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Ch 2: Structure of Matter

About This Chapter

Watch online video lessons to learn about the structure of matter, including the unique configurations of atoms, elements and compounds. Each lesson is accompanied by a short multiple-choice quiz you can use to check your understanding of these ftopics.

Structure of Matter - Chapter Summary and Learning Objectives

Matter is a broad scientific term that refers to the physical objects and substances found around and within us. At the beginning of the chapter, you'll be introduced to the atom, the most fundamental form of matter, and learn how to define its subatomic particles in terms of charge and mass. The instructor will also discuss elements, or more complex arrangements of atoms, and how elements can organize to form compounds and molecules.

Using easy-to-understand visuals, the instructor will show you how matter, such as the chemical compound water, can exist in different states, like a liquid or solid. You'll also find out how to decipher the periodic table, an important scientific tool that can be used to understand the physical properties of elements. At the end of the chapter, you should be able to:

  • Define and use basic scientific terms, such as atom, compound and element
  • Identify the four states of matter
  • Understand the chemical and physical changes that affect matter
  • Understand the relationships between elements as shown on the periodic table

VideoObjective
The AtomDefine the basic unit of matter.
What is a Compound?Describe the nature of a chemical compound.
What Are Elements?Provide a definition of a chemical element.
How Compounds and Molecules are Built from ElementsDiscuss how chemical compounds and molecules are formed.
How Atoms and Molecules Form SolidsUnderstand how atoms and molecules form solids by building up and repeating patterns, such as the crystal structure of NaCl or long-chain polymers.
Matter: Physical and Chemical PropertiesDescribe the physical and chemical properties found in matter.
States of Matter: Solids, Liquids, Gases and Plasma Identify the different states of matter, including solids, liquids, gases and plasma.
States of Matter and Chemical Versus Physical Changes to MatterCompare and contrast chemical and physical changes to matter.
The Periodic Table: Properties of Groups and Periods Understand the organizational structure of the periodic table.

8 Lessons in Chapter 2: Structure of Matter
What is An Atom? - Definition & Examples

1. What is An Atom? - Definition & Examples

After watching this video, you will be able to explain what an atom is, how it is structured, what they are made from, and give some examples of elements. A short quiz will follow.

What Are Elements?

2. What Are Elements?

Look around you. What do you see? Elements are everywhere. They are the building blocks of all matter on Earth. In this lesson, we will discuss what an element is, how elements are written as symbols, and how elements are the building blocks of all matter.

What Is a Compound? - Combining Elements with Chemical Bonds

3. What Is a Compound? - Combining Elements with Chemical Bonds

After watching this video, you will be able to explain what a compound is, identify compounds versus regular molecules, and describe the two types of bonding that form compounds. A short quiz will follow.

How Compounds and Molecules Are Built From Elements

4. How Compounds and Molecules Are Built From Elements

Did you know that elements are like people and have different personalities? A few elements are very shy and love to be left alone. Others are very social and prefer to hang out with friends. In this lesson we will discuss how elements build molecules and compounds.

How Atoms & Molecules Form Solids: Patterns & Crystals

5. How Atoms & Molecules Form Solids: Patterns & Crystals

After watching this video, you will be able to explain how atoms and molecules form solids, whether in the form of random mixtures or crystal patterns. A short quiz will follow.

Matter: Physical and Chemical Properties

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.

States of Matter: Solids, Liquids, Gases, & Plasma

7. States of Matter: Solids, Liquids, Gases, & Plasma

Learn the four states of matter in the universe: solid, liquid, gas and plasma. Learn about the differences in shape and volume among the four states, which of the states is the most common and why plasma conducts electricity.

States of Matter and Chemical Versus Physical Changes to Matter

8. States of Matter and Chemical Versus Physical Changes to Matter

The world around us is constantly changing. Chemists put those changes into two main categories: physical changes and chemical changes. This lesson will define and provide examples of each.

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