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LAE 3
chem vocab
Term | Definition |
---|---|
first law of thrmo | E=q+w |
endothermic | it absorbs heat |
exothermic | it releases heat |
enthalpy | H=E+PV |
calorimetry | the amount of heat transferred between the system and the surroundings is measured experimentally |
heat capacity | the amount of heat required to raise its temp by 1K |
molar heat capacity | the heat capacity for one mole of a pure substance |
hess law | states that regardless of the multiple stages or steps of a reaction, the total enthalpy change for the reaction is the sum of all changes. |
electronic structure of an atom | describes the energy and arrangement of electron |
wavelength and frequency | w*f=c |
quantum of energy | E=HV |
6.626*10^-32 | plank constant |
ground state | the lowest energy is achieved for n=1 |
excited states | other values of n |
matter waves | All matter can exhibit wave-like behavior. |
momentum | W=H/MV |
uncertainty principle | which states that there is an inherent limit to the accuracy with which the position and momentum of a particle can be measured simultaneously. |
orbitals | the allowed wave functions of the hydrogen atom |
electron shell | is the set of all orbitals with the same value of n, such as 3s,3p, and 3d |
subshell | is the set of one or more orbitals with the same n and l values |
nodes | regions in which the wave function is zero |
valence orbitals | The type of orbital that the valence electrons reside in |
isoelectronic series | is a series of ions that has the same number of electrons |
ionization energy | the minimum energy needed to remove an electron from the atom in gas phase |
electron affinity | the energy change upon adding an electron to an atom in the gas phase |
ozone | an important allotrope of oxygen. |