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Ch 18: Rates of Reaction - ORELA Middle Grades General Science

About This Chapter

Use the video lessons and quizzes in this chapter to review rates of reaction. These resources will make sure you are fully prepared when it comes time to take the ORELA Middle Grades General Science test.

ORELA Middle Grades General Science: Rates of Reaction - Chapter Summary

In this chapter, you'll get up to speed on how to calculate rates of reaction for the ORELA Middle Grades General Science exam. Topics covered include:

  • Factors that impact chemical reaction rates
  • Rate laws and rate constant
  • How temperature impacts chemical reactions
  • Exothermic and endothermic reactions
  • Limiting reactants
  • How to calculate excess reactants, reaction yield and percentage yield
  • Empirical formulas for percent composition

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7 Lessons in Chapter 18: Rates of Reaction - ORELA Middle Grades General Science
Test your knowledge with a 30-question chapter practice test
Rate of a Chemical Reaction: Modifying Factors

1. 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.

Rate Constant and Rate Laws

2. 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.

Rate of a Chemical Reaction: Effect of Temperature

3. 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.

Endothermic and Exothermic Reactions

4. 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.

Limiting Reactants & Calculating Excess Reactants

5. Limiting Reactants & Calculating Excess Reactants

In this lesson, you'll learn what limiting reactant and excess reactant mean and how to determine which reactant is limiting in a chemical reaction when given the amount of each reactant. You'll also discover how to calculate the amount of product produced.

Calculating Reaction Yield and Percentage Yield from a Limiting Reactant

6. Calculating Reaction Yield and Percentage Yield from a Limiting Reactant

Learn what the theoretical yield, actual yield and percent yield are. Given the limiting reactant, learn how to calculate the theoretical reaction yield, which is also known as the ideal reaction yield and percentage yield.

Calculating Percent Composition and Determining Empirical Formulas

7. Calculating Percent Composition and Determining Empirical Formulas

Learn the difference between the empirical formula and chemical formula. Learn how to calculate the percent composition of an element in a compound. Learn how, if given a percent composition, to determine the empirical formula for a compound.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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Other Chapters

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