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Ch 6: Basic Atomic Structure - ORELA Middle Grades General Science

About This Chapter

Refresh your knowledge of the principles of basic atomic structure with the lively lessons in this chapter. Use our study aids to prepare for ORELA Middle Grades General Science exam questions on related topics.

ORELA Middle Grades General Science: Basic Atomic Structure - Chapter Summary

In this chapter, you can review information on the makeup of an atom and see how the atom's structure influences its properties. Our instructors have put together useful information that can help you answer ORELA Middle Grades General Science exam questions on topics such as:

  • Protons, neutrons and electrons
  • The nucleus of an atom
  • Atomic number
  • Atomic mass
  • Niels Bohr's work
  • Types of isotopes
  • Electrons and atomic energy

As you refresh your understanding of what atoms are really made of, you can assess your knowledge with our short multiple-choice lesson quizzes. These quizzes, and the more comprehensive chapter exam, make it easy to see where you need extra review prior to exam day.

10 Lessons in Chapter 6: Basic Atomic Structure - ORELA Middle Grades General Science
Test your knowledge with a 30-question chapter practice test
The Bohr Model and Atomic Spectra

1. 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.

Atomic Nucleus: Definition, Structure & Size

2. Atomic Nucleus: Definition, Structure & Size

The atomic nucleus is the central part of the atom. There is a lot to be told by the structure of the atomic nucleus. This lesson goes through the structure of the atomic nucleus and other factors that the atomic nucleus tells us.

The Electron Shell

3. The Electron Shell

You may be familiar with the role of electrons in electrical devices, but did you know that electrons also determine the chemical reactivity of everything around you?

Protons: Definition, Charge & Mass

4. Protons: Definition, Charge & Mass

Protons can be found in the nucleus of every atom. While originally it had been thought that protons were a fundamental particle, recent research has shown that protons are made of quarks. This lesson will cover the properties of the proton.

Neutrons: Definition & Concept

5. Neutrons: Definition & Concept

Neutrons are the big guys of the atom. This lesson explains the structure of the neutron, its properties, and some of its influences on the function of the atom.

Atomic Number and Mass Number

6. 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 is Atomic Mass? - Definition & Examples

7. What is Atomic Mass? - Definition & Examples

Atomic mass is a characteristic of an atom that is a measure of its size. It is plays a major role in the chemical properties of elements. This article discusses atomic mass and how it is calculated.

What Are Isotopes? - Definition, Types & Examples

8. What Are Isotopes? - Definition, Types & Examples

Not all atoms of an element are identical - atoms of the same element can have different numbers of neutrons. These different versions of the same element are called isotopes. In this lesson, we will discuss the examples and types of isotopes.

Isotopes and Average Atomic Mass

9. Isotopes and Average Atomic Mass

When you drink a glass of water, you are actually drinking a combination of heavy water and light water. What's the difference? Is it harmful? This video will explain the difference between the two types of water and go into detail on the significance of the different isotopes of elements.

Electron Configurations in Atomic Energy Levels

10. 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.

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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Other Chapters

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