Chapter 4 Introduction

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When heated, different metal atoms produce flames of different colors. That is what causes the many brilliant colors of a fireworks display.
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CHAPTER 4

Moving Electrons

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In this chapter, you will study

  • the systematic arrangement of electrons in an atom

  • how ionic compounds are formed

  • valence electrons and ionic bonding

  • how the periodic table reflects electron arrangement

While the nucleus of an atom can be difficult to change, the electrons are a different story. Electrons can be moved around within an atom or transferred between atoms. When atoms transfer electrons, they become ions with positive and negative charges, and form ionic compounds. Knowing the arrangement of electrons within an atom can help you to predict which ionic compounds will form.