About This Chapter
Atoms, Elements & Compounds Basics - Chapter Summary
Included in this chapter on atoms, elements, and compounds is a review of theories presented by Dalton, Thomson, Rutherford, and Millikan. While going through this chapter, you can also review how elements have different personalities. After completing the chapter, you should be able to:
- Discuss major discoveries in the history of the atom
- Distinguish between atoms and molecules
- Explain how elements on a periodic table are organized
- Identify common elements by their chemical symbol
- Describe how elements build molecules and compounds
- Provide details on how chemists use properties to classify matter
Our instructors assist you with quickly grasping the concepts presented. A brief quiz is available to test your understanding of each lesson, and the quizzes can be printed for use as a study tool. The quizzes link back to specific topics in the video, so if you get a question wrong you can review that topic with just one click.
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.
2. What are Atoms & Molecules? - Definition & Differences
There are lots of terms in chemistry that can be easy to mix up: atoms, molecules, compounds, mixtures, and more. In this lesson, we'll go through some of the basics of atoms and molecules, and define all of the important terms you need to know.
3. The Periodic Table: Properties of Groups and Periods
How is the periodic table like the map you used on your last road trip? In this lesson, you will be introduced to the periodic table, the road map of chemists. We will discuss how the elements are organized and how you can use this organization to identify some of their major physical properties.
4. Chemical Symbol: Definition & Examples
In this lesson, you will learn that a chemical symbol is a short-hand way to represent an element and each element on the periodic table has a unique chemical symbol. You'll become familiar with identifying some common elements by their chemical symbol.
5. How Compounds and Molecules Are Built From Elements
Did you know that elements are somewhat like people and have different personalities? Some elements like to be left alone. Others prefer to hang out with friends. We will discuss how elements build molecules and compounds and how these can be classified.
6. Matter: Physical and Chemical Properties
How are substances identified? There are two major ways we can describe a substance: physical properties and chemical properties. Learn about how chemists use properties to classify matter as either a mixture or a pure substance.
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