About This Chapter
Overview of Reactions in Chemistry - Chapter Summary
This chapter on chemistry reactions takes the stress out of studying by making these topics approachable and easy to understand. Our video lessons present information about the ways in which chemical reactions form new products and examples of synthesis reaction, plus information on decomposition reactions, and single- and double-displacement reactions. You'll also discover facts about combination reaction and exothermic and endothermic reactions. This chapter is designed to assist you in achieving the following goals:
- Discuss the rate of a chemical reaction
- Outline activation energy and catalysts
- Explain changes in heat and energy diagrams
- Detail the significance of collision theory
- Differentiate between chemical and dynamic equilibrium
- Define LeChatelier's principle and its relationship to equilibrium
- Identify the equilibrium constant (K) and reaction quotient (Q)
- Explore the significance of Gibbs free energy
Even if you've struggled with these topics before, our video lessons provide a helpful way to quickly and easily understand what you're studying. These learning materials are available 24 hours a day via your devices or computer, ensuring your ability to study whenever you need to. Use the Dashboard to keep tabs on your progress through the chapter and to submit questions to an instructor.
1. How Chemical Reactions Form New Products
After watching this video, you will be able to explain what a chemical reaction is and how the products can have completely different properties to the reactants. A short quiz will follow.
2. Synthesis Reaction: Definition, Formula & Examples
Synthesis reactions, the act of combining two or more substances together to make a product, occur all around us, from the kitchen to our chemical laboratories. In this lesson, learn more about this amazing reaction, its formula, and examples.
3. Decomposition Reaction: Definition & Examples
Chemical reactions are classified into several different categories. In this lesson, you will learn about decomposition reactions so you can describe and identify them in the future.
4. Single-Displacement Reaction: Definition & Examples
There are so many chemical reactions that occur around us that we classify them into different types. In this lesson, we will discuss single-displacement reactions, one of the main types of chemical reactions.
5. Double Displacement Reaction: Definition & Examples
When a chemical reaction occurs, bonds are broken and new bonds are formed and products have a different identity from the reactants. In this lesson, we will discuss one of the main types of chemical reactions, called a double displacement reaction.
6. Combination Reaction: Definition & Examples
There many types of chemical reactions. In a combination reaction, you can predict the product if you know what goes into it. Find out more about combination reactions and see some examples.
7. Endothermic and Exothermic Reactions
Explore a chemical reaction at the molecular level. Learn about exothermic and endothermic reactions, what they look like and what happens when they occur. Understand enthalpy and how you can use it to predict whether a reaction will be exothermic or endothermic.
8. 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.
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. Changes in Heat and Energy Diagrams
Did you know that temperature and heat are not the same thing? Did you know that the temperature of water doesn't change when it boils? This lesson describes the relationship between heat and temperature. Diagrams are used to illustrate the relationship between heat and temperature during phase changes.
11. 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!
12. Equilibrium: Chemical and Dynamic
Learn the definition of chemical equilibrium and how it is dynamic. Discover what the equilibrium constant is and how it shows whether the reaction favors the reactants or products. Learn how chemists designate equilibrium in an equation and how they show the difference in reaction rate.
13. LeChatelier's Principle: Disruption and Re-Establishment of Equilibrium
Learn how Le Chatelier's Principle describes the disruption and re-establishment of equilibrium. Learn to explain the factors that disrupt equilibrium, such as concentration, temperature, and pressure. Learn how each of these factors affects a system in equilibrium.
14. Equilibrium Constant (K) and Reaction Quotient (Q)
In this lesson, we will first define and explain the notion of a chemical equilibrium. Then, you'll learn about the equilibrium constant and reaction quotient. Finally, we'll round off the lesson with a couple of examples to solidify what you've learned!
15. Gibbs Free Energy: Definition & Significance
Have you ever wondered why some things just happen spontaneously? Have you ever asked yourself why salt dissolves in water? In this lesson, you will understand the meaning of the Gibbs free energy and how it helps us predict if a chemical reaction will happen spontaneously.
Earning College Credit
Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.
To learn more, visit our Earning Credit Page
Transferring credit to the school of your choice
Not sure what college you want to attend yet? Study.com has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.
Other chapters within the CSET Science Subtest II Chemistry (218): Practice & Study Guide course
- Understanding the Structure of Matter
- Understanding the Properties of Matter
- Behaviors & Properties of Solutions
- Overview of Nuclear Processes
- Understanding Bonding in Chemistry
- Conservation of Matter & Stoichiometry
- Organic Chemistry & Biochemistry
- Energy Conservation & Transfer
- Radiation, Radioactivity & Nuclear Energy
- Electric Power Generation
- CSET Science Subtest 2 Chemistry Flashcards