About This Chapter
How it Works:
- Identify which concepts are covered on your atomic structure homework.
- Find videos on those topics within this chapter.
- Watch fun videos, pausing and reviewing as needed.
- Complete sample problems and get instant feedback.
- Finish your atomic structure homework with ease!
Topics from your homework you'll be able to complete:
- Atomic and mass numbers
- Atomic structures
- Avogadro's number
- Bohr model
- de Broglie hypothesis
- Diamagnetism and paramagnetism
- Early atomic theories of Dalton, Millikan, Thomson and Rutherford
- Electron configurations
- Heisenberg principle of uncertainty
- Hund's rule
- Isotopes and average atomic mass
- Pauli exclusion and Aufbau principles
- Quantum numbers: angular momentum, magnetic, principal and spin
1. 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?
2. 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.
3. 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.
4. 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.
5. 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.
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.
7. 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.
8. Diamagnetism & Paramagnetism: Definition & Explanation
In this lesson, we learn more about electron configuration through the concepts of diamagnetism and paramagnetism. We will review electron structure in an atom, and define diamagnetism and paramagnetism.
9. Four Quantum Numbers: Principal, Angular Momentum, Magnetic & Spin
Each electron inside of an atom has its own 'address' that consists of four quantum numbers that communicate a great deal of information about that electron. In this lesson, we will be defining each quantum number and explaining how to write a set of quantum numbers for a specific electron.
10. 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.
11. Atomic Radius: Definition, Formula & Example
In this lesson, we'll learn about the atomic radius. We'll discover methods and formulas for figuring it out and learn how it's affected by different factors.
12. Heisenberg Uncertainty Principle: Definition & Equation
The Heisenberg uncertainty principle is one of the core concepts in quantum mechanics. In this lesson, we define the uncertainty principle and learn more about its implications for physical science.
13. The de Broglie Hypothesis: Definition & Significance
The de Broglie hypothesis states that particles of matter can behave as both waves and particles, just like light. In this lesson, we'll learn the basics of the de Broglie hypothesis and how it related to other theories released at the same time.
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Other chapters within the High School Chemistry: Homework Help Resource course
- Introduction to Chemistry: Homework Help
- Measurement and Problem Solving: Homework Help
- Experimental Laboratory Chemistry: Homework Help
- What Is Matter? - Homework Help
- The Periodic Table of Elements: Homework Help
- The Representative Elements of the Periodic Table: Homework Help
- Nuclear Chemistry: Homework Help
- Bonding: Homework Help
- Phase Changes for Liquids and Solids: Homework Help
- Gases in Chemistry: Homework Help
- Solutions in Chemistry: Homework Help
- Stoichiometry and Chemical Equations: Homework Help
- Acids, Bases, and Reactions: Homework Help
- Equilibrium: Homework Help
- Chemistry Kinetics: Homework Help
- Thermodynamics in Chemistry: Homework Help
- Organic Chemistry Basics: Homework Help
- Chemistry of DNA and RNA: Homework Help
- Chemistry of DNA Replication: Homework Help