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help on test 1 - CHAPTER 3 AP BIOLOGY SCORENAME: _ DATE:_...

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CHAPTER 3 AP BIOLOGY NAME: ____________________ DATE:_____________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) In a single molecule of water, the two hydrogen atoms are bonded to a single oxygen atom by A) nonpolar covalent bonds. B) polar covalent bonds. C) ionic bonds. D) hydrogen bonds. E) van der Waals interactions. 2) The partial negative charge at one end of a water molecule is attracted to the partial positive charge of another water molecule. What is this attraction called? A) a hydrophobic bond B) an ionic bond C) a hydrogen bond D) a hydrophilic bond E) a covalent bond 3) Which of the following is an example of a hydrogen bond? A) the bond between the H of one water molecule and the O of another water molecule B) the bond between C and H in methane C) the bond between Na and Cl in salt D) the bond between Mg and Cl in MgCl 2 E) the bond between two hydrogen atoms 4) Water is able to form hydrogen bonds because A) oxygen has a valence of 2. B) the water molecule is polar. C) the hydrogen atoms in a water molecule are weakly negative in charge. D) the water molecule is shaped like a tetrahedron. E) the oxygen atom in a water molecule has a strong positive charge. 5) What is the maximum number of hydrogen bonds a water molecule can form with neighboring water molecules? A) four B) five C) one D) three E) two 6) What determines the cohesiveness of water molecules? A) covalent bonds B) hydrogen bonds C) ionic bonds D) high specific heat E) hydrophobic interactions 7) What do cohesion, surface tension, and adhesion have in common with reference to water? A) All increase when temperature increases. SCORE
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B) All have to do with nonpolar covalent bonds. C) All are produced by covalent bonding. D) All are properties related to hydrogen bonding. E) Both A and C are correct. 8) Water is transported in plant tissues against gravity due to which of the following properties? A) adhesion B) hydrogen bonding C) cohesion D) two of the above E) all of the above 9) Which of the following is possible due to the surface tension of water? A) Lakes don't freeze solid in the winter, despite low temperatures. B) The pH remains neutral. C) Water can act as a solvent. D) A waterstrider can walk across a small pond. E) Organisms resist temperature changes although they give off heat due to chemical reactions. 10) When an ice cube cools a drink 1eC, which of the following is true ? A) Evaporation of the water increases. B) Kinetic energy in the drink decreases. C) A kilocalorie of heat is transferred to the ice. D) Molecule collisions in the drink increase. E) A kilocalorie of heat is transferred to the water. 11)
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This note was uploaded on 12/02/2011 for the course CSC 100 taught by Professor Morgan during the Spring '11 term at Jackson State.

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help on test 1 - CHAPTER 3 AP BIOLOGY SCORENAME: _ DATE:_...

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