Ch 12: ORELA General Science: Types of Chemical Reactions

About This Chapter

Our video lessons in this chapter on chemical reactions are a great way to get yourself ready for these types of questions on the ORELA General Science test.

ORELA General Science: Types of Chemical Reactions - Chapter Summary

We take pride in our subject matter experts who have put together highly effective video lessons to help you review the types of chemical reactions you might encounter on the ORELA General Science test. The videos are made intentionally fun and engaging. Be careful, you might actually enjoy your study time! Our instructors topics such as:

  • Polarity and ionic character of covalent bonds
  • VSEPR Theory
  • Strong and weak intermolecular forces (dipole, dispersion, Van Der Waal's forces)
  • Predicting molecular shapes using orbital hybridization and valence bond theory
  • Molecular orbital theory
  • Metallic bonding & the electron-sea model
  • Intramolecular bonding in organic and inorganic macromolecules
  • Organic molecules - types and functional groups
  • Definition, use and benefits of radioactive materials

Each lesson is followed by a short quiz that helps you gauge how well you're grasping the material. If you need to go back over any videos, you can easily do that using the provided links in your quiz results or the timeline tool.

ORELA General Science: Types of Chemical Reactions - Chapter Objectives

The NES General Science test is comprised of four main sections. There will be a total of 150 questions that you'll have three hours to complete. The largest section, Physical Science, constitutes 37% of the exam and is where you're likely to find questions about chemical reactions. The test aims to evaluate your understanding of chemical bonds, chemical reaction types and stoichiometry.

Specifically, you may encounter questions that require you to demonstrate your knowledge of chemical formulas and different types of chemical bonds and intermolecular forces and to analyze various types of chemical reactions (e.g. acid-base, redox, etc), in terms of reactant and product properties, and the factors that influence them. Our instructors strive to align their lesson topics with these exam objectives so you can be sure you're preparation is efficient and relevant.

11 Lessons in Chapter 12: ORELA General Science: Types of Chemical Reactions
Test your knowledge with a 30-question chapter practice test
Covalent Bonds: Predicting Bond Polarity and Ionic Character

1. Covalent Bonds: Predicting Bond Polarity and Ionic Character

Learn about covalent bonds and their two types: nonpolar covalent bonds and polar covalent bonds. Discover how to predict the type of bond that will form based on the periodic table. Learn what ionic character means and how to determine it.

VSEPR Theory & Molecule Shapes

2. VSEPR Theory & Molecule Shapes

In this lesson, you'll learn about the VSEPR theory and how it can be used to explain molecule shapes. Then, learn how to predict the shape of a molecule by applying the VSEPR theory to the Lewis dot structure.

Hydrogen Bonding, Dipole-Dipole & Ion-Dipole Forces: Strong Intermolecular Forces

3. Hydrogen Bonding, Dipole-Dipole & Ion-Dipole Forces: Strong Intermolecular Forces

Learn about intermolecular vs. intramolecular forces. Learn the different intermolecular bonds (including hydrogen bonding and dipole-dipole and ion-dipole forces), their strengths, and their effects on properties, such as boiling and melting points, solubility, and evaporation.

London Dispersion Forces (Van Der Waals Forces): Weak Intermolecular Forces

4. London Dispersion Forces (Van Der Waals Forces): Weak Intermolecular Forces

Learn how London dispersion forces are created and what effect they have on properties such as boiling and melting points. Discover this weak intermolecular force and how it is one of the Van der Waals forces.

Using Orbital Hybridization and Valence Bond Theory to Predict Molecular Shape

5. Using Orbital Hybridization and Valence Bond Theory to Predict Molecular Shape

You'll learn how to explain how shapes of molecules can be predicted using valence bond theory and hybridization. When finished, you'll understand the difference between sigma and pi bonds and how the VSEPR theory, along with the hybridization theory, helps predict the shape of a molecule.

Molecular Orbital Theory: Tutorial and Diagrams

6. Molecular Orbital Theory: Tutorial and Diagrams

Learn how to sketch the overlap of orbitals to form sigma and pi bonds. Use the molecular orbital theory to determine bond order. Discover how bond order affects bond strength and bond energy.

Metallic Bonding: The Electron-Sea Model & Why Metals Are Good Electrical Conductors

7. Metallic Bonding: The Electron-Sea Model & Why Metals Are Good Electrical Conductors

Learn why metallic bonding is called the electron sea model. Discover why metals bond the way they do and why they are shiny, malleable and conduct electricity well.

Intramolecular Bonding and Identification of Organic and Inorganic Macromolecules

8. Intramolecular Bonding and Identification of Organic and Inorganic Macromolecules

Understand what a macromolecule is and be able to identify both organic and inorganic macromolecules. Organic molecules include proteins, lipids, carbohydrates and nucleic acids.

Organic Molecules: Alkanes, Alkenes, Aromatic Hydrocarbons and Isomers

9. Organic Molecules: Alkanes, Alkenes, Aromatic Hydrocarbons and Isomers

Learn more about carbon and hydrogen and see how these atoms come together to form distinct molecules. Also, study the difference between saturated and unsaturated molecules.

Functional Groups in Organic Molecules

10. Functional Groups in Organic Molecules

Learn what an organic compound is and how their functional groups affect them. Identify the different types of functional groups including alcohols, alkyl halides, ketones, aldehydes, ethers, carboxylic acids and esters.

What Are Radioactive Materials? - Definition, Examples, Uses & Benefits

11. What Are Radioactive Materials? - Definition, Examples, Uses & Benefits

Radioactive materials are all around us. Some are beneficial, while others may cause us harm. In this lesson you'll learn what radioactive materials are and explore where they come from and how they can be useful to us.

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 within the ORELA General Science: Practice & Study Guide course

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