Chapter 6
More on Chemical Compounds
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6.2 Binary Covalent Nomenclature
6.5 Summary of Chemical Nomenclature
6.6 Molar Mass and Chemical Compounds
Review Skills
The presentation of information in this chapter assumes that you can already perform the tasks listed below. You can test your readiness to proceed by answering the Review Questions at the end of the chapter. This might also be a good time to read the Chapter Objectives, which precede the Review Questions.
Given an atomic mass for an element, write a conversion factor that converts between mass and moles of that element. (Section 3.6)
Given a periodic table that shows atomic masses of the elements, convert between mass of an element and moles of that element. (Section 3.6)
Given a formula for a compound, classify it as either a molecular compound or an ionic compound. (Section 5.2)
Predict charges on monatomic ions. (Section 5.3)
Write the definitions for monatomic anion, monatomic cation, and polyatomic ion. (Chapter 5 glossary)
Please excuse Lisa for being absent; she was sick and I had her shot.
A note to the teacher to explain why a child was absent
e can probably assume that the parent who wrote this note meant the child was taken to the doctor for an injection, but who knows? Like everyone else, chemists need to be careful about how they use language, and the names and formulas for chemical compounds form the core of the language of chemistry. One of the goals of this chapter is to describe how you convert between the names and chemical formulas for many chemical compounds.
Before you learn to convert between names and formulas of acids, Section 6.3 describes what acids are. Acids have many uses. For example, phosphoric acid is used to make gasoline additives and carbonated beverages. The textile industry uses oxalic acid (found in rhubarb and spinach) to bleach cloth, and glass is etched by hydrofluoric acid. Dyes and many other chemicals are made with sulfuric acid and nitric acid, and corn syrup, which is added to a variety of foods, is processed with hydrochloric acid.
The last three sections of this chapter expand on the information found in Section 3.6, which showed you how you can convert between the measurable property of mass and the number of moles of atoms in a sample of an element. Section 6.6 shows you how you can do similar calculations for compounds, and Sections 6.7 and 6.8 show ways that these calculations can be used.
