Chemistry Cumulative Final Exam Questions With Correct Answers

Chemistry Cumulative Final Exam Questions With Correct Answers What makes carbon such a unique element? A) Elemental carbon comes in two forms, diamond and graphite. B) Carbon forms four bonds, although the ground state configuration would predict the formation of fewer bonds. C) Carbon forms covalent bonds rather than ionic bonds. D) To a greater extent than any other element, carbon can bond to itself to form straight chains, branched chains and rings. E) Carbon has two stable isotopes, carbon-12 and carbon-13 - ANSWER : D) To a greater extent than any other element, carbon can bond to itself to form straight chains, branched chains and rings. A molecule with the formula C3H8 is a(n): A) hexane B) propane C) decane D) butane E) ethane - ANSWER : B) propane The general formula for noncyclic alkenes is: A) CnH2n+2 B) CnH2n C) CnH2n-2 D) CnHn+2 E) CnHn - ANSWER : B) CnH2n Which of the following formulas represents an alkene? A) CH3CH2CH3 B) CH3CH3 C) CH3CH2CHCH2 D) CH3CH2Cl E) CHCH - ANSWER : C) CH3CH2CHCH2 Which is NOT a physical property of alcohols or phenols? A) Phenols are generally only slightly soluble in water. B) The solubilities of normal primary alcohols in water decrease with increasing molecular weight. C) The hydroxyl group of an alcohol is nonpolar. D) Due to hydrogen bonding, boiling points of alcohols are much higher than those of corresponding alkanes. E) Boiling points of normal primary alcohols increase with increasing molecular weight. - ANSWER : C) The hydroxyl group of an alcohol is nonpolar.