Chemistry I – Flashcards
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| What is wave lengths symbol? |
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| What is freguencys symbol? |
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| What is electromagnetic radiation? |
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| form of energy that comes in waves |
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| What is c? |
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| speed of light; 3.00x10^8 m/s |
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| What is electromagnetic spectrum? |
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| all forms of electromagnetic radiation; only freguency and wavelegth differ |
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| What is a quantum? |
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| minimum amount of energy that can be gained or lost in an atom |
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| What is Planks constant? |
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| Value: 6.626x10^-34 |
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| What is the photoelectric effect? |
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| photoelectrons are emitted when light is put onto metal |
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| What is a photon? |
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| massless particle that carries a quantom of energy |
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| What is an atomic emission spectrum? |
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| consistent waves from an atom of an element |
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| What is ground state? |
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| opposite of excited |
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| What is a quantum number? |
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| number assigned to each orbit |
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| What is the de Broglie equatoin? what does each variable represent? |
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| lamba = h/mv lambda=wavelegnth h= Planks Constant m = mass of particle v = velocity |
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| What is the Heisenberg uncertainty princible? |
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| its impossible to precisely find the velocity and position of a paritcle at the same time |
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| What is the Quantum Mechanical Model of the Atom? |
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| Electrons are waves |
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| What is the atomic orbital? |
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| a three deminsional region around the nucleus |
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| What is the principal quantum number? |
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| (n) indicates the relative size and energy of atomic orbitals |
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| What is the principle energy level? |
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| Major energy level |
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| What are energy sublevels? |
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| Principle energy levels contain this |
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| What shape are p orbitals? s? d? f? |
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| p = dumbell shaped s = spherical d&f = not the same |
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| What is electron configuration? |
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| arrangement of electrons |
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| What is the aufbau principle? |
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| each electron is in the lowest energy level possible |
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| What is the Pauli exclusion principle? |
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| 2 electrons can contain one orbital |
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| What is Hund's rule? |
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| single electrons with the same element repel. (CHARGES) up%down arrows |
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| What is a valence electron? |
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| electrons on the outermost orbitals |
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| Electron-dot structure? |
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| element symbols which represent the atomic nucleus and inner-level electrons |
