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Physic Week 1-3

QuestionAnswer
What is Matter? Anything that has mass and takes up space. It's the fundamental building block of the universe, composed of atoms and molecules
What unit is used to measure matter? Kilograms (kg).
What is an atom? The smallest particle of an element that retains the properties of that element.
What are the three fundamental particles of an atom? Protons, neutrons, and electrons.
What gives a neutral atom a net charge of zero? Having an equal number of protons and electrons.
What is the atomic number (Z)? The number of protons in an atom's nucleus.
What determines the chemical element of an atom? Its atomic number (Z).
Who developed the periodic table of elements? Dmitri Mendeleev.
What are electron shells? Orbits where electrons exist around the nucleus, representing different binding energies.
What formula is used to calculate the maximum number of electrons in a shell 2n2
What is radiation? The transfer of energy through space.
What is ionizing radiation? Radiation with enough energy to remove an electron from an atom.
What is ionization? The process of removing an electron from an atom.
What are X-rays? A form of highly penetrating electromagnetic radiation.
What does ALARA stand for? As Low As Reasonably Achievable.
What is the purpose of ALARA? To minimize radiation exposure while still achieving diagnostic quality.
What invention helped radiology become a medical specialty? The Coolidge X-ray tube.
In what decade was Computed Tomography (CT) developed? The 1970s.
Why is radiology considered a safe occupation today? Because of effective radiation protection practices.
Created by: bmairet
 

 



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