Biology Chapter 2 And 3 Quiz

8 Questions | Total Attempts: 426

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Biology Chapter 2 And 3 Quiz

Ch 2 and 3. Campbell Biology.


Questions and Answers
  • 1. 
    Which of the following definitions is INCORRECT?
    • A. 

      Potential Energy: Energy that matter possesses because of its location or structure

    • B. 

      Element: Substance that cannot be broken down into other substances by chemical reactions.

    • C. 

      Compound: Substance consisting of 2 or more different elements combined in a fixed ratio.

    • D. 

      Trace Elements: Elements required by an organism in only minute quantities.

    • E. 

      All of the above are true; none are incorrect.

  • 2. 
    Which of the following definitions is CORRECT?
    • A. 

      The number of electrons is unique to an element, thus defining it.

    • B. 

      The 3-D space where an electron is found 90% of the time is called a shell.

    • C. 

      The s orbital has a sphere shape, and the p orbital has a figure-8 shape.

    • D. 

      Each s orbital can hold 2 electrons, while each p orbital can hold 6.

    • E. 

      Covalent bonds and ionic bonds are weak chemical bonds.

  • 3. 
    Which of the following can be used to represent a molecule?
    • A. 

      Name (molecular formula)

    • B. 

      Electron-shell diagram

    • C. 

      Structural formula

    • D. 

      Space filling model

    • E. 

      All of the above

  • 4. 
    Which of the following definitions is INCORRECT?
    • A. 

      Cation: negatively charged ion.

    • B. 

      Anion: positively charged ion

    • C. 

      Ion: charged atom or molecule

    • D. 

      A and B

    • E. 

      None of the above are incorrect.

  • 5. 
    Which of the following is INCORRECT?
    • A. 

      Hydrogen bond: forms when a hydrogen atom covalently bonded to one electronegative atom is also attracted to an electropositive atom (eg. Oxygen, Nitrogen)

    • B. 

      Van der Waals interactions are weak and only occur when atoms/molecules are very close together.

    • C. 

      Cohesion: attraction between molecules of the same substance.

    • D. 

      Polar molecule: opposite ends of the molecule have opposite charges. (eg. water is a polar molecule)

    • E. 

      Adhesion: attraction between molecules of different substances.

  • 6. 
    Which of the following is INCORRECT?
    • A. 

      Atoms and molecules have kinetic energy because they are always randomly moving.

    • B. 

      Ice is denser than water.

    • C. 

      Aqueous solution: a solution where water is the solvent.

    • D. 

      Solvent: dissolving agent of a solution.

    • E. 

      Solute: substance that is dissolved.

  • 7. 
    Which of the following is INCORRECT?
    • A. 

      Hydrophobic = "water hating" & Hydrophilli =: "water loving"

    • B. 

      Molar mass = Molecular Mass

    • C. 

      1 mole = 6.02 x 10^23 "objects"

    • D. 

      Molarity = number of moles of solute per liter of solution.

    • E. 

      None of the above are incorrect.

  • 8. 
    Which of the following is INCORRECT?
    • A. 

      Hydrogen ion has a positive charge of +1

    • B. 

      Hydroxide ion has a negative charge of -1

    • C. 

      [H+][OH-} = 10^-14

    • D. 

      PH = log [H+]

    • E. 

      Pure water has a pH of 7, and is when [H+] = [OH-]

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