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Chemistry test 2
| Term | Definition |
|---|---|
| oxidation | the process of losing electrons |
| reduction | the process of gaining electrons |
| oxidizing agent | always gets reduced |
| reducing agent | always gets oxidized |
| dilution equation | M1V1 = M2V2 |
| exothermic process | the reactants have a higher internal energy than the products - delta E is negative |
| endothermic process | the reactants have a lower internal energy than the products - delta E is positive |
| calorimeter heat of reaction | q (rxn) = -q (calorimeter) |
| heat equation | q = m*C*deltaT |
| enthalpy equation | deltaH = H (products) - H (reactants) |
| Hesse's Law | enthalpy for a reaction is the same whether it occurs in one step or several steps |
| specific heat of water | 4.18 J/g*deg.C |
| wavelength equation | speed = wavelength*frequency |
| speed of light in a vaccum | 3 * 10^8 |
| Planck's constant | h = 6.626*10^-34 |
| energy equation | -2.179*10^-18 (1/n^2) |
| absorbtion | up arrow |
| emission | down arrow |
| long wavelength, low frequency, low energy | short arrow |
| short wavelength, high frequency, high energy | long arrow |
| l = 0 | s |
| l = 1 | p |
| l = 2 | d |
| l = 3 | f |
| l = 4 | g |
| Pauli exclusion principle | no two electrons in an atom can have the exact same values for all four quantum numbers |
| Heisenberg uncertainty principle | it is impossible to know both the location and the momentum of an electron simultaneously |
| s orbital | spherical |
| p orbital | dumbbell |
| d orbital | cloverleaf |
| n | principal quantum number |
| l | angular momentum quantum number |
| Ml | magnetic quantum number |
| Ms | electron spin number |
| n | energy and distance from the nucleus |
| l | subshell - orbital shape |
| m | orbital orientation |
| energy equation | deltaE = heat (q) + work (w) |
| Max Planck | blackbody radiation, Planck's constant |
| Albert Einstein | the photoelectric effect |
| Niels Bohr | emission spectra, Bohr model of the atom |
| Werner Heisenberg | quantum mechanics, uncertainty principle |
| Schrondinger and Dirac | quantum mechanics |