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MR. SURRETTE VAN NUYS HIGH SCHOOL CHAPTER 9: ORGANIC CHEMISTRY WORKSHEET ANSWERS PART I. MULTIPLE CHOICE 1. Provide the condensed structural formula for pentane. (A) CH2CH3CH3CH3CH2 (B) CH3CH2CH2CH3 (C) CH3CH2CH2CH2CH3 (D) CH3CH2CH3 (E) CH2CH3CH3CH2 2. Organic chemistry is the study of the __________ atom. (A) nitrogen (B) chlorine (C) carbon (D) hydrogen (e) oxygen 3. The arrangement of atoms in molecules and polyatomic ions is depicted by: (A) abbreviated configurations (B) configurations (C) condensed structural diagrams (D) orbital diagrams (E) structural diagrams 4. Two atoms share four electrons. What type of bond exists between the two atoms? (A) single (B) double (C) triple (D) Van der waals (E) hydrogen 5. __________ show the actual number and kinds of atoms in a molecule. (A) orbital diagrams (B) elemental formulas (C) isomers (D) molecular formulas (E) empirical formulas 6. Several molecules with the same composition but different structures are called: (A) elements (B) isotopes (C) isomers (D) compounds (E) organic 7. __________ leave out some bonds and/or atoms within compounds. (A) Condensed structural formulas (B) Molecular formulas (C) Structural formulas (D) Organic formulas (E) Electron configurations 8. __________ are composed of only carbon and hydrogen atoms. (A) Alkyl halides (B) Hydrocarbons (C) Halogens (D) Alcohols (E) Amines 9. Hydrocarbons that do not contain double bonds, triple bonds, or ring structures are called: (A) alkenes (B) alkynes (C) alcohols (D) alkanes (E) alkyl halides 10. Hydrocarbons that contain double bonds are called: (A) alkynes (B) alcohols (C) alkanes (D) alkyl halides (E) alkenes 11. An alkane contains three carbon atoms. Provide its condensed structural formula. (A) CH3CH2CH3 (B) CH2CH3CH2 (C) C4H7 (D) CH3CH3CH2 (E) CH2CH2CH2 12. An alkyne contains two carbon atoms. Provide its condensed structural formula. (A) CH2CH (B) C2H4 (C) C2H2 (D) C2H (E) CH CHEMISTRY SCIENCE DEPARTMENT MR. SURRETTE 13. The alcohol functional group is: (A) OH (B) COOH (C) COH VAN NUYS HIGH SCHOOL (D) N 14. Nitrogen added to alkanes forms: (A) alkenes (B) alkanes (C) alcohols 15. The carboxyl functional group is: (A) OH (B) COOH (C) COH (D) N (E) H (D) aldehydes (E) amines (E) H PART II. SHORT ANSWERS 16. An alkane contains three carbon atoms. Draw its structural formula. 16A. PROPANE 17. An alcohol functional group connects to the C2H5 alkane. Draw the structural formula for this compound. 17A. ALCOHOL DERIVATIVE 18. An alkane contains two carbon atoms. One atom of chlorine is added to the alkane. Draw a possible structural diagram. 18A. CHLORINE ALKYL HALIDE CHEMISTRY SCIENCE DEPARTMENT MR. SURRETTE VAN NUYS HIGH SCHOOL 19. A carboxylic acid functional group connects to the C2H5 alkane. Draw the structural formula for this compound. 19A. CARBOXYLIC ACID 20. An alkyne contains two carbon atoms. Draw the structural diagram. 20A. ACETYLENE CHEMISTRY SCIENCE DEPARTMENT MR. SURRETTE VAN NUYS HIGH SCHOOL CHAPTER 9: ORGANIC CHEMISTRY QUIZ SOLUTIONS PART I. MULTIPLE CHOICE 1. Two atoms share four electrons. What type of bond exists between the two atoms? 1A. Double 2. __________ show the actual number and kinds of atoms in a molecule. 2A. Molecular formulas 3. Hydrocarbons that contain triple bonds are called: 3A. alkynes 4. Several molecules with the same composition but different structures are called: 4A. Isomers 5. An alkane contains three carbon atoms. Provide its condensed structural formula. 5A. CH3CH2CH3 6. An alkyne contains two carbon atoms. Provide its condensed structural formula. 6A. C2H2 7. Nitrogen added to alkanes forms: 7A. amines 8. Organic chemistry is the study of the __________ atom. 8A. carbon 9. The strongest chemical bonds belong to: 9A. carbon 10. Specific arrangement of atoms in an organic compound that undergo characteristic chemical reactions are called: 10A. functional groups 10. Organic chemistry is the study of the __________ atom. 10A. carbon 11. The arrangement of atoms in molecules and polyatomic ions is depicted by: 11A. structural diagrams 12. When halogens replace the hydrogen atoms in hydrocarbons they form: 12A. alkyl halides 13. __________ are composed of only carbon and hydrogen atoms. CHEMISTRY SCIENCE DEPARTMENT MR. SURRETTE VAN NUYS HIGH SCHOOL 13A. Hydrocarbons 14. Hydrocarbons that contain double bonds are called: 14A. alkenes 15. Nitrogen added to alkanes form compounds that are called: 15A. alkanes PART II. SHORT ANSWERS 16. An aldehyde functional group connects to the C3H7 alkane. Draw the structural formula for this compound. 16A. ALDEHYDE 17. An alkyne contains three carbon atoms. Draw a possible structural diagram. 17A. ALKYNE 18. An alkane contains four carbon atoms. Draw its structural formula. 18A. BUTANE CHEMISTRY SCIENCE DEPARTMENT MR. SURRETTE VAN NUYS HIGH SCHOOL 19. An alcohol functional group connects to the C3H7 alkane. Draw the structural formula for this compound. 19A. ALCOHOL DERIVATIVE 20. An alkane contains three carbon atoms. One atom of chlorine is added to the alkane. Draw a possible structural diagram. 20A. CHLORINE ALKYL HALIDE CHEMISTRY SCIENCE DEPARTMENT