TABULATION OF SCORES: FIRST TERM Name: _____________________________ Chapter Number Chapter Title Worksheet Number 1-1 1-2 1-3 1 General Chemistry Review: Covalent Bonding and Shapes of Molecules 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12 1-13 Date __________________ Worksheet Title Drawing Lewis Structures for molecules with one central atom Drawing Lewis structure for molecules with more than one central atom Drawing Lewis structure for molecules with multiple bonds Drawing Resonance Structures Drawing Resonance Structures and Formal Charge Predicting Molecular Shapes with 2, 3 or 4 Electron Groups Predicting the bond angles and geometries Comparison of Bond Strength Predicting the polarity of the bond Polarity of the molecules London Dispersion Forces Drawing Hydrogen Bonds between Molecules of a Substance Predicting the Type and Relative Strength of Intermolecular Forces SUBTOTAL Parents Signature ___________________________ Perfect Score My Score 9 9 9 9 9 12 12 12 10 10 10 9 10 130 Date ________________________ MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE Drawing Lewis Structures for molecules with one central atom Draw a Lewis structure for: 1. CCl4 (carbon tetrachloride) a) Molecular formula: b) Atom Placement: c) Sum of Valence Electrons: 1. C = 2. Cl =________ 3. Total = d) Remaining Valence Electrons: e) Lewis Structure: 2. NH3 (ammonia) 3. HF MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE Drawing Lewis structure for molecules with more than one central atom Draw a Lewis structure for: 1. CH3OH (ethanol) 2. CH3OCH3(dimethyl ether) 3. NH3O (hydroxylamine) MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE Drawing Lewis structure for molecules with multiple bonds Draw a Lewis structure for: 1. HCN 2. HCOCH3 3. CH3COOH MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ Drawing Resonance Structures Draw Lewis structures of all the important resonance forms of: 1. NO2+ 2. NO2F (N is central) 3. CO32- SCORE MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE Drawing Resonance Structures and Formal Charge Draw a Lewis structure for the most important resonance form of each ion showing formal charges. 1. HCOO - 2. SO32- 3. CO32- MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE Predicting Molecular Shapes with 2, 3 or 4 Electron Groups Determine the molecular shape and ideal bond angle(s) for each of the following: 1. CO32- 2. SO2 3. CH4 4. H2O MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE Predicting the bond angles and geometries Predict the bond angles and geometries about each highlighted atom. (Remember to take into account the presence of unshared pairs of electrons.) 1. CH3CH2OH 2. CH3NH2 3. CH3 C Ξ CH 4. CH2 = CHCl MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE Comparison of Bond Strength Like several other bonds, carbon-oxygen bands have lengths and strengths that depend on the bond order. Draw Lewis structures for the following species and arrange them in order of increasing carbon-oxygen bond strength: a) CO b) CO32- c) H2CO d) CH4O e) HCO3- MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE Predicting the polarity of the bond Consider the bonds in the compounds CBr4, F2, H2O, CH4, NH3 and O2. 1. Which has bonds that are polar? 2. Which has bands that are nonpolar? 3. Arrange the bonds in decreasing polarity. MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE Polarity of the molecules Predict whether the following molecules are polar or nonpolar. Indicate the direction of the polarity. 1. CH2Cl2 2. CH3OH 3. CH3COOH 4. CH3CN MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE London Dispersion Forces Predict the substance in each of the following pairs would have the greater London dispersion forces. 1. CO2 or OCS 2. SeO2 or SO2 3. CH3CH2CH2NH2 or H2N CH2CH2NH2 4. CH3CH3 or H2CO 5. CH3CH2CH2NH2 or CH3CH2CH2CH2NH2 MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ SCORE Worksheet # ________ Drawing Hydrogen Bonds between Molecules of a Substance Which member of each pair of compounds forms intermolecular Hydrogen bonds? Draw the Hbonded structures in each case: OH H3C H3C CH3 1. S CH3 or OH H3C H H 2. H3C O CH3 or O H3C H3C 3. O O CH3 or H MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ SCORE Worksheet # ________ Predicting the Type and Relative Strength of Intermolecular Forces For each pair of substances, identify the key intermolecular force(s) in each substance and select the substance with the higher boiling point. 1. MgCl2 or PCl3 2. CH3COCH3 or CH3CH2CH2CH3 3. CH3OH or CH3CH3 O H3C H3C 4. O O CH3 or H MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE MIRIAM COLLEGE HIGH SCHOOL ORGANIC CHEMISTRY Name ____________________________ Class Number_______________ Year and Section___________________ Date______________________ Worksheet # ________ SCORE