Ch 2: Atoms: Homework Help

About This Chapter

The Atoms chapter of this College-Level General Chemistry Homework Help course helps students complete their atoms homework and earn better grades. This homework help resource uses simple and fun videos that are about five minutes long.

How it works:

  • Identify which concepts are covered on your atoms homework.
  • Find videos on those topics within this chapter.
  • Watch fun videos, pausing and reviewing as needed.
  • Complete sample questions and get instant feedback.
  • Finish your atoms homework with ease!

Topics from your homework you'll be able to complete:

  • Atomic number and mass number
  • Early atomic theory
  • Isotopes and average atomic mass
  • Avogadro's number
  • Electron configurations in atomic energy levels
  • The Bohr model and atomic spectra

9 Lessons in Chapter 2: Atoms: Homework Help
Test your knowledge with a 30-question chapter practice test
Atomic Number and Mass Number

1. 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.

Early Atomic Theory: Dalton, Thomson, Rutherford and Millikan

2. 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.

Isotopes and Average Atomic Mass

3. 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.

Avogadro's Number: Using the Mole to Count Atoms

4. 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.

Electron Configurations in Atomic Energy Levels

5. 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

6. 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.

The Bohr Model and Atomic Spectra

7. The Bohr Model and Atomic Spectra

Do you ever wonder where light comes from or how it is produced? In this lesson, we are going to use our knowledge of the electron configurations and quantum numbers to see what goes on during the creation of light.

Niels Bohr: Biography, Atomic Theory & Discovery

8. Niels Bohr: Biography, Atomic Theory & Discovery

Niels Bohr was a Danish physicist who developed a model of the atom that we still use today to understand chemical bonding of atoms. In this lesson, learn about his life and the development of the Bohr model of the atom.

Who Was John Dalton? - Biography, Atomic Theory & Discovery

9. Who Was John Dalton? - Biography, Atomic Theory & Discovery

In this lesson, we will learn about John Dalton. We will learn about his life and how important learning and discovery was to him. We will also learn about his atomic theory and how it is important today.

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.
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