Presentation on theme: "Countdown to the AP Exam A+ webinar Debbie Anderson."— Presentation transcript:
Countdown to the AP Exam A+ webinar Debbie Anderson
Multiple Choice (Periodic Table) 75 Questions 90 min 1 minute per question Write on test –Underline key words, calculations, cross out answers No calculator: round, scientific notation X by questions no clue O questions you could work with more time Always re-work the 1 st 5 questions Erase completely Look at all the answers Questions; “Which of the following”, treat as T/F
Free Response (Tables and Formulas) 55 min 3 problems (calculators) – Show calculations – Units, Units, Units 40 min 4 (net ionics) 5 and 6 – Write clearly, Be Specific –Show train of thought assume nothing – Justify - Define – Vocabulary- atom, molecule, ion, solution Energy, force, strong- weak (not big or little)
Reviewing for AP ExAM Critical to success-----3’s, 4’s, 5’s Now it is time – – Coach the test – Scrimmage –practice on old tests – Cover tid-bits – Enhance self-esteem or build confidence – Review, reteach, reinforce
Tools Mock exam Multiple choice – Analysis of weaknesses Free Response – Analysis of writing justifications Old Tests (AP Central Website, NMSI) 2 more multiple choice ( No calculator format) 2002, 2008 3-5 more Free Response Saturday Review Sessions Review Sheets (Tom Boyd) Video segments – Demonstrations, labs, topics Study Guide Books
Activities Students presentations Student mock reading Student demos Goal- Students are Learning and Practicing Teachers do not re-teach. Lead student to learn, review, and connect. This builds confidence!
Bits and Pieces Formal charge Bond length and strength Paramagnetic/Diamagnetic Sigma and Pi Bonds ( organic) Molar Mass? Grams/mole Colligative properties Electron/molecular geometry Balancing nuclear equation – particles Percent yield/percent error
Internal Energy E = q + w w = - nrt Percent by mass Mole fraction
Words to justify size ionization energy intramolecular bond strength intermolecular bond strength polarity of molecules solubility > 4 bonds bond angles Shifts in equilibrium K and Q Moles for completions reactions ICE/ Molarity for equilibrium, kinetics, pH Units and signs in Thermo
Connect the Units Stoichiometry – Limiting reagent, percent yield – Three ways to get liters (density, Molarity, pv =nrt) – Thermo - Heat produced in reaction – Kinetics - instantaneous rate – Equilibrium –titrations
Debbie’s tips Intramolecular bonds (atom-atom) chemical change Intermolecular bonds (molecular-molecular) physical change Questions about atoms – first write electron configuration Questions about molecules begin with lewis dot stuctures
FYI or TMI Lone pairs are closer to nucleus forcing bond pairs closer together ( VSEPR) Dispersion forces greater in larger molecules because of more electrons Polarizability(Bonding –physical changes) Double bonds are shorter because of delocalized electrons in pi bonds yet more chemically reactive Empty valence orbitals (Metal ion) Acids undergo dissociation Bases undergo hydrolysis When drawing resonance use between structures
Teaching tips continued Crystals 4 types – Molecular (hydrogen bonds, dipole-dipole, dispersion forces) – Ionic (size and magnitude of charge) – Metallic (size of ion) – Covalent network crystal Unit Cell (8 corners –lattice sites)=> crystal lattice Diamond (carbon-sp3- covalent network crystal Graphite (carbon –sp3, sp2- delocalized pi bonds holding layer together
Speed math Formula box – Gibbs Free Energy – Nerst Equation Modified HH for buffers Multiple choice – round, think 1/2 or 1/4, use scientific notation when dividing by decimal
Final Note Encourage, Encourage, Encourage It is not too late Special treats Change the room around AP students have tutoring for pre-AP’s Good Luck!!!!!!!!!!!