1. © Copyright Pearson Prentice Hall Slide 1 of 25 Ionic Bonds and Ionic Compounds In many coastal countries that have warm, relatively dry climates, salt is produced by the evaporation of seawater. You will learn how cations and anions combine to form stable compounds such as sodium chloride. 7.2

2. © Copyright Pearson Prentice Hall Ionic Bonds and Ionic Compounds > Slide 2 of 25 Formation of Ionic Compounds What is the electrical charge of an ionic compound? 7.2

3. Slide 3 of 25 © Copyright Pearson Prentice Hall Ionic Bonds and Ionic Compounds > Formation of Ionic Compounds Compounds composed of cations and anions are called ionic compounds. Although they are composed of ions, ionic compounds are electrically neutral. 7.2

4. Slide 4 of 25 © Copyright Pearson Prentice Hall Ionic Bonds and Ionic Compounds > Formation of Ionic Compounds Aluminum metal and the nonmetal bromine react to form an ionic solid, aluminum bromide. 7.2

5. Slide 5 of 25 © Copyright Pearson Prentice Hall Ionic Bonds and Ionic Compounds > Formation of Ionic Compounds Ionic Bonds The electrostatic forces that hold ions together in ionic compounds are called ionic bonds. 7.2

6. Slide 6 of 25 © Copyright Pearson Prentice Hall Ionic Bonds and Ionic Compounds > Formation of Ionic Compounds Formula Units A chemical formula shows the kinds and numbers of atoms in the smallest representative unit of a substance. A formula unit is the lowest whole-number ratio of ions in an ionic compound. 7.2

7. © Copyright Pearson Prentice Hall Slide 7 of 25 Ionic Bonds and Ionic Compounds > Formation of Ionic Compounds NaCl is the chemical formula for sodium chloride. 7.2

8. © Copyright Pearson Prentice Hall Ionic Bonds and Ionic Compounds > Slide 8 of 25 Properties of Ionic Compounds What are three properties of ionic compounds? 7.2

9. Slide 9 of 25 © Copyright Pearson Prentice Hall Ionic Bonds and Ionic Compounds > Properties of Ionic Compounds Most ionic compounds are crystalline solids at room temperature. Ionic compounds generally have high melting points. 7.2

10. Slide 10 of 25 © Copyright Pearson Prentice Hall Ionic Bonds and Ionic Compounds > Properties of Ionic Compounds Ionic compounds can conduct an electric current when melted or dissolved in water. 7.2

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