About This Chapter
TExES Science 7-12: Chemical Equations & Stoichiometry - Chapter Summary
Within this chapter, you will review different types of chemical equations and reactions and look at how to balance these equations for the TExES Science 7-12 exam. Topics addressed in this chapter include:
- Mole-to-mole and mass-to-mass ratios
- Limiting reactants
- Calculating reaction yield and percent composition
- Collision theory
- Activation energy
- Rate laws, constants, and kinetics
- Safe practices in chemistry
Instructors give you the tools you'll need to balance chemical equations correctly, prepping you for these types of questions on the exam. See how much information you've retained after watching the video lessons by using the self-assessment quizzes. All of our resources can be accessed from smartphones and tablets, letting you study for the exam wherever you are.
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.
2. Decomposition and Synthesis Reactions
Learn how to write, identify and predict the products of simple synthesis and decomposition reactions. This includes the composition of reactions with oxygen, of two metals, and of metals with nonmetals, as well as the decomposition of metal carbonates, metal chlorates and metal hydroxides.
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.
10. 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.
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. 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.
13. Reaction Mechanisms and The Rate Determining Step
This lesson explores what a reaction mechanism is and how it relates to the speed of a reaction. You'll discover how to pinpoint the rate-determining step and learn how to write a rate law based on the rate-determining step.
14. Chemical Kinetics, Reaction Rate Constant & Equilibrium Constant
Are formulas, rate constants, and chemical reactions getting you down? Don't worry, this lesson will explain how reaction rate and equilibrium constants are related to chemical reactions.
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Other chapters within the TExES Science 7-12 (236): Practice & Study Guide course
- About the TExES Science 7-12 Exam
- TExES Science 7-12: Scientific Inquiry & Processes
- TExES Science 7-12: Motion
- TExES Science 7-12: Fluid Mechanics
- TExES Science 7-12: Newton's Laws
- TExES Science 7-12: Oscillations
- TExES Science 7-12: Laws of Gravitation
- TExES Science 7-12: Electrical Forces & Fields
- TExES Science 7-12: Electricity & Magnetism
- TExES Science 7-12: Potential & Capacitance
- TExES Science 7-12: Work, Energy & Power
- TExES Science 7-12: Linear & Angular Momentum
- TExES Science 7-12: Thermodynamics
- TExES Science 7-12: Optics & Waves
- TExES Science 7-12: Quantum Physics
- TExES Science 7-12: Matter & Atomic Structure
- TExES Science 7-12: Periodicity
- TExES Science 7-12: Properties of Gases
- TExES Science 7-12: Chemical Bonding
- TExES Science 7-12: Equilibrium
- TExES Science 7-12: Properties of Solutions
- TExES Science 7-12: Energy Transformations
- TExES Science 7-12: Radioactivity
- TExES Science 7-12: Oxidation-Reduction Reactions
- TExES Science 7-12: Acid-Base Chemistry
- TExES Science 7-12: Organic Compounds
- TExES Science 7-12: Cell Biology
- TExES Science 7-12: Prokaryotic & Eukaryotic Cells
- TExES Science 7-12: Protists, Fungi & Viruses
- TExES Science 7-12: Plant Cells
- TExES Science 7-12: Nucleic Acids & Enzymes
- TExES Science 7-12: Transcription & Translation
- TExES Science 7-12: Cell Reproduction & Division
- TExES Science 7-12: Metabolic Biochemistry
- TExES Science 7-12: Basic Genetics
- TExES Science 7-12: DNA Replication
- TExES Science 7-12: Theory of Biological Evolution
- TExES Science 7-12: Evolutionary Change on Earth
- TExES Science 7-12: Taxonomic Systems
- TExES Science 7-12: Plant Biology
- TExES Science 7-12: Plant Reproduction & Growth
- TExES Science 7-12: Animal Biology
- TExES Science 7-12: Human Organ Systems
- TExES Science 7-12: Human Reproduction & Development
- TExES Science 7-12: Homeostasis of Organisms
- TExES Science 7-12: Biology & Behavior
- TExES Science 7-12: Ecosystems & Ecological Cycles
- TExES Science 7-12: Earth's Spheres & Internal Structure
- TExES Science 7-12: Minerals & Rocks
- TExES Science 7-12: Earth's Changing Surfaces
- TExES Science 7-12: Geologic Time
- TExES Science 7-12: The Hydrosphere
- TExES Science 7-12: Solar System & the Universe
- TExES Science 7-12: The Atmosphere
- TExES Science 7-12: Weather & Storms
- TExES Science 7-12: Learning & Instruction
- TExES Science 7-12 Flashcards