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Exam 1

Radiographic Physics

QuestionAnswer
Smallest particle of an element that retains the properties of that element? atom
The number of protons in an atom's nucleus & number determines the chemical element is called Anatomic number Z
the innermost shell ? K shell
ionizing radiation? Radiation with enough energy to remove an electron from an atom as it passes through matter
cosmic rays, terrestrial radiation, and Radon are what type of radiation? natural environmental radiation
What is an ion? atom that has gained or lost an electron, giving it a net electrical charge
What is an isotope? Atoms with the same number of protons but a different number of neutrons (same atomic number, different atomic mass)
What is filtration? filters are used to absorb low-energy X-rays before they reach the patient, reducing unnecessary dose.
matter is measured in? kilograms
potential energy? stored energy
What is conduction? Heat transfer by direct contact
What are the fundamental particles? protons, neutrons, and electrons.
Who first described an element as being composed of identical atoms? John Dalton
What is half-life? time it takes for a quantity of radioactive material to decay to one-half of its original value
What is the shell number called? principal quantum number (n)
Created by: ashleymarshall
 

 



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