Radiation concepts chapt. 2

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Author:
jreynolds222
ID:
256194
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Radiation concepts chapt. 2
Updated:
2014-01-12 17:56:23
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Radiological Tech
Folders:
principles of radiographic imaging
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radiation concepts
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  1. two categories of natural science
    • 1) physical science- study of non-living matter
    • 2) Biological science - study of living matter
  2. Studies matter and energy and their interrelationships
    Physics
  3. Describes substance that comprises all physical objects, has shape and form and occupies space.
    Matter
  4. The force and object exerts under the influence of gravity
    • weight 1 kilogram(kg) = 1000 grams (g)
    •            1 pound (lb) = 16 ounces (oz)
  5. A material that has a definite and constant composition
    • substance
    • simple = elements
    • complex = compunds
  6. how many natural occurring elements are identified on the periodic table
    92
  7. two or more elements chemically united in definite proportion
    compounds
  8. smallest particle of an element
    atom
  9. two or more atoms chemically united
    molecule
  10. ability to do work
    energy = Joule (J)
  11. Energy is emitted and transferred through matter
    radiation
  12. atoms can be subdivided into three basic atomic particles
    • protons (p+)
    • neurons (0)
    • electrons (e-)
  13. four basic components of matter
    air, water, earth, and fire
  14. atom is composed of a small dense center and houses the protons and neutrons (nucleons) which makes up all the mass of an atom
    nucleus
  15. located outside the nucleus and cannot be divided into smaller parts
    electrons
  16. smaller subnuclear structures that are found in protons and neutrons
    quarks

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