velveeta)
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| In Planck's equation ( E = hv ), E = [...]; v = frequency of light (this is actually the Greek letter nu); h = Planck's constant | In Planck's equation ( E = hv ), E = energy; v = frequency of light (this is actually the Greek letter nu); h = Planck's constant
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| An atomic [...] spectrum is a snapshot of how an atom releases energy. | An atomic emission spectrum is a snapshot of how an atom releases energy.
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| Each different type of atom has its own unique set of electrons. Therefore, each different type of atom will create a different pattern of light (atomic [... ...]) when those electrons fall back into place after being "kicked up." | Each different type of atom has its own unique set of electrons. Therefore, each different type of atom will create a different pattern of light (atomic emission spectrum) when those electrons fall back into place after being "kicked up."
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| No two atoms have exactly the same emission [...]. | No two atoms have exactly the same emission spectrum.
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| The atomic emission spectrum is like a [...] for identifying atoms. | The atomic emission spectrum is like a fingerprint for identifying atoms.
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| The uniqueness of each atom's emission [...] has many applications. | The uniqueness of each atom's emission spectrum has many applications.
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| Astronomers may analyze the light coming from a distant star, and pinpoint the [... ... ...] given off. They can then determine the composition of the star by reading those colored lines that make up the spectrum. | Astronomers may analyze the light coming from a distant star, and pinpoint the atomic emission spectra given off. They can then determine the composition of the star by reading those colored lines that make up the spectrum.
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| Scientists use atomic emission spectra to discover the elements in samples of [...] materials. | Scientists use atomic emission spectra to discover the elements in samples of unknown materials.
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| Conversely, scientists can see how a material [*not emits*] light. Chemists can then use this data to identify the material that they are looking at. | Conversely, scientists can see how a material absorbs light. Chemists can then use this data to identify the material that they are looking at.
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| Flame Test: Heat a metal over a flame. The electrons will give off light. The [...] is different for each metal. | Flame Test: Heat a metal over a flame. The electrons will give off light. The color is different for each metal.
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| Photoelectric effect: some materials, when subjected to light, actually generated [...]. | Photoelectric effect: some materials, when subjected to light, actually generated electricity.
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| [...] described the photoelectric effect by using an understanding of how atoms emit energy. | Einstein described the photoelectric effect by using an understanding of how atoms emit energy.
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| The phenomenon of light hitting substances and resulting in electricity is called the [...] effect. | The phenomenon of light hitting substances and resulting in electricity is called the photoelectric effect.
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| Einstein won his only Nobel Prize for the discovery of the [...] effect. | Einstein won his only Nobel Prize for the discovery of the photoelectric effect.
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| Einstein explained the photoelectric effect by saying that if you give enough energy to electrons, they will [... ... ... ...]; thus generating electricity. | Einstein explained the photoelectric effect by saying that if you give enough energy to electrons, they will leave the atom entirely; thus generating electricity.
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| Electricity is the flow of electric [...]. A common form of electricity is the flow of electrons through metal. | Electricity is the flow of electric charge. A common form of electricity is the flow of electrons through metal.
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| Electricity is the flow of electric charge. A common form of electricity is the flow of [...] through metal. | Electricity is the flow of electric charge. A common form of electricity is the flow of electrons through metal.
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| when the electrons of an atom lose energy, they may fall from a higher energy state to a lower one releasing energy; often in the form of [...]. | when the electrons of an atom lose energy, they may fall from a higher energy state to a lower one releasing energy; often in the form of light.
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| In Planck's equation ( E = hv ), E = energy; v = [...] (this is actually the Greek letter nu); h = Planck's constant | In Planck's equation ( E = hv ), E = energy; v = frequency of light (this is actually the Greek letter nu); h = Planck's constant
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| In Planck's equation ( E = hv ), E = energy; v = frequency of light (this is actually the Greek letter nu); h = [...] | In Planck's equation ( E = hv ), E = energy; v = frequency of light (this is actually the Greek letter nu); h = Planck's constant
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