it14spr101.40bc2t1 2 3.txt

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Anonymous
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256807
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it14spr101.40bc2t1 2 3.txt
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2014-01-15 21:48:16
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profmwinston
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Group B Chapter 2 Topic 1,2,3
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  1. What is anything that has weight and takes up space is composed of elements?
    Matter
  2. What is the study of composition of substances and how they change?
    Chemistry
  3. What is the study of chemistry in living organisms?
    Biochemistry
  4. What are fundamental substances which comprise all matter?
    Elements
  5. What are chemical combinations of elements?
    compounds
  6. What are elements needed by the body in large amounts?
    Bulk Elements
  7. What are elements that are needed by the body in small amounts?
    Trace elements
  8. What are elements that are needed by the body in very small amounts?
    Ultra-Trace Elements
  9. What is the smallest particle of an element that has properties of that element?
    Atoms
  10. What is the attraction called when some atoms combine with atoms like themselves or with other atoms?
    Chemical Bonds
  11. What is the central portion of an atom?
    Nucleus
  12. What is located circling around the nucleus?
    Electrons
  13. What is located in the central portion of an atom and carries a single positive charge?
    Protons
  14. What is located in the central portion of an atom which does not carry a charge?    Neutrons
    Neutrons
  15. What is the number of protons in the atoms of a particular element?
    Atomic Number
  16. What is the number of protons plus the number of neutrons in each of an elements atoms?
    Atomic Weight
  17. What are atoms that have the same atomic numbers but different atomic weights?
    Isotope

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