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Ch 7: Holt Chemistry Chapter 7: The Mole and Chemical Composition

About This Chapter

The Mole and Chemical Composition chapter of this Holt Chemistry Online Textbook Help course helps students learn the essential chemistry lessons of moles and chemical composition. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Mole and Chemical Composition textbook chapter.

How it works:

  • Identify the lessons in the Holt Chemistry: The Mole and Chemical Composition chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the mole and chemical composition topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Avogadro's number
  • Average atomic mass and isotopes
  • Use of atoms and ions to determine molecular formulas
  • Calculations of percent composition and determination of empirical formulas

Holt Chemistry is a registered trademark of Holt, Rinehart and Winston, which is not affiliated with Study.com.

4 Lessons in Chapter 7: Holt Chemistry Chapter 7: The Mole and Chemical Composition
Test your knowledge with a 30-question chapter practice test
Avogadro's Number: Using the Mole to Count Atoms

1. Avogadro's Number: Using the Mole to Count Atoms

How do we move from the atomic world to the regular world? Because atoms are so tiny, how can we count and measure them? And what do chemists celebrate at 6:02 AM on October 23rd each year? In this lesson, you will be learning how Avogadro's number and the mole can answer these questions.

Isotopes and Average Atomic Mass

2. Isotopes and Average Atomic Mass

When you drink a glass of water, you are actually drinking a combination of heavy water and light water. What's the difference? Is it harmful? This video will explain the difference between the two types of water and go into detail on the significance of the different isotopes of elements.

Using Atoms and Ions to Determine Molecular Formulas

3. Using Atoms and Ions to Determine Molecular Formulas

In this lesson, you will learn how atoms and ions determine molecular formulas. You will understand how molecular formulas tell information about the type and quantity of atoms involved in a molecule. Lastly, we will discuss how to write a molecular formula for an ionic compound.

Calculating Percent Composition and Determining Empirical Formulas

4. Calculating Percent Composition and Determining Empirical Formulas

Learn the difference between the empirical formula and chemical formula. Learn how to calculate the percent composition of an element in a compound. Learn how, if given a percent composition, to determine the empirical formula for a compound.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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