About This Chapter
NYSTCE Chemistry: Stoichiometry - Chapter Summary
This chapter provides you with a comprehensive overview of stoichiometry that can ensure you're prepared to answer questions on the NYSTCE Chemistry assessment. Review the videos to increase your ability to:
- Understand Avogadro's number, chemical reactions and chemical equations
- Demonstrate your comprehension of mole-to-mole ratios
- Make mass-to-mass calculations
- Limit and calculate reactants and excess reactants
- Calculate relative quantities in a gas or solution, and understand reaction yield and percentage yield
- Show how to calculate percent composition
- Determine empirical and chemical formulas
Use this step-by-step guide to learn more about stoichiometry with help from expert instructors who offer a wealth of information in the subject area. They present the materials in a detailed and engaging manner that helps you fully absorb the materials as you study for the exam.
NYSTCE Chemistry: Stoichiometry Chapter Objectives
In New York State, educators take the NYSTCE Chemistry assessment to secure the licensure needed to teach chemistry in classrooms. The test consists of 90 selected-response items and 1 constructed-response items that are broken into seven subareas. Topics in this chapter are found in the stoichiometry and solutions subarea, which constitutes about 13% of the total test.
Simplify the process of studying for the exam by exploring the lessons in this chapter. You can review them as videos or explore full transcripts with easily identifiable vocabulary words. Test your comprehension of the lessons by taking short self-assessment quizzes and a chapter exam. Taking these steps can improve your chances of earning a passing score of 220 or higher on the assessment.
1. Avogadro's Number: Using the Mole to Count Atoms
How do we move from the atomic world to the regular world? Because atoms are so tiny, how can we count and measure them? And what do chemists celebrate at 6:02 AM on October 23rd each year? In this lesson, you will be learning how Avogadro's number and the mole can answer these questions.
2. 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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. Hydrates: Determining the Chemical Formula From Empirical Data
Learn the definition of a hydrate and an anhydrate in this lesson. Discover how, when given experimental data, you can determine the formula of a hydrate by following simple steps that include finding the moles of hydrate and anhydrate and comparing the two to write the formula.
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Other chapters within the NYSTCE Chemistry (007): Practice and Study Guide course
- NYSTCE Chemistry: Foundations of Scientific Inquiry
- NYSTCE Chemistry: Physical & Chemical Properties
- NYSTCE Chemistry: Atomic Structure & Quantum Theory
- NYSTCE Chemistry: The Periodic Table
- NYSTCE Chemistry: Gases
- NYSTCE Chemistry: Nuclear Transformation
- NYSTCE Chemistry: Principles of Calorimetry
- NYSTCE Chemistry: Thermodynamics
- NYSTCE Chemistry: Chemical Bonds
- NYSTCE Chemistry: Chemical Reactions
- NYSTCE Chemistry: Chemical Equilibrium
- NYSTCE Chemistry: Acid-Base Chemistry
- NYSTCE Chemistry: Solutions & Solubility
- NYSTCE Chemistry: Nuclear Reactions
- NYSTCE Chemistry: Chemicals & the Environment
- NYSTCE Chemistry Flashcards