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AP Chemistry Flashcards

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9734384835atomic radiusdistance between nuclei of adjacent atoms in an element0
9734403486atomic radius increases going ___ and ____ when on the periodic tabledown and left1
9734405475ionization energythe energy required to remove an electron from a gaseous atom2
9734418188ionization energy increases going ___ and ___ when on the periodic tableup and right3
9734427357electronegativitythe relative ability of an atom in a bond to attract electrons (excludes noble gases)4
9734441713electronegativity increases going ___ and ___ when on the periodic tableup and right5
9734475585isotopesame element with different amount of neutrons6
9734479643ioncharged particle/atom7
9734490112-ate ->-ic8
9734490113-ite ->-ous9
9734492387-ide ->hydro___ic acid10
9734501637pauli exclusion principleelectrons of the same spin can not occupy the same orbital11
9734505210aufbau principleelectrons fill orbitals in a sequence of most stability12
9734513447hund's ruleelectrons must occupy each sub-orbital by one pairing up13
9734521047octet ruleall atoms like to have 8 valance electrons14
9734540574principle quantum number (n)orbital in which the electron is located. higher n is higher energy of the electron because it is less tightly bonded to the nucleus15
9734553601angular momentum quantum number (l)shows the shape of the atomic orbital - l=0 (s orbital) - l=1 (p orbital) - l=2 (d orbital) - l=3 (f orbital)16
9734577098magnetic quantum number (m)shows the orientation of the orbital - can be -l to l17
9734581312electron spin number (s)shows the spin state of the electron in an orbital - can be -1/2 or 1/218
9734592299polar covalent bondcovalent bond where electrons spend more time around a more electronegative atom19
9734603594lattice energythe energy released when an ionic compound is formed20
9734630969Enthalpy of formation (ΔH°f)the overall enthalpy of the formation of ONE mole of a compound. it is the summation of all the steps involved in the formation of the compound21
9734672958bond polaritymeasure of how equally the electrons in a bond are shared between the two atoms of the bond22
9734693075sigma bond (σ)-electron density is along the bond axis -end to end overlap of orbitals23
9734707284pi bonds-electron density is above and below the bond axis24
9734713878single bonds are....sigma bonds (σ)25
9734720056double bonds are...1 sigma bond and 1 pi bond26
9734723560triple bonds are...1 sigma bond and 2 pi bonds27
9734731343strong electrolytewhen a compound 100% dissociates in a solvent28
9734738366strong acid100% dissociates in water -H+ donor -OH acceptor29
9734741257strong base100% dissociates in water -OH donor -H+ acceptor30
9734755468oxidationwhen an electron loses electrons (oxidation numbers increase)31
9734760987reductionwhen an element gains electrons (oxidation number decreases)32
9734771560dipole-dipole attractionattraction between polar particles33
9734774671ion-dipole attractionattraction between cation or anion with a dipole34
9734783549dipole induced dipole attractionwhen a polar molecule causes an instantaneous dipole in a nonpolar molecule35
9734791838hydrogen bondingstrongest intermolecular force, when Hydrogen bonds with Oxygen or Nitrogen or Fluorine36
9734797281london dispersion forcesweakest intermolecular force, temporary dipoles that occur due to unsymmetrical distribution of electrons37
9734835303heat of fusionenergy from solid to liquid38
9734848111heat of vaporizationenergy from liquid to gas39
9734854080heat of sublimationenergy from solid to gas (skipping liquid)40
9734863350triple pointconditions where solid,liquid,gas phases coexist41
9734865725critical pointcritical temperature and pressure, beyond this point gas cannot be condensed into liquid42
9734875303boiling pointthe point at which vapor pressure is equal to atmospheric pressure43
9734885198molalitymols of solute per kg of solvent44
9734888228mol fractionmols of solute / mols of all parts of solution45
9734904691monatomic gasesnoble gases46
9734918134dalton's law of partial pressuresthe total pressure of a mixture of gases equals the sum of the pressures that each gas would exert if it were present alone47
9734945790bond enthalpyH= E breaking - E forming -breaking = reactants -forming = products48
9734968093reaction ratethe change in concentration of reactants or products per unit time (mol/L*s)49
9734995575rate lawlinks reaction rate with concentrations of reactants at constant temperatures and order perameters rate=k(A)^x * (B)^y for A+B->C50
9735017601reaction order(x , y) 0=zero order 1=1st order 2=second order51
9735027014zero orderwhen the rate of a reaction is independent of reactant concentration -rate=k52
9735036448first orderwhen the rate of reactant depends on the concentration of one reactant -linearly graphed53
9735043112second orderwhen a rate depends of either 1 second order reactant or 2 first order reactants54
9735060892activation energythe minimum amount of energy required for reactants to undergo a reaction55
9735066855chemical equilibriumwhen the forward and reverse reaction proceeds at equal rates56
9735072078law of mass actionrate of any reaction is proportional to the product(s) of the reacting substances raised to the power of its coefficients57
9735081392k>1product favored58
9735083734k<1reactant favored59
9735083735k=1equilibrium position60
9735092741k=concentration of products / concentration of reactants61
9735110213reactant quotient (Q)when the law of mass action is applied to initial concentrations and compared to the Keq to determine the equilibrium shift -the ratio of products to reactants62
9735123979Q=kequilibrium position63
9735127020Q>kequilibrium shifts left to reactants64
9735128856Qequilibrium shifts right to products65
9735148452when you increase the concentration of reactants...equilibrium goes to the products66
9735159201when you decrease the concentration of the reactants...equilibrium goes to the reactants67
9735164176when you increase the concentration of the products...equilibrium goes to the reactants68
9735168962when you decrease the concentrations of products...equilibrium goes to the products69
9735173206when you increase pressure...equilibrium goes to the least amount of mols of gas70
9735176333when you decrease pressure...equilibrium goes to the most amount of mols of gas71
9735189544endothermic rxn : temp increase =equilibrium goes to the products -delta H needed72
9735196196endothermic rxn : temp decrease =equilibrium goes to the reactants -delta H needed73
9735202928exothermic rxn : temp increase =equilibrium goes to the reactants -delta H needed74
9735207288exothermic rxn : temp decrease =equilibrium goes to the products -delta H needed75
9735211929negative delta Hexothermic rxn76
9735214491positive delta Hendothermic rxn77
9735227238solubility productksp . concentration of product ions times the concentration of the reactant ions that are present in a saturated solution of an ionic compound78
9735238899Q>kspsuper-saturated solution, precipitation is favored79
9735243900Qunsaturated solution, dissolved state is favored80
9735248626common ion effectwhen the concentration of an ion is increased, more solid will precipitate (solubility lowers)81
9735263909conjugate acidcompound that results after an H+ is accepted82
9735271053conjugate basecompound that results after an H+ is donated83
9735304816a buffer system includes...a weak acid or base with a salt containing its conjugate base84
9735311597buffer solutiona solution that resists changes in pH85
9735317004strong acid with a strong base pH curve86
9735323196weak acid with a strong base pH curve87
9735328279weak base with a strong acid pH curve88
9735332481diprotic acid pH curve89
9735343102entropycalculation of disorder / randomness within the universe (S)90
9735353259free energythe amount of useful work that can be obtained from a process at constant temp (298 k) and pressure (1 atm) (G)91
9735361702positive delta Gnon-spontaneous92
9735366186negative delta Gspontaneous93
9735370273cathodereduction occurs, accepting electrons94
9735372755anodeoxidation occurs, donating electrons -the half rxn with the lowest E value is reversed95
9735386921line notationsanode components on the left, cathode on the right. divide by a double line96
9735393892dead batterya redox rxn at equilibrium97
9777614485viscosityresistance of a liquid to flow98
9777624009crystalline solidcontain highly ordered structures, with a regular pattern99
9777629491amorphous solidsstructures are not completely regular100
9777669441cohesive forcesinter-molecular forces that bind similar molecules to one another101
9777682946adhesive forcesinter-molecular attractions that bind a substance to a surface102
9777695661vapor pressurethe pressure exerted by the vapor when at equilibrium103
9777699486volatile liquida liquid that evaporates readily104
9777723370boyle's lawP1V1=P2V2 -graph of V vs. P inverse relationship curve105
9777732820charle's lawV1/T1=V2/T2 -graph of V vs. T is linear106
9777745143Gay Lussac's LawP1/T1=P2/T2107
9777750603ideal gas lawPV=nRT108
9777756271avogadro's lawthe volume of gas maintained at constant temperature and pressure is directly proportional to the number of moles of the gas109
9777770331partial pressurethe pressure exerted by a particular component of a mixture110
9777803502graham's law of diffusionrate1/rate2= square root of (molar mass2/molar mass1)111
9777856353arrhenius equationrelates activation energy, number of collisions, and fraction of effective collisions k=Ae^-Ea/RT112
9777905096catalystsincreases the rate at which equilibrium is achieved113
9777974696reducing agentthe species that is oxidized114
9777977324oxidizing agentthe species that is reduced115
9777985201salt bridgeallows ions to move to maintain charge neutrality in both half-cells116

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