CHEM 103 Final Exam Study Guide PDF

CHEM 103 Final Exam Study Guide Topics to Review 1) Significant Figures, Unit Conversions (memorize common metric prefixes and 1 in = 2.54 cm), density as a conversion factor, Temperature conversions 2) Atomic Theories, Subatomic Particles (Electrons, protons, Neutrons), Ions, and Isoto...

CHEM 103 Final Exam Study Guide Topics to Review 1) Significant Figures, Unit Conversions (memorize common metric prefixes and 1 in = 2.54 cm), density as a conversion factor, Temperature conversions 2) Atomic Theories, Subatomic Particles (Electrons, protons, Neutrons), Ions, and Isotopes 3) Classifying Matter, Chemical and Physical Properties, Density as conversion factor, Energy Units, and Heat Energy calculations 4) Periodic Table, Formulas, and Nomenclature (Type 1, 2, 3, and Acids) 5) Writing and Balancing Chemical Equations, Complete Ionic, Spectator ions, and Net Ionic equations, Classifying Reactions by Type and Pattern 6) Quantities in Chemical Reaction, Converting moles particles, grams moles, formula as conversion factor, empirical & molecular formulas mass percent and formula mass 7) Stoichiometry (Converting g->mol->mol->g), Limiting Reactant, Theoretical, Actual and Percent Yield 8) Models of Atom (Bohr and Nuclear), Proportionality of Energy, frequency and wavelength, Electron Configurations and Orbital Diagrams, Periodic Trends (Size, Ionization Energy and Electron Affinity) 9) Bonding Models (Dot Symbols for Ionic Compounds) Lewis Dot Structures for Molecular and Polyatomic Ions, Resonance Structures, Shape of Molecules, Electronegativity and Molecular Polarity. 10) Gases, KMT, Gas Laws, Gases and Stoichiometry Two Constants are given Specific Heat of Liquid Water = 4.184 J/g oC, Ideal Gas Constant = 0.0821 L atm / mol K You need to memorize some conversions 1 in = 2.54 cm, 1 mL = 1 cm3, milli = 10-3, micro = 10-6, nano = 10-9, 1cal = 4.184J, 1Cal=103 cal 1 mol = 6.02 x 1023 particles, 1 atm = 760 mmHg = 760 torr = 101, 325 Pa You need to Memorize Formulas q = m∙Cs∙∆T ∆T = Tf – Ti g->mol->mol->g %yield = (Actual/Theoretical)*100, % = g element -> mol element, ratio to get whole numbers = empirical, multiple n = (molecular mass / E.F. molar mass), Molecular formula= n(E.F.) T(K) = T(oC) + 273.15 T(oC) = (T(oF) - 32)/1.8 d = m/V PV= nRT, Ptot= P1 + P2 STP = 1 atm and 273.15 K, 1 mol gas at STP = 22.4 L Note about net ionic equations – leave liquid, solid, and gas phase things alone they do not break up into ions Testing Strategy Read each problem carefully including all answer choices Eliminate any answer choices that clearly cannot be correct Work all problems that you can answer quickly (under 1 min) Circle the problem number on Scantron form for those that you will need to work or check later Never change an answer unless you are certain of the correct answer and that you had chosen incorrectly the first time. Label your scratch paper with the problem number for questions that require work (that way you can re-check your work if you finish early)