Ch 3: Matter, Energy, and Astronomy: Help and Review

About This Chapter

The Matter, Energy and Astronomy chapter of this Intro to Astronomy Help and Review course is the simplest way to master matter, energy and astronomy. This chapter uses simple and fun videos that are about five minutes long plus lesson quizzes and a chapter exam to ensure students learn the essentials of the topic.

Who's it for?

Anyone who needs help learning or mastering Intro to Astronomy material will benefit from taking this course. There is no faster or easier way to learn the topic. Among those who would be helped are:

  • Students who have fallen behind in understanding matter, energy and astronomy
  • Students who struggle with learning disabilities or learning differences, including autism and ADHD
  • Students who prefer multiple ways of learning science (visual or auditory)
  • Students who have missed class time and need to catch up
  • Students who need an efficient way to learn about matter, energy and astronomy
  • Students who struggle to understand their teachers
  • Students who attend schools without extra science learning resources

How it works:

  • Find videos in our course that cover what you need to learn or review.
  • Press play and watch the video lesson.
  • Refer to the video transcripts to reinforce your learning.
  • Test your understanding of each lesson with short quizzes.
  • Verify you're ready by completing the matter, energy and astronomy chapter exam.

Why it works:

  • Study Efficiently: Skip what you know, review what you don't.
  • Retain What You Learn: Engaging animations and real-life examples make topics easy to grasp.
  • Be Ready on Test Day: Use the matter, energy and astronomy chapter exam to be prepared.
  • Get Extra Support: Ask our subject-matter experts any matter, energy and astronomy question. They're here to help!
  • Study With Flexibility: Watch videos on any Web-ready device.

Students will review:

This chapter helps students review the concepts in a matter, energy and astronomy unit of a standard Intro to Astronomy course. Topics covered include:

  • The physical and chemical properties of matter
  • States of matter: solids, liquids, gasses and plasma
  • Phase change: evaporation, condensation, freezing, melting, sublimation and deposition
  • The atom
  • Atomic number and mass number
  • Elements defined
  • Properties of groups and periods in the periodic table
  • The relationships between elements, molecules and compounds
  • The Bohr model and atomic spectra
  • Atom energy levels and spectra in space
  • How energy and light interact
  • Quantum mechanics
  • Radiation, heat and astronomy

10 Lessons in Chapter 3: Matter, Energy, and Astronomy: Help and Review
Test your knowledge with a 30-question chapter practice test
Matter: Physical and Chemical Properties

1. 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

2. 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.

Phase Change: Evaporation, Condensation, Freezing, Melting, Sublimation & Deposition

3. Phase Change: Evaporation, Condensation, Freezing, Melting, Sublimation & Deposition

Substances on Earth can exist in one of four phases, but mostly, they exist in one of three: solid, liquid or gas. Learn the six changes of phase: freezing, melting, condensation, vaporization, sublimation and deposition.

The Atom

4. The Atom

Tune into this lesson to find out what matters about matter. What exactly is an atom? And, how do the atoms that make up the elements in the periodic table differ from one another?

Atomic Number and Mass Number

5. 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.

What Are Elements?

6. 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.

The Periodic Table: Properties of Groups and Periods

7. 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.

Understanding the Relationships between Elements, Molecules & Compounds

8. Understanding the Relationships between Elements, Molecules & Compounds

Everything on Earth is made of atoms, and sometimes they combine to form new groups of atoms. The sky is the limit when it comes to these combinations, which account for the vast number of things we find in our natural world.

The Bohr Model and Atomic Spectra

9. 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.

Accretion: Definition & Theory

10. Accretion: Definition & Theory

We live on an incredible planet. It's hard to believe that relatively simple processes helped shape our planet (and our entire solar system) into what it is today. In this lesson, we'll discuss one of those simple-yet-important processes: accretion.

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.
Not Taken

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