Radiologic Science for Technologists 11th Edition Bushong Test Bank, Exams of Radiology

Download Radiologic Science for Technologists 11th Edition Bushong Test Bank and more Exams Radiology in PDF only on Docsity! Radiologic Science for Technologists 11th Edition Bushong Test Bank Radiologic Science for Technologists 11th Edition Bushong Test Bank Radiologic Science for Technologists 11th Edition Bushong Test Bank Chapter 02: The Structure of Matter Bushong: Radiologic Science for Technologists: Physics, Biology, and Protection, 11th Edition MULTIPLE CHOICE 1. The term “atom” was first used by the . a. Ethiopians b. British c. Greeks d. Romans ANS: C The term “atom” was first used by the Greeks DIF: Moderate REF: p. 27 OBJ: Relate the history of the term “atom.” 2. The first person to describe an element as being composed of identical atoms was . a. J. J. Thomson b. John Dalton c. Dmitri Mendeleev d. Niels Bohr ANS: B The first person to describe an element as being composed of identical atoms was John Dalton. DIF: Moderate REF: p. 27 OBJ: Name the first person to describe an element as being composed of identical atoms. 3. The smallest particle that has all the properties of an element is a(n) . a. neutron b. proton c. electron d. atom ANS: D The smallest particle that has all the properties of an element is an atom. DIF: Moderate REF: p. 28 OBJ: Define the atom. 4. The periodic table of the elements was developed by in the late 19th century. a. Bohr b. Rutherford c. Mendeleev d. Roentgen ANS: C The Periodic Table was developed by Mendeleev. Radiologic Science for Technologists 11th Edition Bushong Test Bank c. isotope d. isomer ANS: A An atom that loses or gains one or more electrons is an ion. DIF: Moderate REF: p. 31 OBJ: Define an ion. 14. The maximum number of electrons that can exist in an electron shell is calculated with the formula . a. 2n b. 2n2 c. 2/n d. 2/n2 ANS: B The number of electrons in an electron shell is calculated with the formula 2n2. DIF: Difficult REF: p. 32 OBJ: Identify the formula for the maximum number of electrons that can exist in an electron shell. 15. A neutral atom has the same number of _ and electrons. a. quarks b. neutrinos c. neutrons d. protons ANS: D A neutral atom has the same nuUmbSer oNf prTotons anOd electrons. DIF: Easy REF: p. 34 OBJ: Identify the formula for the maximum number of electrons that can exist in an electron shell. 16. The innermost electron shell is symbolized by the letter . a. J b. K c. L d. M ANS: B The innermost electron shell is symbolized by the letter K. DIF: Moderate REF: p. 32 OBJ: Recognize the symbol for the innermost electron shell. 17. The shell number of an atom is called the . a. alpha particle b. chemical element c. principal quantum number d. half-life number ANS: C The shell number of an atom is called the principal quantum number. Radiologic Science for Technologists 11th Edition Bushong Test Bank DIF: Moderate REF: p. 32 OBJ: Define the shell number of an atom. 18. The atomic number of an element is symbolized by the letter . a. A b. X c. Z d. n ANS: C The atomic number of an element is symbolized by the letter Z. DIF: Moderate REF: p. 34 OBJ: Identify symbol for the atomic number of an element. 19. Aluminum has an atomic number of 13. How many protons does it have? a. 13 b. 26 c. 27 d. None of the above ANS: A The atomic number equals the number of protons in an atom. DIF: Moderate REF: p. 34 OBJ: Identify the number of protons on an atom based on its atomic number. 20. Two identical atoms which e N xist R at d I iffe G rent B e . ne C rgy M states are called . a. isotopes b. isomers c. isotones d. isobars ANS: B Two identical atoms which exist at different energy states are called isomers. DIF: Moderate REF: p. 36 OBJ: Define an isomer. 21. The atomic number of molybdenum is 42 and the atomic mass number is 98. How many neutrons does it have? a. 42 b. 98 c. 21 d. 56 ANS: D The number of neutrons is equal to A–Z. DIF: Difficult REF: p. 36 OBJ: Identify the number of neutrons in an atom based on its atomic number and atomic mass number. 22. A chemical compound is any quantity of . Radiologic Science for Technologists 11th Edition Bushong Test Bank The only difference between x-rays and gamma rays is their origin. a. one type of atom b. one type of molecule c. two types of molecules d. two or more types of atoms ANS: B A chemical compound is any quantity of one type of molecule. DIF: Difficult REF: p. 36 OBJ: Describe a compound. 23. During beta emission, an atom releases . a. electrons b. positrons c. protons d. neutrons ANS: A During beta emission, an atom releases electrons. DIF: Moderate REF: p. 37 OBJ: Describe beta emission. 24. The only difference between x-rays and gamma rays is their . a. energy b. size c. origin d. name ANS: C USNT.O DIF: Moderate REF: p. 42 OBJ: Explain the difference between x-rays and gamma rays. 25. The is the least penetrating form of ionizing radiation. a. beta particle b. x-ray c. gamma ray d. alpha particle ANS: D The alpha particle is the least penetrating form of ionizing radiation. DIF: Moderate REF: p. 41 OBJ: Name the least penetrating form of ionizing radiation.