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32 Cards in this Set
- Front
- Back
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Rutherford Model |
Dense , +charged nucleus with electrons circling it like the planets around the sun |
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Bohr Model |
Proposed that electrons could only be found in specific circular paths (orbitals)around the nucleus |
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Energy levels |
Each orbital with fixed energy |
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Quantum |
The amount of energy required to move from an electron from one energy level to another |
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It takes less energy to move to the next level |
What happens when a - charged lecturing moves to a higher energy level (away from nucleus) |
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Erwin Schrodinger |
Who invented the Quantum Mechanical Model |
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Quantum mechanical model |
The allowed energies an electron can have, and the probability that the can be found at various locations around the nucleus
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Atomic orbital |
A region of space in which there is a higher probability of finding an electron |
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Principal Quantum Number Have a value of 1,2,3,4,5,6,7 |
What is a Energy Level labeled with? What are they? |
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Sub levels |
What is within the energy levels |
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Correspond to an orbital with a different shape describing where the electron can be found |
What does the sub level have/do |
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2n^2 (n=principle quantum #) |
What is the maximum number of electrons that can occupy a principal energy level |
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The aufbau principle |
The rule that states that electrons occupy the orbitals of the lowest energy first |
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Pauli Exclusion Principle |
The rule that states that no more than 2 electrons can occupy the same orbital, and they must have opposite spins |
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Hands Rule |
The rule that states that all orbitals are filled with electrons of the same spin before electrons of the opposite spin are added |
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Light |
What acts in waves and particles |
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Amplitude |
The height from zero to the crest |
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Wavelength |
The distance from the crest to crest other crest |
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Frequency |
The number of waves past a given point in a unit of time ( measured in Hertz) |
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Wavelength and frequency |
What is inversely proportional ( 2 things) |
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Wavelength x frequency =speed of light |
Speed of light formula |
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Electromagnetic Radiation |
Light in waves |
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Atomic spectra |
When atoms absorb energy, electrons move to higher energy levels and then give off light when moving back to a lower energy level |
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Atomic emission spectrum |
The discrete lines given off as the electrons move back to their ground state |
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Ground state |
The lowest possible energy level of an electron |
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Quanta |
Pockets of energy |
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Photons |
Light pockets of energy |
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Classical mechanics |
__________ mechanics describes objects LARGER than an atom at the speeds slower than the speed of light |
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Quantum mechanics |
_______mechanics describes objects SMALLER than an atom near the speed of light with wavelike motions |
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The Heisenberg Urcertainty |
What principle states that it is impossible to know both the velocity and the position of a particle (such as an electron) at the same time |
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The velocity is changed |
What happens when you determine the position of a particle |
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The position is always changing |
What happens when you determine the velocity of a particle |
