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X Chapter 4 Test Review

X Chapter 4 Test Review. The Atomic Theory. The smallest particle that still retains the property of an element is called what? A. neutron B. atom C. electron D. molecule. In the Schrödinger model, what is the name for where an electron is found 90% of the time? Energy level Isotope

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X Chapter 4 Test Review

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  1. X Chapter 4 Test Review The Atomic Theory

  2. The smallest particle that still retains the property of an element is called what?A. neutronB. atomC. electronD. molecule

  3. In the Schrödinger model, what is the name for where an electron is found 90% of the time? • Energy level • Isotope • Ground state • Orbital

  4. The higher energy level for an electron is called what in the Bohr model?A. ground stateB. orbitalC. excited stateD. energy level

  5. What must be equal in a neutral atom? • Neutrons and protons • Electrons and neutrons • Protons and electrons

  6. Atoms with a charge are called what? • Ions • Cations • Anions • Isotopes

  7. Z A X In the isotope notation shown below, what does the Z and A stand for? • Z = atomic symbol, A = atomic # • Z = mass #, A = atomic # • Z = mass #, A = atomic symbol • Z = atomic #, A = mass #

  8. Who discovered the electron? • JJ Thomson • Robert Millikan • Ernest Rutherford • James Chadwick

  9. Who discovered the nucleus? • JJ Thomson • Robert Millikan • Ernest Rutherford • James Chadwick

  10. What is the mass number if an atom has 14 neutrons, 15 protons, and 16 electrons? • 45 • 31 • 30 • 29

  11. 8035Br How many protons, neutrons, and electrons are in the following sample? • p+ = 35, n = 45, e- = 80 • p+ = 35, n = 80, e- = 35 • p+ = 45, n = 35, e- = 45 • p+ = 35, n = 45, e- = 35

  12. 5927Co2+ How many protons, neutrons, and electrons are in the following sample? • p+ = 27, n = 32, e- = 27 • p+ = 32, n = 27, e- = 32 • p+ = 27, n = 32, e- = 25 • p+ = 27, n = 59, e- = 25

  13. What is the isotope notation for phosphorous-31? • 3115P • 1531P • 4615P • 3015P

  14. What is Rutherford’s famous experiment in which he discovered the nucleus? • Oil drop experiment • Cathode ray tube experiments • Gold-foil experiment • Plum pudding experiment

  15. Who is credited with the plum pudding model of the atom? • JJ Thomson • Robert Millikan • Ernest Rutherford • James Chadwick

  16. Who discovered the neutron? • JJ Thomson • Robert Millikan • Ernest Rutherford • James Chadwick

  17. What is the atomic number equal to? • The # of electrons in the atom • Sum of protons & neutrons in the atom • The mass number • The # of protons in the nucleus

  18. What is the mass number equal to? • The # of protons in the nucleus • The sum of the protons & neutrons in the nucleus • The # of electrons in the atom • The charge on an ion

  19. Which of the following are found in the nucleus of an atom? • protons • neutrons • electrons • More than one of the above • None of the above

  20. Which of the following pairs below are isotopes? • Carbon-12 and Carbon-13 • Uranium-238 and Neptunium-238 • Chlorine-35 and Fluorine-19

  21. What is the atomic mass on the periodic table equal to? • The weighted average of the masses of all naturally occurring isotopes • The sum of the protons & neutrons in the nucleus • The number of protons in the nucleus

  22. Schrodinger is credited with which model of the atom? • The plum pudding model • The billiard ball model • The quantum mechanical model • The Bohr model

  23. How many protons are in the nucleus of a nitrogen atom? • 14 protons • 21 protons • 7 protons • 8 protons

  24. How many neutrons are in the nucleus of a Iodine-127 atom? • 53 neutrons • 127 neutrons • 180 neutrons • 74 neutrons

  25. What does the 34 represent in sulfur-34? • Atomic number • Mass number • Atomic mass • Electrons in the atom

  26. If an iron ion has a charge of +2, how many electrons does the ion have? • 24 electrons • 26 electrons • 28 electrons

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