About This Chapter
MTEL Chemistry: Atomic Structure - Chapter Summary
The lessons in this chapter delve into the structure and behavior of the atom as well as the particulars of quantum theory to help you get ready for the MTEL Chemistry exam. By the end of this chapter, you will have reviewed the following in detail:
- The definition and structure of an atom
- Atomic spectra, electron configurations and the Bohr Model
- The properties of the periodic table
- The early atomic theorists
- Radioactive decay and how to calculate decay and interpret graphs
- Quantum theory
- The diagonal relationship
- Ionization energy
- Ionic and atomic radii on the periodic table
- Valence electrons
- Mass energy conversion, half life and mass defect
- Nuclear binding energy
The lessons in this chapter have been developed by educators to provide you with several methods for learning. There is a video included in each lesson for visual learning and a transcript of the video included for those who enjoy referring to text. Each lesson contains a self-assessment quiz so you can test your knowledge of the material and get an idea of how questions may look on the exam.
MTEL Chemistry: Atomic Structure Objectives
The lessons in this chapter help you to prepare for the MTEL Chemistry exam, which evaluates an educator's ability to meet the standard qualifications set by the state of Massachusetts to teach chemistry courses. The MTEL Chemistry exam is scored based on 4 content subareas. This lesson helps you review information that will be related to questions in the atomic structure and chemical bonding subarea, which account for 20% of the final score.
The MTEL Chemistry exam is computer-based and contains 100 multiple-choice questions (80% of the final score) as well as 2 questions with open responses (20% of the final score). You will have 4 hours to complete the exam, and a score of 240 or higher is required to qualify for certification.
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. 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.
3. 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.
4. 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.
5. Valence Electrons and Energy Levels of Atoms of Elements
The periodic table contains a wealth of information. This lesson will explain how to use it to quickly determine the most useful information about the most important electrons. We will be focusing our discussion on valence electrons and energy levels.
6. 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.
7. Atomic and Ionic Radii: Trends Among Groups and Periods of the Periodic Table
Atoms are VERY tiny. How do we measure their size? This lesson will explain how the size of an atom is measured and teach you how to predict the relative size of an atom based on where it is located on the periodic table.
8. Ionization Energy: Trends Among Groups and Periods of the Periodic Table
Do you know someone who has undergone radiation as a form of cancer treatment? Have you ever thought about why X-rays have health risks? Watch the video to find out what these types of radiation are really doing to atoms, define ionization energy and identify ionization trends on the periodic table.
9. Electronegativity: Trends Among Groups and Periods of the Periodic Table
How is fluorine like a child that doesn't share his or her toys? Find out in this video on electronegativity where we will discuss group and periodic trends among the elements.
10. The Diagonal Relationship, Metallic Character, and Boiling Point
What may have once seemed like a bunch of random squares with letters in them is now shaping up to be one very organized chemistry reference. In this lesson you will discover three other trends that are found on the periodic table: the diagonal relationship, trends in metallic character, and trends in boiling point.
11. Quantum Theory: Definition & Examples
After watching this lesson you will be able to explain what quantum theory is, including some key principles and scenarios, and list some applications of quantum theory. A short quiz will follow..
12. 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.
13. 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.
14. Mass-Energy Conversion, Mass Defect and Nuclear Binding Energy
When you hear the term 'nuclear power,' what comes to mind? Do you know where that energy and power is coming from? In this lesson, we are going to zoom in on the nucleus of a helium atom to explain how something as small as a nucleus can produce an extremely large amount of energy.
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Other chapters within the MTEL Chemistry (12): Practice & Study Guide course
- MTEL Chemistry: Scientific Inquiry & Research Methods
- MTEL Chemistry: Properties of Matter
- MTEL Chemistry: Liquids & Solids
- MTEL Chemistry: Gases
- MTEL Chemistry: Chemical Bonding
- MTEL Chemistry: Inorganic & Organic Compounds
- MTEL Chemistry: Chemical Reactions
- MTEL Chemistry: Stoichiometry & Chemical Equations
- MTEL Chemistry: Acids & Bases
- MTEL Chemistry: Reaction Rate
- MTEL Chemistry: Thermodynamics
- MTEL Chemistry: Equilibrium
- MTEL Chemistry: Solutions
- MTEL Chemistry Flashcards