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AP Chemistry Final Review Flashcards

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9784083401STP Conditions0 degrees Celsius/273 K, 22.4 L, 1 atm0
9784083402Densitymass / volume1
9784083403Molaritymoles / L2
9784083404DistillationDepends on differences in boiling point3
9784083405FiltrationSeparating a solid from a liquid4
9784083406ChromatographySeparating substances through differences in rates based on polarity5
9784083407Law of conservation of massMass is neither created nor destroyed6
9784083408Dalton's Atomic TheoryEach element is made up of tiny particles called atoms. The atoms of a given element are identical. Chemical compounds are forms when atoms of different elements combine with each other. Chemical reactions involve reorganization of the atoms (changes in the way they are bound together.)7
9784083409JJ ThomsonCathode Ray, discovered the electron8
9784083410MillikanOil Drop Experiment, determined mass and magnitude of the electron9
9784083411RutherfordGold Foil Experiment, discovered nuclei, atoms have a lot of space10
9784083412Solubility RulesAlways soluble: Chlorates, Acetates, Sulfates, Halogens, Nitrates, Group IA11
9784083413Solubility Rules ExceptionsInsoluble: Calcium, Barium, Strontium, Mercury, Silver, Lead (Sulfates) Insol: Mercury, Silver, Lead (Halogens)12
9784083414Strong ElectrolytesGood conductors WHEN DISSOLVED IN WATER, easily ionized (strong acids/bases and soluble salts)13
9784083415Weak ElectrolytesConduct currents very weakly WHEN DISSOLVED IN WATER (weak acids bases & poorly soluble salts)14
9784083416Strong AcidsHF, HBr, HCl, HClO4, HI, HNO3, H2SO415
9784083417Strong BasesAll Group 1 elements with OH- & Ca(OH)2, Sr(OH)2, Ba(OH)2,16
9784083418Dilution Formula AND Equivalence pointM1V1 = M2V217
9784083419Types of Chemical ReactionsPrecipitation reactions, Acid-Base reactions, and Redox reactions18
9784083420Precipitation reactionAn insoluble substance is formed as a result of the reaction19
9784083421Spectator ionsIons that do not participate in the reaction20
9784083422Bronsted-Lowry acidProton/H+ donor21
9784083423Bronsted-Lowry baseProton/H+ acceptor22
9784083424Arrhenius acidProduces H+ (H3O+) in water23
9784083425Arrhenius baseProduces OH- in water24
9784083428Equivalence pointEnough titrant added to analyte where moles of acid= moles of base25
9784083429EndpointIndicator changes color. Choose an indicator with an endpoint/color change near the equivalence point (pKa or pKb)26
9784083430Redox reactionElectrons are transferred27
9784083431OxidationLoss of electrons (LEO)28
9784083432ReductionGain of electrons (GER)29
9784083433Oxidizing agentCauses oxidation (is often reduced)30
9784083434Reducing agentCauses reduction (is often oxidized)31
97840834351 standard atmosphere1 atm, 760 mm Hg, 760 torr, 101.3 kPa (Ref Table)32
9784083437Boyle's LawP1V1 = P2V233
9784083438Charles's LawV1 / T1 = V2 / T234
9784083439Ideal Gas LawPV = nRT35
9784083440Molar mass of a gasmm = dRT / P36
9784083441Dalton's law of partial pressuresPtot = P1 + P2 + P3...37
9784083442Mole fractionmoles of substance/ moles total38
9784083443KMT (kinetic molecular theory)Volume of individual particles is negligible Particles are in constant motion Particles exert no forces on each other Collisions of particles with container walls are cause of pressure from gas39
9784083445DiffusionMixing of gases40
9784083446EffusionGas into a vacuum41
9784083645Graham's law of effusionAKA: gases with lower masses will diffuse faster42
9784083447Law of conservation of energyEnergy can be converted but never destroyed43
9784083448Potential energyEnergy from position or composition/stored in bonds44
9784083449Kinetic energyEnergy from motion45
9784083450HeatTransfer of energy with temperature46
9784083451WorkForce acting over a distance47
9784083452ExothermicEnergy out of the system48
9784083453EndothermicEnergy into the system49
9784083454First law of thermodynamicsThe energy of the universe is constant50
9784083457Heat capacityheat absorbed / increase in temperature51
9784083458Calorimetry equationq = mCAT52
9784083459Hess's Law RulesIf a reaction is reversed, the sign of delta H is reversed delta H is proportional to the quantities of reactions and products - if you multiple reaction, multiply H53
9784083460Standard enthalpy of formationchange in enthalpy with formation of one mole of compound from its elements54
9784083461Change in enthalpy for reactionsum of heat of formations of products - sum of heat of formations of reactions55
9784083462Wavelengthdistance between two peaks or troughs in a wave56
9784083463Frequencynumber of cycles per second57
9784083464Basic wave equationspeed of light = wavelength x frequency58
9784083465Energy of a photon equationPlanck's constant x speed of light / frequency59
9784083466Photoelectric effectEffect occurring when electrons are emitted from the surface of a metal when light strikes it60
9784083467Dual nature of lightLight acts as a wave and as particulate matter61
9784083468de Broglie's equationWavelength of a particle62
9784083469DiffractionLight is scattered from points or lines63
9784083470Types of electromagnetic radiation (smallest to largest)gamma, X-rays, UV, visible, IR, micro, radio64
9784083471Types of electromagnetic radiation (largest to smallest)radio, micro, IR, visible, UV, X-rays, gamma65
9784083472Heisenberg Uncertainty PrincipleWe cannot know both the position and momentum of an electron (the more we know one, the less we know the other)66
9784083473Pauli exclusion principleElectrons with the same spin cannot occupy the same space67
9784083474Aufbau principleProgressively add electrons to each sub level68
9784083475Hund's ruleDifferent electrons to different orbitals, same spin69
9784083476Ionization energyEnergy required to remove a valence electron from an atom70
9784083477Electron affinityEnergy change associated with the addition of an electron to a gaseous atom71
9784083478Atomic radius trendDecreases across a period (more effective nuclear charge), increases down a group (more electron shielding)72
9784083479Ionization energy trendIncreases across a period (electron shielding not complete), decreases down a group (more electron shielding)73
9784083480Coulomb's lawEnergy of interaction between a pair of ions74
9784083481Bond energyEnergy needed to break bond75
9784083482Covalent bondingElectrons are shared by nuclei76
9784083483ElectronegativityAbility of an atom in a molecule to attract shared electrons to itself77
9784083484Dipolar or dipole momentWhere the electrons move when passing another atom so that they temporarily create a postive side & negative side and then continue o their way.78
9784083485Lattice energyChange in energy when separated gas ions form an ionic solid Equation: LE = k(Q1Q2 / r) k is proportionality constant, Q is charge of ions, r is shortest distance between centers of ions79
9784083486Localized electron modelMolecule is composed of atoms bound together by sharing pairs of electrons80
9784083487Lone pairsPairs of electrons localized81
9784083488Localized electron model partsLewis diagram, VSEPR model (geometry), type of atomic orbitals82
9784083489ResonanceMore than one valid Lewis structure83
9784083490Bond angle of a linear shape?18084
9784083491Hybridization of a linear shape?sp85
9784083492Number of bonds in a linear shape?286
9784083494Bond angle of a trigonal planar shape?12087
9784083495Hybridization of a trigonal planar shape?sp288
9784083496Number of bonds in a trigonal planar shape?389
9784083498Bond angle of a bent shape?~109.590
9784083499Hybridization of a bent shape?sp291
9784083500Number of bonds in a bent shape?292
9784083502Bond angle of a tetrahedral shape?109.593
9784083503Hybridization of a tetrahedral shape?sp394
9784083504Number of bonds in a tetrahedral shape?495
9784083506Bond angle of a trigonal pyramidal shape?~109.596
9784083507Hybridization of a trigonal pyramidal shape?sp397
9784083508Number of bonds in a trigonal pyramidal shape?398
9784083509Number of nonbonding pairs in a trigonal pyramidal shape?199
9784083516Bond angles of a trigonal bipyramidal shape?120, 90100
9784083517Hybridization of a trigonal bipyramidal shape?sp3d101
9784083518Number of bonds in a trigonal bipyramidal shape?5102
9784083520Bond angle of a see-saw shape?<120 along middle, from middle to bottom or top <90103
9784083521Hybridization of a see-saw shape?sp3d104
9784083522Number of bonds in a see-saw shape?4105
9784083523Number of nonbonding pairs in a see-saw shape?1106
9784083524Bond angle of a T-shape?<90107
9784083525Hybridization of a T-shape?sp3d108
9784083526Number of bonds in a T-shape?3109
9784083527Number of nonbonding pairs in a T-shape?2110
9784083528Bond angle of a linear (2) shape?180111
9784083529Hybridization of a linear (2) shape?sp3d112
9784083530Number of bonds in a linear (2) shape?2113
9784083531Number of nonbonding pairs in a linear (2) shape?3114
9784083532Bond angle of an octahedron?90115
9784083533Hybridization of an octahedron?sp3d2116
9784083534Number of bonds in an octahedron?6117
9784083536Bond angle of a square pyramidal shape?<90118
9784083537Hybridization of a square pyramidal shape?sp3d2119
9784083538Number of bonds in a square pyramidal shape?5120
9784083539Number of nonbonding pairs in a square pyramidal shape?1121
9784083541Bond angle of a square planar shape?90122
9784083542Hybridization of a square planar shape?sp3d2123
9784083543Number of bonds in a square planar shape?4124
9784083544Number of nonbonding pair in a square planar shape?2125
9784083546Metallic bondDelocalized electron126
9784083547Nonpolar covalent bondEqual sharing of electrons127
9784083548Polar covalent bondUnequal sharing of electrons128
9784083549Ionic bondTransfer of electrons129
9784083550Electronegativity differencesNonpolar covalent (0-0.4), polar covalent (0.4-1.67), ionic (above 1.67)130
9784083551Sigma bondBond between the s orbitals131
9784083552Pi bondBond between the p orbitals132
9784083553Hydrogen bondSpecial type of dipole, hydrogen with N, F, or O atom. Must have an H bonded to other FON AND attracted to another H bonded to a FON133
9784083554London dispersion forcesBetween non polar molecules. Temporary dipole moment.134
9784083555AlloyContains a mixture of elements and has metallic properties135
9784083556Substitutional alloyMetal atoms replaced by metal atoms of same size136
9784083557Interstitial alloySmall atoms in holes137
9784083558Vapor pressurePressure of vapor at equilibrium138
9784083560Temperature and vapor pressure?Vapor pressure increases significantly with temperature139
9784083561IMFs and vapor pressure?High IMFs --> low vapor pressure, Low IMFs --> high vapor pressure140
9784083562Crystalline solidsComponents organized in a lattice141
9784083563Amorphous solidsComponents frozen in place with no arrangement142
9784083564Heat of fusionEnthalpy change which occurs at the melting point when a solid melts143
9784083565SublimationSolid directly to gas144
9784083572Positive delta HEnergy absorbed145
9784083573Negative delta HEnergy released146
9784083574Pressure and solubilityIncreases solubility of a gas147
9784083575Henry's LawAmount of gas dissolved proportional to pressure of gas above solution148
9784083576Temperature and solubilityIncreases solubility of solid, decreases solubility of gases149
9784083584Reaction rateChange of concentration over time (Rate = delta [A] / delta t)150
9784083585Rate lawRate depends on concentration, rate = k [a][b]151
9784083586Integrated rate lawConcentrations depends on time (make graphs time vs CNR)152
9784083587Initial rateInstantaneous rate after reaction begins153
9784083588CatalystIncreases rate of reaction but not consumed154
9784083589Surface area and rateMore surface area increases rate155
9784083590Temperature and rateHigher temperature increases rate156
9784083591Zeroth order rate lawRate = k157
9784083593Zeroth order plot[A] vs. t158
9784083594Zeroth order slopeSlope = -k159
9784083596First order rate lawRate = k[A]160
9784083597First order integrated rate lawln[A] = - kt + ln[A]0161
9784083598First order plotln[A] vs. t162
9784083599First order slopeSlope = -k163
9784083600First order half lifet1/2 = 0.693 / k164
9784083601Second order rate lawRate = k[A]2165
9784083602Second order integrated rate law1/[A] = kt + 1/[A]0166
9784083603Second order plot1/[A] vs. t167
9784083604Second order slopeSlope = k168
9784083606Reaction mechanismSeries of steps169
9784083607A --> productsRate = k[A]170
9784083608A + A --> productsRate = k[A]2171
9784083609A + B --> productsRate = k[A][B]172
9784083610A + A + B --> productsRate = k[A]2[B]173
9784083611A + B + C --> productsRate = k[A][B][C]174
9784083612Rate determining stepSlowest step175
9784083613Reaction mechanism requirementsSum must give balanced equation, mechanism must agree with rate law176
9784083614Equilibrium expressionProducts raised to coeffs over reactants raised to coeffs see RT177
9784235245Keq/Ka/Kb/Kp or just KUsed when THE REACTION IS AT EQUILIBRIUM178
9784229438Q versus KQ must be used when the reaction is NOT AT EQUILIBRIUM. They will ask you if, at that point, the reaction will need to proceed to the right (create more reactants) or to the left (create more products) in order to MATCH K179
9784083615K = QEquilibrium, no change180
9784083616K < QPROCEED to reactants (following the symbol <---)181
9784083617K > QPROCEED to products (---->)182
9784259060Proceed vs Shift-Shifts occur only when the reaction HAS ALREADY BEEN at equilibrium and then something is added/removed/changed. -Proceed is used when they want to know what will happen in order to establish equilibrium in the first place!183
9784083618Le Chatlier's PrincipleChange imposed, equilibrium shifts to lessen change184
9784083619More product addedShift to reactants185
9784083620More reactant addedShift to product186
9784083621How to change the pressure of a reaction system?Add or remove gas, add an inert gas, change volume187
9784083622KaAcid dissociation constant188
9784083623Strong acidEquilibrium is far to the right, has weak conjugate base189
9784083624Weak acidEquilibrium is far to the left190
9784083625Monoprotic acidsOne acidic proton191
9784083626AmphotericCan behave as an acid or a base (water)192
9784083627KwWater dissociation constant193
9784083628pH-log[H+]194
9784083629pOH-log[OH-]195
9784083630pKa-logKa196
9784083631pH of strong acidsDepends on concentration of H+ ions197
9784083632pH of weak acidsFind Ka and use an ice chart198
9784083633Percent dissociationAmount dissociated M / initial concentration M x 100%199
9784083634Polyprotic acidsDissociates in a stepwise manner, find Ka of each step200
9784083635Bond strength and acid strengthLess bond strength, more acid strength201
9784083636Common ion effectShift in equilibrium because of addition of common ion202
9784083637BufferResists a change in pH203
9784083638Henderson Hasselbach EquationUsed to find the pH of a buffer Change it to: pH = pKa + log (moles base)/(moles acid)204
9784296981Using the H-H equationIf base is added = add those new moles to the base part (top) and subtract from the acid (bottom) If acid is added = add those new moles to the acid part (bottom) and subtract from the base (top) Turn K they give you to Ka or Kb (use Kw)205
9784083639Strong acid-strong base titration curveEquivalence point is 7206
9784083640Weak acid-strong base titration curveEquivalence point is greater than 7, has a halfway equivalence point207
9784083641Acid-base indicatorChanges color at the end point (not same as equivalence point)208
9784083642pH of indicatorKa/[H+] = [In-]/[HIn] = 1/10, ratio reversed for bases209
9784284974Half-Equivalence Point AKA MIDPOINT1) pH = pKa210
9784083643KspSolubility product211
9784272472Solubility product vs molar solubilitySolubility product = Ksp, must plug into expression Molar solubility = concentration in mol/L or M, either given or work backwards212
9784193119Melting/Boiling Points: Ionic CompoundsUse Coulomb's law. Explanation: ions with smaller radii and/or larger charge will have greater electrostatic attraction and therefore have greater lattice energy, requiring more energy to melt/boil/dissolve.213
9784205015Melting/Boiling Points: Molecules (covalent)MUST MENTION IMFS see above. Example: H2O has a higher boiling point than CH4 because water has all three types of forces: LDF, dipole, and most importantly, hydrogen-bonding. CH4 only has LDF and thus the molecules are held together more weakly which requires less energy to boil/melt. etc.214

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