Chapter 5 and 6

Chapter 5 and 6

by Luis Bello

Chapter 5- Molecules and Compounds

Previous Chapter 4

4.2 Indivisible: The Atomic Theory 

4.3 The Nuclear Atom 

4.4 The Properties of Protons, Neutrons, and Electrons 

4.5 Elements: Defined by Their Numbers of Protons 

4.6 Looking for Patterns: The Periodic Law and the Periodic Table 

4.7 Ions: Losing and Gaining Electrons 

4.8 Isotopes: When the Number of Neutrons Varies 

4.9 Atomic Mass: The Average Mass of an Element’s Atoms 

Multiple Choice

How many protons are in a sodium atom (Na)?

• Sodium has 16 protons.

• Sodium has 12 protons.

• Sodium has 11 protons

• Sodium has 22 protons

Multiple Choice

What is the mass number of this atom?

• 1

• 3

• 4

• 7

Chapters 5 and 6​

​Presenter

​Dr. Luis Bello

​[e-mail]

Brief description

Chapter 5 introduces predicting and writing chemical formulas. You will also learn how to derive the name of a molecule from the formula and the type of species. The naming of ionic compounds, molecular compounds, and acids will be explained

Chapter topics

5.2 Compounds Display Constant Composition  

5.3 Chemical Formulas: How to Represent Compounds  

5.4 A Molecular View of Elements and Compounds  

5.5 Writing Formulas for Ionic Compounds  

5.6 Nomenclature: Naming Compounds  

5.7 Naming Ionic Compounds  

5.8 Naming Molecular Compounds  

5.9 Naming Acids  

5.10 Nomenclature Summary  

5.11 Formula Mass: The Mass of a Molecule or Formula Unit  

Compounds Display Constant Composition  

The law of constant composition says that, in any particular chemical compound, all samples of that compound will be made up of the same elements in the same proportion or ratio. For example, any water molecule is always made up of two hydrogen atoms and one oxygen atom in a 2:1 ratio.

Chemical Formulas: How to Represent Compounds  

Writing Formulas for Ionic Compounds  

Naming Ionic Compounds  

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Naming Molecular Compounds  

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Naming Acids  

Naming Bases

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Formula Mass: The Mass of a Molecule or Formula Unit 

Chapter 6- Chemical Composition

Topics

• 6.3 Counting Atoms by the Gram  

  6.4 Counting Molecules by the Gram  

  6.5 Chemical Formulas as Conversion Factors  

  6.6 Mass Percent Composition of Compounds  

  6.7 Mass Percent Composition from a Chemical Formula  

  6.8 Calculating Empirical Formulas for Compounds  

  6.9 Calculating Molecular Formulas for Compounds  

Mass Percent Composition of Compounds 

Calculating Empirical Formulas for Compounds  

Example