Biol 1010 chpt 2 review test

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littlewhitewitch
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92606
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Biol 1010 chpt 2 review test
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2011-07-07 20:53:13
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Biol chpt review test
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Biol 1010 chpt 2 review test
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  1. The atomic mass of an atom depends primarily on the number of:
    A. protons and neutrons
    B. neutrons and electrons
    C. protons and electrons
    D. positrons
    A. protons and neutrons.
    (this multiple choice question has been scrambled)
  2. The most abundant element by eight in the human body is:

    A. carbon
    B. hydrogen
    C. oxygen
    D. nitrogen
    C. oxygen
    (this multiple choice question has been scrambled)
  3. This rule staqtes that the outer electron shell is most stable when it contains eight electrons.

    A. shell rule
    B. octet rule
    C. stability rule
    D. atomic rule
    B. octet rule.
    (this multiple choice question has been scrambled)
  4. How many more electrons does nitrogen require to fill its outer shell?
    A. 0
    B. 4.
    C. 2.
    D. 3
    D. 3
    (this multiple choice question has been scrambled)
  5. A substance with a radioactive tag attached that allows a researcher to tract it in a living system is called a
    A. positron
    B. neutron
    C. tracer
    D. noble gas
    C. tracer
    (this multiple choice question has been scrambled)
  6. Which type of chemical bond is formed when atoms share electrons?

    A. ionic
    B. nitrogen
    C. covalent
    D. hydrogen
    C. covalent bond
    (this multiple choice question has been scrambled)
  7. A covalen bond in which electrons are not shared equally is called:

    A. nonpolar
    B. polar
    C. normal
    D. neutral
    B. polar
    (this multiple choice question has been scrambled)
  8. Water flows freely, but does not separate into individual moecules because water is:

    A. adhesive.
    B. hydrophobic
    C. cohesive
    D. hydrophilic
    A. cohesive
    (this multiple choice question has been scrambled)
  9. Compounds having an affinity for water are said to be

    A. hydrophilic
    B. cohesive
    C. adhesive
    D. hydrophobic
    C. hydrophilic
    (this multiple choice question has been scrambled)
  10. Water freezes from the top down because:

    A. water has a high surface tension
    B. ice is less dense than water
    C. ice has a high heat capacity
    D. ice is less cohesive than water.
    B. ice is less dense than water.
    (this multiple choice question has been scrambled)
  11. Water can absorb a large amount of heat without much change in temperature because it has a high

    A. hydroixed ion (OH -) concentration
    B. heat capacity
    C. surface tension
    D. hydrogen ion (H+) concentration
    B. heat capacity
    (this multiple choice question has been scrambled)

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