About This Chapter
ORELA Chemistry - Atomic Structure - Chapter Summary
This chapter's information about atomic structure can serve to reinforce your previous knowledge of the topic. Watch the video lessons to learn more about atoms and their composition. Study the elements, the periodic table, trends in metallic character and the diagonal relationship as you get ready to sit for the ORELA Chemistry examination. When you finish your review, take the short quizzes that gauge your retention. Upon completion, you could be able to:
- Identify the characteristics of the atom's protons, neutrons and electrons
- Discuss early atomic theory
- Examine the patterns and functions of electrons
- Understand the Bohr model as well as the effects of valence electrons on atomic properties
- Describe the elements of the periodic table
- Teach topics such as atomic radii, ionization energy, electronegativity and the diagonal relationship
Review these and other subjects so that you can do well when answering the ORELA Chemistry examination's related questions. Usually five to ten minutes long, the lessons are offered online for your convenience. Simply click to play, pause or rewind. The timeline feature contains the main topics of the videos, so you can quickly move among them. Text transcripts accompany each of the videos, and many of them contain bold terms that you could learn more about. You may also ask questions of the experts and take the lessons' multiple-choice quizzes.
ORELA Chemistry - Atomic Structure Objectives
The equivalent of approximately 18% of the test score, the Matter and Atomic Structure content domain of the ORELA Chemistry examination is where you'll find questions that reflect the information provided in this chapter. Demonstrate your understanding of the periodic table, atomic spectra and the relationships between protons, neutrons and electrons as well as other topics.
There are five content domains on the computer-based examination, which includes 150 multiple-choice questions. Test candidates are given three hours and 45 minutes to answer all of the questions and possibly qualify for a teaching endorsement in chemistry.
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.
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Other chapters within the ORELA Chemistry: Practice & Study Guide course
- ORELA Chemistry: Scientific Research & Equipment
- ORELA Chemistry: Interdisciplinary Relationships in Science
- ORELA Chemistry: Properties of Matter
- ORELA Chemistry: Liquids & Solids
- ORELA Chemistry: Gases
- ORELA Chemistry: Thermodynamics
- ORELA Chemistry: Chemical Bonding
- ORELA Chemistry: Inorganic & Organic Compounds
- ORELA Chemistry: Chemical Reactions
- ORELA Chemistry: Equilibrium
- ORELA Chemistry: Acids & Bases
- ORELA Chemistry: Redox Reactions & Electrochemistry
- ORELA Chemistry: Stoichiometry & Chemical Equations
- ORELA Chemistry: Solutions in Chemistry
- ORELA Chemistry Flashcards