About This Chapter
WEST Chemistry: Chemical Reactions - Chapter Summary
These lesson videos are about common chemical reactions, the equations used to represent them and the factors that affect the rate of chemical reactions. Each lesson is taught by an expert instructor whose goal is to help you prepare for exam questions about:
- Writing balanced chemical reactions
- Elements of decomposition and synthesis reactions
- Net ionic equations and precipitates
- Redox, esterification, fermentation, polymerization and addition reactions
- Modifying the rate of a chemical reaction
- Rate laws and the rate constant
- Temperature and its effects
- The significance of the collision theory
- The rate-determining step
- Activation energy and catalysts of chemical reactions
- Chemical kinetics
If you feel you would benefit from an additional review of the material in this chapter, read the lesson transcripts. Seasoned instructors lead you through the video lessons, which feature animation, graphics and entertaining narration. Questions can be submitted to the experts for assistance.
WEST Chemistry: Chemical Reactions Objectives
Before awarding future chemistry teachers with their chemistry endorsement, the state of Washington requires them to score at least a 240 on the Washington Educator Skills Test-Endorsement (WEST-E): Chemistry exam. When you take this computer-based certification exam, you will be asked to complete 110 multiple-choice questions during a two-hour and 30-minute testing session. Twenty-six percent of these questions will be about chemical reactions.
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. Organic Chemical Reactions: Addition, Substitution, Polymerization & Cracking
Organic molecules can combine, swap atoms, break apart and even make more of themselves. In this lesson, we will explore several organic reactions with examples.
6. Organic Chemical Reactions: Redox, Esterification & Fermentation
There are many different types of reactions that occur in organic chemistry. This lesson will highlight three reactions, explaining which organic molecules are the reactants and which are the products, as well as what occurs during the reaction.
7. 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.
8. 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.
9. 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.
10. 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!
11. 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.
12. 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.
13. 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 WEST Chemistry (306): Practice & Study Guide course
- WEST Chemistry: Properties of Matter
- WEST Chemistry: Atomic Structure
- WEST Chemistry: Liquids & Solids
- WEST Chemistry: Gases
- WEST Chemistry: Thermodynamics
- WEST Chemistry: Chemical Bonds
- WEST Chemistry: Inorganic & Organic Compounds
- WEST Chemistry: Understanding Equilibriums
- WEST Chemistry: Redox Reactions & Electrochemistry
- WEST Chemistry: Acids & Bases
- WEST Chemistry: Stoichiometry & Chemical Equations
- WEST Chemistry: Properties of Solutions
- WEST Chemistry: Basics of Science
- WEST Chemistry: Interdisciplinary Relationships in Science
- WEST Chemistry Flashcards