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Ch 20: Principles of Physical Science

About This Chapter

Brush up on the principles of physical science with these informative lessons. Topics include the structure of atoms, the law of conservation, energy transformation, and more.

Principles of Physical Science - Chapter Summary

This chapter makes it easy for you to reintroduce yourself to the principles of physical science and related topics like the different types of engineering. Refresh your memory of the laws of inertia and mechanisms of energy transfer, including conduction and convection. Additional subjects you'll encounter include the following:

  • Structure of atoms
  • Elemental composition of compounds and molecules
  • Classification of substances by their physical and chemical properties
  • Chemical and physical changes to matter
  • Definition and types of energy transformation
  • Principle and definition of momentum
  • Energy conservation
  • Simple machines and types of engineering

Each lesson is brief, lasting about eight minutes on average. Because the entire chapter is mobile-friendly, you can take it wherever you go. Printable worksheets provide you with the opportunity to answer questions when you're away from your mobile device or computer.

12 Lessons in Chapter 20: Principles of Physical Science
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.

How Compounds and Molecules Are Built From Elements

2. 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'll discuss how elements build molecules and compounds and how these can be classified.

Matter: Physical and Chemical Properties

3. 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

4. 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.

Energy Transformation: Definition, Types & Examples

5. Energy Transformation: Definition, Types & Examples

In this lesson, you will learn about the different kinds of energy and how these types of energy can be transformed from one form to another. You will also learn about some uses of these energy transformations in everyday life.

Mechanisms of Heat Transfer: Conduction, Convection & Radiation

6. Mechanisms of Heat Transfer: Conduction, Convection & Radiation

There are three main ways that heat is transferred between substances or objects. In this video lesson you'll learn about each one, and identify the differences between them.

Laws of Inertia: Definition & Formula

7. Laws of Inertia: Definition & Formula

Inertia is the tendency of an object to stay at rest or in motion. Learn more about Newton's first law as it explains how forces acting on an object are related to the object's mass and motion through several examples, and test your knowledge with quiz questions.

What is Momentum? - Definition, Equation, Units & Principle

8. What is Momentum? - Definition, Equation, Units & Principle

People talk about momentum all the time; now you can discover what that word really means. Then learn about the principle of conservation of momentum and what it has to do with objects colliding.

Law of Conservation of Matter: Definition & Matter

9. Law of Conservation of Matter: Definition & Matter

In this lesson, we'll learn the definition of the Law of Conservation of Mass, sometimes called the Conservation of Matter. This lesson explores the discovery of this important principle and covers a few examples of how it works.

What is Energy Conservation? - Definition, Process & Examples

10. What is Energy Conservation? - Definition, Process & Examples

This lesson will explain what the conservation of energy principle is and why it matters, using some real-life examples of how it works in our day-to-day lives. A short quiz will follow.

What Are Simple Machines? - Definition, Types & Examples

11. What Are Simple Machines? - Definition, Types & Examples

If you need to move or lift a heavy object, it would be wise to use a simple machine. Though these devices are far from fancy or high-tech, they are extremely helpful for getting work done.

What is Engineering? - Definition & Types

12. What is Engineering? - Definition & Types

Engineering has changed the world. Learn what engineering is and about the main types of engineering, and then brainstorm a few of the problems engineering might solve in the future in this lesson.

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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