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AP Chemistry Flashcards

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13906489454Oxidationloss of electrons0
13906489455Reductiongain of electrons1
13906498904Oxidea binary compound of oxygen with another element or group.2
13906504333Oxidizing agentelectron acceptor3
13906507347Reducing agentelectron donor4
13906516611Strong AcidsHCl, HBr, HI, HNO3, H2SO4, HClO45
13906520013Strong bases1A and heavy 2A hydroxides6
13906546900gas forming reactionsH2CO3 -> H2O + CO2 S + H2 -> H2S(g)7
13906557366Electrolytedissociates8
13906562144strong electrolytedissociates completely9
13906566466weak electrolytepartially dissociate10
13906577040Periodicitythe repeating pattern of chemical and physical properties of the elements11
13906577042Coulombs LawF=K q₁*q₂/r²12
13906585298Zeff (effective nuclear charge)Z (Atomic #) - S (Screening constant = #inner electrons)13
13906602440Size of Atom trendIncreases down and left (Zeff increases)14
13906614909Size of ions- Cations are smaller than original atom - Anions are larger - Ion size increases down a group - From left to right they get smaller (because nuclear charge increases), then suddenly larger (once it changes from cations to anions)15
13906620512Ionization energyThe amount of energy required to remove an electron from an atom16
13906625198Ionization energy trendincreases up and to the right17
13906635480Smaller atoms have ___ ionization energieshigher18
13906642143electron affinitythe energy change that occurs when an electron is acquired by a neutral atom19
13906646192electron affinity trendincreases to the right and up20
13906655655lattice energythe energy released when one mole of an ionic crystalline compound is formed from gaseous ions21
13906657346Lattice energy trendincreases up and to the right22
13906660713ElectronegativityA measure of the ability of an atom in a chemical compound to attract electrons23
13906660715electronegativity trendincreases up and to the right24
13906667326Lewis dot structure steps25
13906698255free radicalschemical particles with an odd number of electrons26
13906700408Hypervalentmolecules and ions with more than an octet of electrons around the central atom27
13906702753electron domainin the VSEPR model, a region about a central atom in which an electron pair is concentrated28
13906706501Kinetic Molecular Theory of Gases1. gases made up of negligible volume 2. no intermolecular attractions/repulsions 3. elastical collisions 4. constant random motion 5. kinetic energy of gas is related to T 6. same moles of gas=same kinetic energy29
13906738308Celcius to KelvinK=C+27330
13906742475van der Waals equation[P+(an^2)/(V^2)][V-nb]=nRT a = strength of attraction b = Size of molecule31
13906756410Real Gas LawReal gasses only conform to PV=nRT at Low pressures High temps32
13906774475EffusionA process by which gas particles pass through a tiny opening33
13906776273DiffusionMovement of molecules from an area of higher concentration to an area of lower concentration.34
13906780719Kinetic energy of gasKE=1/2mv^2 Same Temp - KE = KE35
13906789700Grams law of effusion36
13906803854van der Waals forcesa slight attraction that develops between the oppositely charged regions of nearby molecules37
13906808402London dispersion forces- Attractions between momentary dipole - All molecules - Polarizability38
13906823114London Dispersion forces are effected by...Usually Weak Shape - Long skinny have stronger Weight - Increases with molecular weight. Larger clouds are easier to polarize39
13906832748dipole-dipole forcesattractions between oppositely charged regions of polar molecules40
13906837310dipole-dipole forces are effected by...Polarity - Increases with increase in polarity41
13906856563Hydrogen BondingVery Strong Dipole-Dipole interaction with H + N, O, or F42
13906867447Viscosityresistance to flow43
13906868963surface tensionA measure of how difficult it is to stretch or break the surface of a liquid44
13906868964Vapor Pressure- As temp rises, the fraction of molecules having enough energy to escape increases - Pressure increase45
13906905665Boiling poingWhen its Vapor pressure = Atmospheric Pressure46
13906908591Normal Boiling PointThe T that VP is 760 torr or 1 ATM47
13906914380Heat of fusionAmount of energy required to change a substance from the solid phase to the liquid phase.48
13906914381heat of vaporizationThe amount of energy required for the liquid at its boiling point to become a gas49
13906916823Triple Point3 phases coexist50
13906923821rate of reaction depends onCatalyst Higher Temp Concentration Homogeneous mixture51
13906933541Reaction rate equation (change in concentration-Δ[A]/Δt = Δ[B]/Δt52
13906942699steric factorSize + Orientation53
13906950394Rate Equationrate = K[A]^a[B]^b54
13923106378Activated complexa transitional structure that results from an effective collision and that persists while old bonds are breaking and new bonds are forming55
13923112000Maxwell-Boltzmann distributionThe distribution of energies (and therefore speeds) of the molecules in a gas or liquid.56
13923138907Arrhenius equationK=Ae^(-Ea/RT) k is the rate constant A is pre-exponential factor: how often particles collide in correct orientation.57
13923212924reaction mechanismthe step-by-step sequence of reactions by which the overall chemical change occurs58
13923222789elementary reactiona reaction in which reactants are converted to products in a single step59
13923240000molecularitythe number of molecules that participate as reactants in an elementary reaction60
13923245948rate law and order for elementary reactions is determined byCoefficients61
13923295642Kp to KcKp = Kc(RT)^delta n62
13923303754Kp = Kc whenthere are the same number of moles of gas on each side of the equation63
13923308986Keq > 1products are favored64
13923311526Keq < 1reactants favored65
13923330309k = q whenSystem is in equilibrium66
13923339118Equilibrium QuotientQ = [Products]/[Reactants]67
13923905469Q > Kshift left68
13923908069Q < Kshift right69
13923917227AmphiproticA species that can either accept or donate a proton.70
13923917228Amphoterica substance that can act as both an acid and a base71
13923930504Kw1.0 x 10^-1472
13923930505pH= -log[H+]73
13923944849% Ionization[H3O+eq]/[HAinitial] x 10074
13923964716Kaacid dissociation constant75
13923964717Kbbase dissociation constant76
13923972850Higher Kbstronger base77
13923972851Lower Kaweaker acid78
13923975356Higher Kastronger acid79
13923975357Lower Kbweaker base80
13923981939polyprotic acidan acid that can donate more than one proton per molecule81
13923987418Ka * KbKw82
13923991850pH + pOH =1483
13923991852pKa + pKb =pKw = 1484
13924011211Factors affecting acid strenght- Polarization of Hx bond - Stronger bond = weaker acid - Less stability = weaker acid85
13924023595If x is in same group bond strenght is _ importantmore86
13924048284If x is in the same period, bond polarity is _ importantmore87
13924059537Carboxilic AcidCOOH88
13924078269Carboxilic Acids draw ___ from ___ Increase ___ of bond Increases ____- Electron density, OH bond - Polarity - Acidity89
13924094001Bottom Line of acid strenghtAnything that pulls electrons away from the ionizable hydrogen (making a weaker bond) makes the acid more acidic90
13924113626common ion effecta decrease in the solubility of an ionic compound caused by the addition of a common ion91
13924116202Buffercompound that prevents sharp, sudden changes in pH92
13924119509Henderson-Hasselbalch equationpH = pKa + log [A-]/[HA]93
13924124516Strong acid-strong base titration curveequivalence point: pH=794
13924134039Weak acid-strong base titration curveEquivalence point is greater than 7, has a halfway equivalence point95
13924144006strong acid weak base titrationSlow decline in pH followed by a rapid decrease at equivalence point. End point of indicator should be < 7.96
13924196420Ksp =[prodA][prodB] (the bigger, the more soluble)97
13924207529Heat up and cool downq = mc{delta}t98
13924216368Phase Changeq = n{delta}h fus/vap99
13924230060Hess's lawthe overall enthalpy change in a reaction is equal to the sum of enthalpy changes for the individual steps in the process100
13924238421calorimetry equationmcdeltaT=mcdeltaT101
13924286760deltaSsurr=-deltaH/T102
13924300068Oxidation occurs at theanode103
13924302664Reduction occurs at thecathode104
13924307321electromotive force (emf)The power supplied by the supply per unit current.105
13924328654A stronger oxidizing agent exhibits more _______Positive reduction potential106

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