Biology Final Chapter 2

6 Questions | Total Attempts: 103

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Biology Quizzes & Trivia

Final review of biology. chapter 2 final review for final exam.


Questions and Answers
  • 1. 
    Which of the following elements is least abundant in your body
    • A. 

      Carbon

    • B. 

      Oxygen

    • C. 

      Phosphorus

    • D. 

      Iron

  • 2. 
    Which of the following are compounds
    • A. 

      Mgci2

    • B. 

      H2

    • C. 

      Fe

    • D. 

      C2h6

  • 3. 
    Which of the following is not a chemical reaction
    • A. 

      Sugar and oxygen gas combine to form carbon dioxide and water

    • B. 

      Sodium metal and chlorine gas unite to form sodium chloride

    • C. 

      Hydrogen gas combines with oxygen gas to form water

    • D. 

      Ice melts to form liquid water

  • 4. 
    At atom can be changed into an ion by adding or removing____________. an atom can be changed into a different isotope by adding or removing___________. But if you change the number of __________, the atom becomes a different element.
  • 5. 
    A sulfur atom has 6 electrons in its third shell, which is its outer shell.  As a result, it forms _______ covalent bonds with other atoms.
  • 6. 
    Explain what a polar molecule is
    • A. 

      Is slightly negative at one end and slightly positive at the other

    • B. 

      Has an extra electron, giving a positive charge

    • C. 

      Has an extra electron, giving a negative charge

    • D. 

      Has covalent bonds

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