Chapter 7- part II Ionic Compounds and Naming of Ionic compounds Resources: Class powerpoint presentation Textbook sections 7.2 and sections 9.1,9.2,9.5 (naming) Simulations – Atoms and ions http://phet.colorado.edu/en/simulations/category/chemistry/general Samples of Ionic compound and conductivity sticks Chapter 7 reading and study guide Prentice Hall review workbook – parts of Units 2 & 6 POGIL: Chemical formulas and Names of Ionic Compounds Practice problems Regents ref. Tables E, S and the Periodic Table 7.2 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. Slide 2 of 25 © Copyright Pearson Prentice Hall End Show 7.2 Ionic Bonds and Ionic Compounds Formation of Ionic Compounds > Formation of Ionic Compounds Compounds composed of cations and anions are called ionic compounds. What is the electrical charge of an ionic compound? Slide 3 of 25 © Copyright Pearson Prentice Hall End Show 7.2 Ionic Bonds and Ionic Compounds Formation of Ionic Compounds > Formation of Ionic Compounds Compounds composed of cations and anions are called ionic compounds. What is the electrical charge of an ionic compound? Although they are composed of ions, ionic compounds are electrically neutral. Slide 4 of 25 © Copyright Pearson Prentice Hall End Show 7.2 Ionic Bonds and Ionic Compounds > Formation of Ionic Compounds Aluminum metal and the nonmetal bromine react to form an ionic solid, aluminum bromide. Slide 5 of 25 © Copyright Pearson Prentice Hall End Show 7.2 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. Slide 6 of 25 © Copyright Pearson Prentice Hall End Show 7.2 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. Slide 7 of 25 © Copyright Pearson Prentice Hall End Show 7.2 Ionic Bonds and Ionic Compounds > Formation of Ionic Compounds NaCl is the chemical formula for sodium chloride. Slide 8 of 25 © Copyright Pearson Prentice Hall End Show Conceptual Problem 7.2 Slide 9 of 25 © Copyright Pearson Prentice Hall End Show Conceptual Problem 7.2 Slide 10 of 25 © Copyright Pearson Prentice Hall End Show Conceptual Problem 7.2 Slide 11 of 25 © Copyright Pearson Prentice Hall End Show Conceptual Problem 7.2 Slide 12 of 25 © Copyright Pearson Prentice Hall End Show Practice Problems for Conceptual Problem 7.2 Slide 13 of 25 © Copyright Pearson Prentice Hall End Show 7.2 Ionic Bonds and Ionic Compounds > Properties of Ionic Compounds Properties of Ionic Compounds What are three properties of ionic compounds? Slide 14 of 25 © Copyright Pearson Prentice Hall End Show 7.2 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. Slide 15 of 25 © Copyright Pearson Prentice Hall End Show 7.2 Ionic Bonds and Ionic Compounds > Properties of Ionic Compounds The orderly arrangement of component ions produces the beauty of crystalline solids. Slide 16 of 25 © Copyright Pearson Prentice Hall End Show 7.2 Ionic Bonds and Ionic Compounds > Properties of Ionic Compounds Ionic compounds can conduct an electric current when melted or dissolved in water. Slide 17 of 25 © Copyright Pearson Prentice Hall End Show