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Chapter 3 Atomic Structure: Images of the Invisible

Chemistry for Changing Times, 11 th edition John W. Hill and Doris K. Kolb. Chapter 3 Atomic Structure: Images of the Invisible. James A. Noblet California State University San Bernardino, CA  2007 Prentice Hall.

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Chapter 3 Atomic Structure: Images of the Invisible

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  1. Chemistry for Changing Times, 11th edition John W. Hill and Doris K. Kolb Chapter 3Atomic Structure: Images of the Invisible James A. Noblet California State University San Bernardino, CA  2007 Prentice Hall

  2. Experiments by J.J. Thomson showed that cathode rays are composed of what elementary particles? • Protons • Electrons • Neutrons • Alpha particles 5. Positrons

  3. Experiments by J.J. Thomson showed that cathode rays are composed of what elementary particles? • Protons • Electrons • Neutrons • Alpha particles 5. Positrons

  4. A helium nucleus that is emitted during some radioactive decay processes is also called a(n): • Alpha particle • Beta particle • Gamma particle • Delta particle • Sigma particle

  5. A helium nucleus that is emitted during some radioactive decay processes is also called a(n): • Alpha particle • Beta particle • Gamma particle • Delta particle • Sigma particle

  6. Which of these electronic transitions would result in the emission of visible light (where n=energy level)? • n=5 to n=2 • n=2 to n=5 • n=3 to n=1 • n=7 to n=3 • n=4 to n=1

  7. Which of these electronic transitions would result in the emission of visible light (where n=energy level)? • n=5 to n=2 • n=2 to n=5 • n=3 to n=1 • n=7 to n=3 • n=4 to n=1

  8. Isotopes are elements that differ only in their: • Atomic number • Nuclear charge • Number of electrons in the neutral atom • Atomic mass • Chemical properties

  9. Isotopes are elements that differ only in their: • Atomic number • Nuclear charge • Number of electrons in the neutral atom • Atomic mass • Chemical properties

  10. Elements in the same group of the periodic table exhibit what tendency? • Similar chemical properties and reactivity • The same total number of electrons • Similar atomic masses • Similar appearance and physical properties • Different numbers of valence electrons

  11. Elements in the same group of the periodic table exhibit what tendency? • Similar chemical properties and reactivity • The same total number of electrons • Similar atomic masses • Similar appearance and physical properties • Different numbers of valence electrons

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