Biology Test 2 Part 2

11 Questions | Total Attempts: 235

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Biology Test 2 Part 2

Going over Biologys' 2nd test part 2


Questions and Answers
  • 1. 
    In which of these are the electrons always shared unequally?
    • A. 

      Double covalent bond

    • B. 

      Polar covalent bond

    • C. 

      Triple covalent bond

    • D. 

      Ionic and covalent bonds

    • E. 

      Hydrogen bond

  • 2. 
    An example of a hydrogen bond would be the
    • A. 

      Bond between a carbon atom and a hydrogen atom.

    • B. 

      Bond between two carbon atoms.

    • C. 

      Bond between sodium and chlorine.

    • D. 

      Bond between two water molecules.

  • 3. 
    Water flows freely, but does not separate into individual molecules because water is
    • A. 

      Cohesive.

    • B. 

      Hydrophobic.

    • C. 

      Hydrophilic.

    • D. 

      Adhesive.

  • 4. 
    Water can absorb a large amount of heat without much change in temperature, and therefore it has
    • A. 

      A high heat capacity.

    • B. 

      A high surface tension.

    • C. 

      Ten times as many hydrogen ions.

    • D. 

      Ten times as many hydroxide ions.

  • 5. 
    Which of these properties of water cannot be attributed to hydrogen bonding between water molecules?  
    • A. 

      Water stabilizes temperature inside and outside the cell.

    • B. 

      Water molecules are cohesive.

    • C. 

      Water is a solvent for many molecules.

    • D. 

      Ice floats on liquid water.

    • E. 

      Water stablizes temperature inside and outside the cell. as well as Water is a solvent for many molecules

  • 6. 
     This Graph illustrates
    • A. 

      That ice is less dense than water.

    • B. 

      That ice is more dense than water.

    • C. 

      Why ice floats on water.

    • D. 

      That ice is less dense than water.As well as Why Ice is more dense than water. are correct

    • E. 

      Why water molecules form hydrogen bonds with other water molecules.

    • F. 

      All of these are correct.

  • 7. 
    Acids
    • A. 

      Release hydrogen ions in solution.

    • B. 

      Cause the pH of a solution to rise above 7.

    • C. 

      Take up sodium ions and become neutral.

    • D. 

      Increase the number of water molecules.

    • E. 

      Release Hydrogen ions in solution and cause the Ph of a solution to rise above 7

  • 8. 
    Which of these best describes the changes that occur when a solution goes from pH 5 to pH 8?
    • A. 

      The hydrogen ion concentration decreases as the solution goes from acidic to basic

    • B. 

      The hydrogen ion concentration increases as the solution goes from basic to acidic.

    • C. 

      C. The hydrogen ion concentration decreases as the solution goes from basic to acidic.

  • 9. 
    When water dissociates, it releases
    • A. 

      Equal amounts of H+ and OH–.

    • B. 

      b. more H+ than OH–.

    • C. 

      C. more OH– than H+.

    • D. 

      D. only H+.

  • 10. 
    Rainwater has a pH of about 5.6; therefore, rainwater is
    • A. 

      A neutral solution.

    • B. 

      An acidic solution.

    • C. 

      A basic solution.

    • D. 

      It depends on whether the rainwater is buffered.

  • 11. 
    If a chemical accepted H+ from the surrounding solution, the chemical could be
    • A. 

      A base.

    • B. 

      None of these are correct.

    • C. 

      An acid.

    • D. 

      A buffer.

    • E. 

      A base and an acid

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