About This Chapter
ORELA Chemistry - Chemical Reactions - Chapter Summary
The video lessons in this chapter are designed to describe the most common forms of chemical reactions, and they describe each type. The steps for balancing combustion equations are explained as are solubility rules and techniques for writing net ionic equations. Learn more about the composition of binary and ternary compounds before you sit for the ORELA Chemistry examination. After studying this chapter, you might have the ability to:
- Explore several kinds of chemical reactions
- Write combustion reactions
- Identify decomposition and synthesis reactions
- Describe a precipitation reaction
- Examine chemical reaction rates and discuss how temperature affects them
- Discuss the correlation between rate law and rate constant
- Learn about the significance of the collision theory
- Explain activation energy
- Expand your knowledge of reaction mechanisms and chemical kinetics
These lessons can be studied at your own convenience while you're preparing to take the ORELA Chemistry examination. You can learn visually or listen to the narrated lessons. You'll also have the option of printing out your quiz results and worksheets and studying them offline in your spare moments. Written transcripts are included in the chapter and you can submit your questions on chemical reactions to the knowledgeable experts.
ORELA Chemistry - Chemical Reactions - Chapter Objectives
The subject of this chapter is also the name of the ORELA Chemistry examination's content domain in which you'll find corresponding test questions. The equivalent of 23% of the assessment score, the Chemical Reactions content domain will require you to analyze chemical reactions and demonstrate your in-depth knowledge of many of the steps and concepts described above. On the overall examination, you'll find 150 multiple-choice questions that must be answered in three hours and 45 minutes or less. The test will be administered by computer.
1. Common Chemical Reactions and Energy Change
This lesson covers the five common types of chemical reactions: combination, decomposition, single-replacement, double-replacement, and combustion. You will learn how to predict what kind of chemical reaction will occur. You'll also explore how matter is conserved, but energy can change.
2. Writing and Balancing Combustion Reactions
Discover what a combustion reaction is as well as what reactants are needed and what products are produced. Learn to write and balance a combustion reaction. Through the concepts of bond energies, learn how to explain why combustion reactions are largely exothermic.
3. Decomposition and Synthesis Reactions
Learn how to write, identify and predict the products of simple synthesis and decomposition reactions. This includes the composition of reactions with oxygen, of two metals, and of metals with nonmetals, as well as the decomposition of metal carbonates, metal chlorates and metal hydroxides.
4. Precipitation Reactions: Predicting Precipitates and Net Ionic Equations
Learn what a precipitate is and predict when it will form in an aqueous chemical reaction, usually a double-replacement reaction. Learn what an ionic equation is, how it differs from a net ionic equation and how to write a net ionic equation.
5. Rate of a Chemical Reaction: Modifying Factors
Why are some reactions much faster than others? Is it possible to change how fast a reaction occurs? In this lesson, you will learn what the rate of a chemical reaction is. You will also discover how factors such as temperature, concentration, surface area, and catalysts impact reaction rates.
6. Rate Constant and Rate Laws
Learn what the rate law is and how the rate constant relates to it. Learn what reaction order is and how to determine reaction order when given experimental data containing concentration and reaction rate.
7. Rate of a Chemical Reaction: Effect of Temperature
Learn how temperature affects reaction rates. Discover the rate law as well as how the Arrhenius equation relates to the rate law and predicts the effect of temperature on the rate of reaction.
8. Collision Theory: Definition & Significance
This lesson will define and explain collision theory and explore how it is related to chemical reactions and reaction rates. So if you've ever wondered how two particles combine to form a new product, read on!
9. Activation Energy and Catalysts
Learn how to define activation energy and how it relates to a reaction's energy. Learn what an activated complex is and where it fits into an activation energy diagram. Discover how a catalyst works to change the activation energy of a reaction and what this means to metabolism in the body.
10. Reaction Mechanisms and The Rate Determining Step
This lesson explores what a reaction mechanism is and how it relates to the speed of a reaction. You'll discover how to pinpoint the rate-determining step and learn how to write a rate law based on the rate-determining step.
11. Chemical Kinetics, Reaction Rate Constant & Equilibrium Constant
Are formulas, rate constants, and chemical reactions getting you down? Don't worry, this lesson will explain how reaction rate and equilibrium constants are related to chemical reactions.
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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: Atomic Structure
- ORELA Chemistry: Liquids & Solids
- ORELA Chemistry: Gases
- ORELA Chemistry: Thermodynamics
- ORELA Chemistry: Chemical Bonding
- ORELA Chemistry: Inorganic & Organic Compounds
- 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