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LAE 3

chem vocab

TermDefinition
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.
Created by: tttttttty
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