KEY-FinalExamStudyGuide_Fall2013

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Leaming-Focused® Notebook ©2005 Learning Concepts Student Learning Map Unit Topic: How do electrons behave in an atom? Key Learning: A. Electron Configurations B. Electromagnetic Spectrum Unit Essential Questions: A. How is electronic structure (e - ) described in an atom? B. Describe the dual wave-particle nature of electrons. Instructional Tools Atomic Emission Spectra Flame Tests Lab Hog Hotel Activity Concept: Concept: Concept: Concept: Wave-Particle Duality Electron Configurations Atomic Charge Lesson EQ: Lesson EQ: Lesson EQ: Lesson EQ: What is EMS? What is the relationship between wavelength and frequency? What is the quantum mechanical model of atomic structure? What are electron orbitals? How is the Bohr atom represented? What rules do electrons follow when filling their orbitals? How are electron configurations used to describe location of electrons? What is a cation? What is an anion? How are ions formed? Vocabulary: Vocabulary: Vocabulary: Vocabulary: Plank’s constant Bohr atom Cation Wavelength Aufbau Principle Anion Frequency Photoelectric effect Quantum numbers Pauli Exclusion Principle Hund’s Rule Valence Electrons Reproduction of this page for classroom and planning use by owner of this book is permitted.
Name ____________________________________ Date __________ Class ___________________ 5 ELECTRONS IN ATOMS SECTION 5.1 MODELS OF THE ATOM (pages 127–132) This section summarizes the development of atomic theory. It also explains the significance of quantized energies of electrons as they relate to the quan– tum mechanical model of the atom. The Development of Atomic Models (pages 127–128) 1. Complete the table about atomic models and the scientists who developed them. Scientist Dalton Thomson Rutherford Bohr The atom is a solid indivisible mass. Model of Atom The atom is a ball of positive charge with electrons stuck into the ball. Most of an atom’s mass is concentrated in the small, positively charged nucleus. The electrons surround the nucleus and the rest of the atom is empty space. Electrons are arranged in concentric circular paths around the nucleus. © Pearson Education, Inc., publishing as Pearson Prentice Hall. All rights reserved. 2. Is the following sentence true or false? The electrons in an atom can exist between energy levels. ______________________ false The Bohr Model (pages 128–129) 3. What is a small, discrete unit of energy called? It is called a quantum. 4. Circle the letter of the term that completes the sentence correctly. A quantum of energy is the amount of energy required to a. move an electron from its present energy level to the next lower one b. maintain an electron in its present energy level c. move an electron from its present energy level to the next higher one 5. In general, the higher the electron is on the energy ladder, the ______________________ farther it is from the nucleus. Chapter 5 Electrons in Atoms 43
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KEY-FinalExamStudyGuide_Fall2013

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