Ch 7: Conservation of Matter & Stoichiometry

About This Chapter

If you need help studying for a test or completing a homework assignment, check out this chapter on conservation of matter and stoichiometry. You can access these bite-size lessons and multiple-choice quizzes on any mobile device or computer.

Conservation of Matter & Stoichiometry - Chapter Summary

Our experienced instructors present topics relating to the conservation of matter and stoichiometry in this collection of informative lessons. Get up to speed on chemistry concepts that include chemical reactions, balancing chemical equations and limiting reactants. This chapter is designed to help you achieve the following objectives:

  • Detail the formula used to find molar mass
  • Understand the use of moles in chemical equations
  • Discuss mole-to-mole ratios and calculations of a chemical equation
  • Outline mass-to-mass stoichiometric calculations
  • Describe how to calculate relative quantities in a gas or solution using stoichiometry
  • Limit reactants and calculate excess reactants
  • Calculate reaction yield and percentage yield from a limiting reactant
  • Identify oxidizing and reducing agents

Each lesson is accompanied by a short self-assessment quiz to check your understanding and retention of concepts covered. We want you to be able to study whenever it works best for you, so we've made these materials mobile-friendly and accessible at any time. If you have questions about any of the lessons, feel free to submit them to our subject matter experts.

10 Lessons in Chapter 7: Conservation of Matter & Stoichiometry
Test your knowledge with a 30-question chapter practice test
Chemical Reactions and Balancing Chemical Equations

1. Chemical Reactions and Balancing Chemical Equations

In this lesson, you'll learn how to balance a chemical reaction equation using the conservation of matter law. You'll also learn how to write both word and formula equations, what the subscripts after a letter mean and what the numbers in front of compounds mean.

What is Molar Mass? - Definition, Formula & Examples

2. What is Molar Mass? - Definition, Formula & Examples

Compounds have mass, and this is what we call the molar mass. In this lesson, we will discuss the molar mass and go over examples on how to calculate it.

Using Moles in Chemical Equations

3. Using Moles in Chemical Equations

In this lesson we will explore chemical equations and what we can learn about them using moles. We will learn what a mole is and how moles are used to determine the mass needed for a reaction to occur.

Mole-to-Mole Ratios and Calculations of a Chemical Equation

4. Mole-to-Mole Ratios and Calculations of a Chemical Equation

Learn what a mole ratio is and how to determine and write the mole ratio relating two substances in a chemical equation in this video lesson. Also, learn to make mole-to-mole calculations and solve problems involving moles of substances.

Mass-to-Mass Stoichiometric Calculations

5. Mass-to-Mass Stoichiometric Calculations

Learn how to set up and make mole to mass, mass to mole and mass to mass stoichiometric calculations. Learn how the ratios of moles helps you compare and make calculations. Learn how to relate mole ratios to molar mass.

Stoichiometry: Calculating Relative Quantities in a Gas or Solution

6. Stoichiometry: Calculating Relative Quantities in a Gas or Solution

In this lesson, learn about molar volume and how to set up and make stoichiometric calculations with gases. Then learn about solution stoichiometry and how to make stoichiometric calculations with solutions.

Limiting Reactants & Calculating Excess Reactants

7. Limiting Reactants & Calculating Excess Reactants

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

Calculating Reaction Yield and Percentage Yield from a Limiting Reactant

8. 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.

Assigning Oxidation Numbers to Elements in a Chemical Formula

9. Assigning Oxidation Numbers to Elements in a Chemical Formula

Learn the importance of oxidation in chemical reactions. Discover the rules for assigning oxidation numbers in both covalent compounds and ionic compounds. Learn how to assign the oxidation number for each element in a chemical formula.

Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents

10. Balancing Redox Reactions and Identifying Oxidizing and Reducing Agents

Learn how to identify an oxidizing agent and a reducing agent and how the loss or gain of electrons applies to each one. Learn the relationship between an oxidized or reduced substance and the oxidizing or reducing agent associated with it. Discover what steps to take to balance a redox reaction.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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