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Ch 3: Holt Chemistry Chapter 3: Atoms and Moles

About This Chapter

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

How it works:

  • Identify the lessons in the Holt Chemistry: Atoms and Moles chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the atoms and moles 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:

  • The atom
  • Early atomic theory
  • Mass number and atomic number
  • Electron configurations related to atomic energy levels
  • Four quantum numbers
  • Counting atoms
  • Three laws that support the existence of atoms

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

4 Lessons in Chapter 3: Holt Chemistry Chapter 3: Atoms and Moles
Test your knowledge with a 30-question chapter practice test
Early Atomic Theory: Dalton, Thomson, Rutherford and Millikan

1. Early Atomic Theory: Dalton, Thomson, Rutherford and Millikan

Imagine firing a bullet at a piece of tissue paper and having it bounce back at you! You would probably be just as surprised as Rutherford when he discovered the nucleus. In this lesson, we are going to travel back in time and discuss some of the major discoveries in the history of the atom.

Atomic Number and Mass Number

2. Atomic Number and Mass Number

Atoms are the basic building blocks of everything around you. In order to really understand how atoms combine to form molecules, it's necessary to be familiar with their structure. In this lesson, we'll dissect atoms so we can see just what really goes into those little building blocks of matter.

Electron Configurations in Atomic Energy Levels

3. Electron Configurations in Atomic Energy Levels

This lesson will explain what the electrons are doing inside the atom. Tune in to find out how we specify where they are located and how this location description will help us predict an element's properties.

Four Quantum Numbers: Principal, Angular Momentum, Magnetic & Spin

4. Four Quantum Numbers: Principal, Angular Momentum, Magnetic & Spin

Each electron inside of an atom has its own 'address' that consists of four quantum numbers that communicate a great deal of information about that electron. In this lesson, we will be defining each quantum number and explaining how to write a set of quantum numbers for a specific electron.

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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