Molecules, Building Blocks Of Life

10 Questions | Attempts: 220
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Questions and Answers
  • 1. 
    When two or more atoms bond together they form a
    • A. 

      Mixture

    • B. 

      Molecule

    • C. 

      Compound

    • D. 

      Atom

  • 2. 
    All molecules are made up of
    • A. 

      Hydrogen

    • B. 

      Atoms

    • C. 

      Compounds

    • D. 

      Other Molecules

  • 3. 
    Molecules can be easily separated.
    • A. 

      True

    • B. 

      False

  • 4. 
    Why do atoms bind together to form molecules?
    • A. 

      To create a nucleus with a neutral charge

    • B. 

      To fill their valence electron shell and become a more stable substance

    • C. 

      To share an equal number of protons

  • 5. 
    Which of the following is an example of a substance that is composed of molecules?
    • A. 

      Sodium

    • B. 

      Carbon Dioxide (CO2)

    • C. 

      Gold

  • 6. 
    Molecules join together by
    • A. 

      Sharing electrons

    • B. 

      Distributing the atoms' mass evenly

    • C. 

      Sharing protons

    • D. 

      Sharing neutrons

    • E. 

      Both C and D

  • 7. 
    A molecule has different properties from the elements from which is was made.
    • A. 

      True

    • B. 

      False

  • 8. 
    Molecules are held together by what kind(s) of bonding?
    • A. 

      Ionic Bonding

    • B. 

      Covalent Bonding

    • C. 

      Metallic Bonding

    • D. 

      Both A and B

    • E. 

      Both B and C

  • 9. 
        What is the name of this molecule?
    • A. 

      Hydroxide (OH)

    • B. 

      Water (H2O)

    • C. 

      Oxygen (O2)

    • D. 

      Hydrogen (H2)

    • E. 

      Both C and D

  • 10. 
    Which of these is a true statement?
    • A. 

      Molecules are always moving

    • B. 

      All molecules are the same mass

    • C. 

      All molecules are the same size

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