+JMJ+ Chemistry Semester Exam Study Guide Spring 2014 The exam for Chemistry is scheduled for Thursday, May 29th at 11am in the Theater. This exam for will be a comprehensive exam encompassing all material we have covered since August. This study guide is intended to be an outline of the major topics presented in this class. It is not worth any points and will not be collected. It is also not an extensive list of material, but a guide to prompt your studying. You are responsible for all of the material we have covered in chapters 1-10 in addition to any special topics presented and/or discussed. If you have questions about a particular topic, don’t be afraid to ask in class or see me for help. Teaching and quizzing one another will serve very useful in demonstrating your mastery of the material, so study together and ask questions. I. Written Exam Details A) 100 multiple choice questions, scantron (1 point each) B) 8 Short Answer Questions (10 points each; 80 points) C) 1 Critical Thinking (20 points) II. Chapter 6: Covalent Compounds A) Vocabulary: Covalent bond Orbital Bond length Bond energy Polar and nonpolar covalent bonds Dipole Valence electron Lewis dot structure Unshared pairs of electrons Single/double/triple bonds Polyatomic ions Resonance structures VSEPR theory B) Key concepts: VSEPR theory* (Molecular geometry) Identifying from the periodic table how many valence electrons an element has and drawing Lewis dot structures of molecules. Determining if a bond is polar based on the electronegativity of an atom. Naming compounds, -ide suffix for anions. C) Sample problems: #33 and #34 on page 217 III. Chapter 7: The Mole and Chemical Composition A) Vocabulary: Mole Avogadro’s number Molar mass Average atomic mass (a weighted avergage, like grade point average) Percent composition Empirical formula +JMJ+ Molecular formula B) Key concepts: Molar conversions Calculating an average atomic mass Differences between coefficients and subscripts Finding a percent composition C) Sample Problems: #24 on page 252 #29 on page 252 # 42 on page 253 #50 on page 253 #556 on page 253 IV. Chapter 8: Chemical Equations and Reactions A) Vocabulary: Chemical reaction Chemical equation Polyatomic ion Reaction types: Combustion Synthesis Decomposition Single displacement Double displacement Activity series Net ionic equations Spectator ions B) Key concepts: Key symbols associated with chemical equations Using the activity series Using the solubility rules table Recognizing a reaction type from its chemical equation C) Sample Problems: #16 on page 293 #29, 30 on page 293 #35 on page 294 V. Chapter 9: Stoichiometry (Sections 1 and 2 only) A) Vocabulary: Stoichiometry Limiting reactant Excess reactant Actual yield Theoretical yield Percentage yield B) Key concepts: CONVERSIONS! Mole-to-mole ratios Determining which reactant is limiting or in excess. +JMJ+ C) Sample problems: #21 on 329 #32 and 36 on 331 VI. Chapter 10: Causes of Change (Thermodynamics) A) Vocabulary: Heat Enthalpy Temperature Thermodynamics Calorimeter/Calorimetry Hess’ Law Entropy Gibbs’ Energy