About This Chapter
Rate & Extent of Chemical Changes - Chapter Summary
In this chapter, you will learn how to calculate the rates of chemical reactions and how to analyze and interpret reaction rate graphs. In your lesson review, you will discover that the rate of a chemical reaction can be impacted by different factors. The concept of collision theory will also be introduced along with its relationship to reaction rates.
The concept of activation energy will be discussed, as well as how it affects metabolism in the body. You will receive examples of reversible chemical reactions along with definitions of the phenomenon. The chapter is completed with LeChatelier's Principle and how it relates to equilibrium. After you have reviewed the lessons in this chapter, you should be able to:
- Point out which factors impact chemical reaction rates
- Understand how two particles combine to form something new
- Place an activated complex into an activation energy diagram
- Identify examples of reverse chemical reactions
- Define LeChatelier's Principle
- Explain the factors that disrupt equilibrium
Our interesting video lessons and quizzes are developed by professional instructors to make the learning process enjoyable. After you've watched a video, take the self-assessment quiz to ensure you've understood the lesson. If you would like to review the lesson later, use the printable video transcript to make a copy you can view at any time.
1. Calculating Rates of Reaction: Formula, Graphs & Examples
In this lesson we will describe how to monitor a chemical reaction's progress, by describing the rate of chemical reaction. We will also interpret plots of chemical reactant and product amounts versus time in order to calculate the reaction rate.
2. 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.
3. 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!
4. 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.
5. Reversible Chemical Reactions: Definition & Examples
Chemical reactions don't just go forwards; sometimes, they can go backwards. Learn what a reversible chemical reaction is, and see some examples of such reactions.
6. 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.
7. Factors that Affect Chemical Equilibrium
In this lesson, you will learn how varying the conditions of concentration, temperature, and pressure will affect the reactants and products in a chemical reaction at equilibrium.
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Other chapters within the GCSE Chemistry: Practice & Study Guide course
- Steps of the Scientific Method
- Analyzing & Evaluating Scientific Data
- The Process of Scientific Thinking
- Mathematics in Science
- Scientific Vocabulary & Measurement
- Atoms & Atomic Structure
- Properties of Elements, Compounds & Mixtures
- Understanding Elements & Periodicity
- Block & Group Elements
- Chemical Bonds Overview
- Molecular Types & Structures
- States of Matter Overview
- Quantitative Chemistry
- Chemical Changes
- Energy Changes in Chemical Reactions
- Basics of Organic Chemistry
- Chemical Analysis
- Chemistry of the Atmosphere
- Using Natural Resources
- GCSE Chemistry Flashcards