About This Chapter
Atoms and Moles - Chapter Summary
The lessons in this chapter flesh out various terms and concepts integral to the scientific study of atoms and moles. You will be given the opportunity to review the Bohr model, atomic mass, isotopes, and Avogadro's number. Additionally, these lessons have topics including all of the following:
- The atomic spectra and nucleus
- The electron shell and its configurations
- The atomic and mass number
- Forms of radioactive decay and their effect on the nucleus
- The calculation of radioactive decay and interpretation of decay graphs
- Fusion, fission, carbon dating, tracers and imaging
- Defining molar mass
While this may seem like a lot of material, staying organized will be easy with the dashboard feature, which gives you a place to view all of your recent studying activity and keep track of your progress through the lessons. While there, you'll also have the chance to explore links to practice quizzes and additional courses relevant to your learning. You may also ask questions of our subject experts if you find yourself stuck at any given point.
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.
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.
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?
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. Types of Radioactive Decay and Their Effect on the Nucleus
What is meant by the term 'radioactive'? In this lesson we will break down the three main types of nuclear decay particles and discuss their composition, their effect on the nucleus, and their applications.
10. Half-life: Calculating Radioactive Decay and Interpreting Decay Graphs
What causes a radioactive particle to decay? We'll never really know, but our best guess lies in probability. In this lesson, we are going to focus on the half-life, a way of measuring the probability that a particle will react.
11. Fusion, Fission, Carbon Dating, Tracers & Imaging: Applications of Nuclear Chemistry
What can the sun do that we can't? How do carbon atoms 'date'? Are radioactive isotopes helpful in the medical field? The answers to these questions can be found in this lesson on the applications of nuclear chemistry.
12. Avogadro's Number: Using the Mole to Count Atoms
How do we move from the atomic world to the regular world? Because atoms are so tiny, how can we count and measure them? And what do chemists celebrate at 6:02 AM on October 23rd each year? In this lesson, you will be learning how Avogadro's number and the mole can answer these questions.
13. What is Molar Mass? - Definition, Formula & Examples
Compounds have mass, and this is what we call the molar mass. In this lesson, we will discuss the molar mass and go over examples on how to calculate it.
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Other chapters within the GACE Science (524): Practice & Study Guide course
- Basics of Scientific Inquiry
- Historical Developments in Science
- Scientific Data Collection & Manipulation
- Data & Statistics
- Energy Resources
- Science & Technology in Daily Life
- Science & Public Health Issues
- Organization of Matter
- Energy & Matter
- Chemical Bonding
- The Periodic Table
- Chemical Reactions
- Equilibrium & Common Chemical Reactions
- Dimensions of Motion in Physics
- Newton's Laws in Physics
- Force & Pressure
- Waves, Sound, and Light
- Cell Structure & Function
- Cell Growth & The Process of Cell Division
- Biochemistry of Life
- Evolution: Theories and Principles
- Organism Characteristics
- Introduction to Plant Biology
- Human Anatomy
- Population & The Environment
- Atmospheric Sciences
- Understanding Ecosystems
- Minerals and Rocks
- Weathering and Erosion
- Earth's Spheres and Internal Structure
- Plate Tectonics
- Geologic Time
- Water Balance
- Glaciers, Lakes, Rivers & Other Bodies of Water
- The Atmosphere of Earth
- Weather and Storms
- The Solar System: Layout, Formation & Dating
- The Earth, Sky, and Moon
- The Moon: Formation & Phases
- Origins & Theories of the Universe
- GACE Science Flashcards
- Laboratory Equipment and Procedures