Ch 4: MEGA General Science: Properties of Matter

About This Chapter

This chapter is comprised of a series of lessons designed to prepare you for the Missouri Educator Gateway Assessments (MEGA) General Science test. These lessons are on the properties of matter.

MEGA General Science: Properties of Matter - Chapter Summary

These short lessons are to be used as a refresher on the properties of matter in advance of your taking the MEGA General Science test. They will help you answer questions that could be on the test about such things as:

  • The structure of an atom
  • An examination of atomic structures in relation to the Pauli Exclusion Principle, the Aufbau Principle and Hund's Rule
  • A look at Quantum Theory
  • A discussion of Lewis Dot Structures
  • Atomic energy levels and electron configurations
  • The definition of an element
  • A description of a chemical compound
  • The makeup of a heterogeneous mixture
  • The difference between acids and bases
  • How to use the periodic table
  • The physical and chemical properties of matter
  • An understanding of states of matter and comparing chemical versus physical changes to matter
  • A view into the properties of solids and liquids, and kinetic molecular theory
  • The uses and benefits of radioactive materials

Our subject matter experts make the material interesting and will test your understanding of the material with a quiz after each lesson. If your quiz results indicate a need to re-look at any of the lesson, you can either make use of the transcript or use the handy, keyword-based timeline tool for finding the right part of the video to watch again. You can also take advantage of the feature we provide for you to pose a question directly to our experts.

15 Lessons in Chapter 4: MEGA General Science: Properties of Matter
Test your knowledge with a 30-question chapter practice test
What Are Atoms? - Definition & Structure

1. What Are Atoms? - Definition & Structure

An atom is the basic building block of all matter. Everything in existence is made up of atoms. Learn more about the atom, its history and structure, then test your knowledge with quiz questions.

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.

Atomic Structures: Pauli Exclusion Principle, Aufbau Principle & Hund's Rule

3. Atomic Structures: Pauli Exclusion Principle, Aufbau Principle & Hund's Rule

This lesson discusses the three main rules that govern how electrons fit in the atomic structure by filling the shells, subshells, and orbitals. We will also review the basics of quantum numbers before learning these principles.

Quantum Theory: Definition & Examples

4. Quantum Theory: Definition & Examples

After watching this lesson you will be able to explain what quantum theory is, including some key principles and scenarios, and list some applications of quantum theory. A short quiz will follow..

Lewis Dot Structures: Resonance

5. Lewis Dot Structures: Resonance

In this lesson, we'll review Lewis dot structures and how to draw them. Then, learn about resonance and resonance structures for molecules and polyatomic ions. Afterwards, assess your new knowledge with a quiz.

Electron Configurations in Atomic Energy Levels

6. 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.

What Are Elements?

7. 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 Chemical Compound? - Definition & Examples

8. What Is a Chemical Compound? - Definition & Examples

Very few single chemical elements are encountered in everyday life. In this lesson, you will learn about chemical compounds through some examples to gain a better understanding of what they are and how they form.

Heterogeneous Mixture: Definition & Examples

9. Heterogeneous Mixture: Definition & Examples

You come into contact with mixtures every day. Most of the foods we eat and drink are some form of mixtures. In this lesson, you will learn about heterogeneous mixtures and the types of heterogeneous mixtures recognized by scientists.

Acids and Bases

10. Acids and Bases

Have you ever wondered how we measure the acidity of liquids? Check out this lesson to see how acids and bases are measured on a pH scale and how they relate to neutral solutions, such as water.

The Periodic Table: Properties of Groups and Periods

11. 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.

Matter: Physical and Chemical Properties

12. 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 and Chemical Versus Physical Changes to Matter

13. 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.

The Kinetic Molecular Theory: Properties of Solids and Liquids

14. The Kinetic Molecular Theory: Properties of Solids and Liquids

This lesson explores the kinetic molecular theory and how it pertains to the properties of solids and liquids. You'll learn the properties of solids and liquids, discover the types of intermolecular attractions that occur between them and gain an understanding how phase changes happen.

What Are Radioactive Materials? - Definition, Examples, Uses & Benefits

15. What Are Radioactive Materials? - Definition, Examples, Uses & Benefits

Radioactive materials are all around us. Some are beneficial, while others may cause us harm. In this lesson you'll learn what radioactive materials are and explore where they come from and how they can be useful to us.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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