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CHEMISTRY 121 Spr 2011 Test #1

Chapters: 1, 2, 3. CHEMISTRY 121 Spr 2011 Test #1. Calculations Density; Heat (calories). Equation set-up Factor-label. Energy: diff. forms; types. Cmpds, elements, molecules Metal, nonmetal, metalloid. Physical/Chemical properties & changes Matter, diff. forms, phases

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CHEMISTRY 121 Spr 2011 Test #1

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  1. Chapters: 1, 2, 3 CHEMISTRY 121Spr 2011 Test #1 Calculations Density; Heat (calories) Equation set-up Factor-label Energy: diff. forms; types Cmpds, elements, molecules Metal, nonmetal, metalloid Physical/Chemical properties & changes Matter, diff. forms, phases Pure Subst: elements, cmpds ATOM & PARTS p+, n0, e- Mass/atomic numbers “Z”/”A” Isotopes; full notation Neutral/charges e- notation: long & short E-level Diagram Valence electrons Metric system: conversions, labels significant Figures; SI Untis; sci. notation 4 assumptions Atomic Theory

  2. Ch. 3 IONIC Names – Formulas Ionic Bond Acid – Base Identify Ch. 4 COVALENT Name – Formulas Models: dot, lewis, polar/non, shape TEST #2 H+ acids; OH- bases Geometry: Linear: A2, AB 180o Bent:AB2+2 lp; 104.5o Planar Triang: AB3; 120o Tetrahedral: AB4; 109.5o Pyramidal: AB3+1 lp; 107o Ch. 5&6 EQUATIONS Balance Rxn Types: C, D, SR, DR Redox: Red, Ox, & Agents Mass – Mass Conversions g to mols to particles Avogadro’s #: 6.02*1023 Bond TypesCovalent polar/nonpolar Electroneg: < 0.5 non, > 2.0 ionic bet. polar multiple choice, calculations, identify, define, diagram

  3. CH. 3 CH. 4 Ions, polyatomics, ionic bonds TEST #2 Covalent names & formula Ionization E, e- affinity Ionic names & formula H+ acids; OH- bases CH. 5&6 • Chemical Names & Formulas • I.D. Rxn types; complete equations, and balance • -atom, ion, ionic cmpd, molecule • TERMS: electronegativity, e- affinity, ionization E • Calculations: mole – mass – particles conversion factor: form. wt Avogadro’s # Formula/molecular wt.; molar mass Calculations: mole-mole & mass-mass

  4. CH. 7 Past Concepts TEST #3 Dissocation E-Enthalpy Endo/Exo Reactions +H / -H absorb/release RXN: I.D.types; equations, balance Ionic equations; reduced-oxidized Formula/molecular wt.; molar mass Calculations: mole-mole & mass-mass meaning:spont / non -G / +G Reaction Diagrams - slow/fast LeChatelier’s [ ], temp, P, catalyst Meaning of Keq: K<<<1 ??? K>>>1 ??? .01<K>100 ???

  5. FINAL CH. 9 Solubility effects: temp, P Solvent, Solute Electrolytes CH. 10 Definition: Acid, Base Conjugate Acid-Base Pairs Acid-Base ionization equaitons Strong Acid + Strong Base -----> ??? Strong Acid + Weak Base -----> ??? Weak Acid + Strong Base -----> ??? Weak Acid + Weak Base -----> ??? Dilution: M1V1 = M2V2 Concentration Molarity: mols/ L [w/v]% [v/v]% mass % pKw = pH + pOH pKw =14 Kw = [H+][OH-] Kw = 1*10-14 pOH = -Log[OH-] [OH-] = 1*10-pOH pH = -Log[H+] [H+] = 1*10-pH Ka/Kb constants Strength of Acids/”Bases” Relation between acid & conj. base base & conj. acid

  6. STILL NEED TO KNOW Chemical Formula Ions: charges Ionic Eqn. total & net ionic reduction-oxidation Formula Weight Convert moles <-> mass Intermolecular Forces Dipole; London; Hydrogen Bonding

  7. FINAL 14 Conversions metric mass - moles parts of atom p+, no, e- mass/atomic numbers Metal – Non – metaloid Formula Wt Reduction-Oxidation -total & net ionic eqn Limiting Reagent Polarity Forces dispersion dipole H-bonding Concentration Molarity: mols/L Dilution: M1V1 = M2V2 Equilibrium Thermodynamics G,  H,  S

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