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When it comes to Chemistry on the MCAT, a Higher energy level corresponds to what stability? |
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Higher Energy means less stable |
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The first Quant. # is what? What does it describe? |
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The Shell, the size and energy of the orbital |
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The first Quant. #'s values range from what? |
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The Second Quant. # is what? What does it describe? |
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The Subshell, energy and shape |
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The Third Quant. # is what? What does it describe? |
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the Orbital Number, 3-D orientation in space |
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The Fourth Quant. # is what? What does it describe? |
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Spin Number, relative magnetism |
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The Second Quant. #'s values range from what? |
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The Third Quant. #'s values range from what? |
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The fourth Quant. #'s values range from what? |
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What are the two shapes that subshells describe? What are the numbers they correspond to? |
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Spherical and Dumbbell. Spherical = 0 Dumbell = 1 |
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Aufbau Principle states what? |
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electrons will fill the lowest shell first. |
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Pauli Exclusion principle states what? |
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An orbital can hold 0,1,or 2 electrons only. If there are 2, they must be of opposite spin! |
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Electrons will first occupy all orbitals before doubling up. (Think of siblings on couches from class) |
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What are the two exceptions when doing electron configurations? |
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Transition metals that are 1 away from being half-filled, or 1 away from being filled. |
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In the electromagnetic spectrum, Radiowaves or Gamma waves have a larger Wavelength? |
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Radiowaves, they are slower...thus they have a longer period, or longer distance to travel about an axis. |
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In the electromagnetic spectrum, a larger wavelength corresponds to what type of a frequency (large or small)? |
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Larger wavelength means smaller frequency! |
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The greater the frequency the _____ the wavelength, and _______the energy. |
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Smaller the wavelength, and greater the energy. |
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What is the formula that relates frequency, speed of light, and wavelength? |
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c = λf (speed of light) = wavelength x frequency |
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the constant for the speed of light? |
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what is the acronym to most easily remember the visible spectrum's order? |
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ROYGBV Red,Orange,Yellow,Green,Blue,Violet |
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The values for the visible spectrum? |
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Red = 750nm ------> Violet = 400nm |
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Formula to relate energy to frequency? |
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E = hf Energy = Plank's Constant x Frequency |
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If a photon of light excites an electron to jump from n=2 to n=3 with an energy value of 100kJ, how much energy is released when it falls back to n=2? |
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Bright Bands against a dark background is a characteristic of what type of spectra? |
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Dark Bands against a white background is a characteristic of what type of spectra? |
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Exothermic reactions absorb or release energy? |
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Endothermic reactions have their reactants at an energy level greater or less than their products? |
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Reactants are less energy than their products. |
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An Alpha Particle is equivalent to what? |
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a helium nucleus (2 protons, 2 neutrons) |
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Negative Beta Decay is what? |
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Neutron turns into a proton and an antineutrino and electron are released. |
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Positive Beta Decay is what? |
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Proton turns into a Neutron releasing a neutrino and a positron. |
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Electron Capture is what? |
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Electron is absorbed and combines with a proton from the element to make a neutron. |
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The time it takes for a cmpd to degrade into 1/2 of itself. |
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What is Nuclear Binding Energy? |
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Energy that was released when individual nucleons (protons and neutrons) were bound together. |
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What weighs more, the individual nucleons of an element, or the actual nucleus? |
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Total mass of separate nucleons -- mass of the whole nucleus |
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formula for the energy of the mass defect? |
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