Ch. 2 Chemical Basis of Life

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dezkwondo
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29240
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Ch. 2 Chemical Basis of Life
Updated:
2010-08-07 16:05:46
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Anatomy Physiology
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Basic Chemistry
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  1. Which of the following is NOT one of the major elements present in the human body:
    A. Oxygen C. Iron
    B. Carbon D. Hydrogen
    C. Iron
  2. Which of the following NOT a subatomic particle:
    A. Proton C. Isotope
    B. Electron D. Neutron
    C. Isotope
  3. The total number of electrons in an atom equals the number of:
    A. Neutrons in its nucleus C. Protons in its nucleus
    B. Electrons in its nucleus D. Ions in its nucleus
    C. Protons in its nucleus
  4. An atom can be described a chemically inert if its outermost electron shell contains:
    A. Three electrons C. Six electrons
    B. Five electrons D. Eight electrons
    D. Eight electrons
  5. Isotopes are atoms of elements that differ in their number of:
    A. Protons C. Neutrons
    B. Electrons D. Nuclei
    C. Neutrons
  6. Ionic bonds are chemical bonds formed by the:
    A. Sharing of electrons between atoms
    B. Transfer of electrons from one atom to another
    C. Acceptance of protons from one atom to another
    D. Donation of protons from one atom to another
    B. Transfer of electrons from one atom to another
    (this multiple choice question has been scrambled)
  7. Chemical bonds formed by the sharing of electrons are called:
    A. Ionic C. Hydrogen
    B. Covalent D. Electronic
    B. Covalent
  8. A chemical reaction in which substances combine to form more complex substances is called:
    A. Synthesis C. Exchange
    B. Decomposition D. Reversible
    A. Synthesis
  9. True or False
    Matter is a term used by chemists to describe all the materials or substances around
    us.
    True
  10. True or False
    Atomic weight refers to the number of protons plus the number of neutrons in an
    atom.
    True
  11. True or False
    Sodium chloride is an example of a covalent bond
    False
  12. True or False
    Hydrogen bonds form from an equal charge distribution within a molecule
    False
  13. True or False
    The digestion of food is an example of a decomposition reaction
    True
  14. Name the following element

    O
    Oxygen
  15. Name the following element

    Ca
    Calcium
  16. Name the following element

    K
    Potassium
  17. Name the following element

    Na
    Sodium
  18. Name the following element

    Mg
    Magnesium
  19. Name the following element

    Fe
    Iron
  20. Name the following element

    Se
    Selenium

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