About This Chapter
Balancing & Using Chemical Equations - Chapter Summary
If you would like to learn more about balancing and calculating chemical equations, go through the video lessons included here. These lessons will go over specific types of equations, such as mole-to-mole ratios and double-replacement reactions, as well as essential definitions and step-by-step examples for using them. Despite the complexity of these topics, our lesson instructors go over all relevant information in a clear and comprehensive format. Specific topics covered here include:
- Chemical reactions and steps to balancing them
- Mole-to-mole ratios and calculations
- Making mass-to-mass stoichiometric calculations
- How to write and balance combustion equations
- Rules for assigning oxidation numbers
- Equations and examples of neutralization, single-replacement and double-replacement reactions
- Endothermic and exothermic reactions
- Factors that impact the rate of chemical reactions
Each video contains tags that help you locate the most important moments in the lesson corresponding to that topic's main points. The chapter also provides you with complete transcripts of each video that you can study at your own convenience. Once you feel confident in your understanding of these topics, you can answer the questions in the chapter's practice quizzes and final exam to see how much you can remember from the lessons.
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. 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.
3. 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.
4. Writing and Balancing Combustion Reactions
Discover what a combustion reaction is as well as what reactants are needed and what products are produced. Learn to write and balance a combustion reaction. Through the concepts of bond energies, learn how to explain why combustion reactions are largely exothermic.
5. 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.
6. Neutralization Reaction: Definition, Equation & Examples
Have you ever had a burning feeling in your stomach after eating too much spicy food? This is due to a buildup of stomach acid and can be relieved by taking an antacid. This causes a neutralization reaction, which is what we will cover in this lesson.
7. Single-Displacement Reaction: Definition & Examples
There are so many chemical reactions that occur around us that we classify them into different types. In this lesson, we will discuss single-displacement reactions, one of the main types of chemical reactions.
8. Double Displacement Reaction: Definition & Examples
When a chemical reaction occurs, bonds are broken and new bonds are formed and products have a different identity from the reactants. In this lesson, we will discuss one of the main types of chemical reactions, called a double displacement reaction.
9. 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.
10. 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.
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Other chapters within the Pennsylvania Grades 4-8 - Science Subject Concentration (5159): Practice & Study Guide course
- Scientific Inquiry & Methodology
- Scientific Data Collection & Analysis
- Science Laboratory Equipment & Safety
- Major Developments & Historical Figures in Science
- Basic Principles of Matter & Energy
- Relationships Between Matter & Energy
- Structure of an Atom
- Interdisciplinary Applications of Energy & Matter
- Impact of Science & Technology on the Environment
- Energy Production & Resource Use
- Science & Technology Used in Everyday Life
- Science & Public Health
- Mechanics in Physics
- Analyzing Motion & Forces
- Electricity & Magnetic Forces
- Wave Characteristics & Phenomena
- Light, Sound & Waves
- Elements & The Periodic Table
- Chemical Bonding & Simple Chemical Compounds
- Interpreting Chemical Formulas
- Matter & Phase Changes
- Acid-Base Chemistry
- Understanding Solutions & Solubility
- Structure & Function of Cells & Organelles
- Understanding Biochemistry
- Understanding Genetics
- Theory & Mechanisms of Evolution
- Hierarchical Classification of Living Things
- Plant Structure & Function
- Animal & Human Anatomy & Physiology
- Basics of Ecology
- Earth's Surface Materials
- Earth's Internal Structure & Processes
- Geologic History
- Earth's Hydrosphere
- Earth's Bodies of Water
- Basics of Meteorology
- Earth's Climate & Seasons
- The Solar System & The Earth-Moon-Sun Relationship
- Galaxies & the Universe
- Space Exploration & Technology
- Pennsylvania Grades 4-8 - Science Subject Concentration Flashcards