About This Chapter
MEGA General Science: Stoichiometry & Reactions - Chapter Summary
Our expert instructors have put these lessons together as a refresher for you as you prep for the MEGA General Science test. They will increase your understanding of stoichiometry and help you answer test questions about such things as:
- Working with intermolecular forces in chemistry
- Using calculations of a chemical equation and mole-to-mole ratios
- Employing mass-to-mass stoichiometric calculations
- Defining reactant in chemistry
- Neutralizing acid-base reactions
- Understanding redox reactions
- Modifying the rate of a chemical reaction
- Examining chemical and dynamic equilibrium
- Using LeChatelier's Principle
The lessons each include a multiple-choice quiz at the end to test your understanding of what was covered. You can send a question to the Study.com expert if you like. Video lessons include a transcript and also a timeline tool that will take you to specific places in the lesson that you need to review.
1. Intermolecular Forces in Chemistry: Definition, Types & Examples
This lesson defines the major forces that occur between molecules. Specifically, the lesson explains ion-dipole, dipole-dipole, and London (or dispersion) forces. Several examples are included to provide context.
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. Reactant in Chemistry: Definition & Examples
This lesson defines reactants within chemical reactions and how reactants are written in chemical reactions. The role of chemical reactions in reactions is explained, and several examples are provided to provide important context.
5. Neutralization and Acid-Base Reactions
From this lesson, you will understand the neutralization process between acids and bases. Learn how a hydroxide ion from a base reacts with a hydronium ion from an acid to neutralize each other and form water. Discover what conjugate acids and bases are and what the definition of amphoteric is.
6. Redox (Oxidation-Reduction) Reactions: Definitions and Examples
This short video will explain oxidation-reduction reactions, or redox reactions for short. The focus is on how electrons are transferred during redox reactions. Learn some neat mnemonic devices to help you remember when an atom is oxidizing or reducing.
7. 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.
8. Effect of Catalysts on Rates of Reaction
In this video lesson, we will learn how catalysts speed up chemical reactions. We'll also discuss how catalysts are used in industry and consider the catalysts in our own bodies. A short quiz will test your new knowledge.
9. 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.
10. Equilibrium: Chemical and Dynamic
Learn the definition of chemical equilibrium and how it is dynamic. Discover what the equilibrium constant is and how it shows whether the reaction favors the reactants or products. Learn how chemists designate equilibrium in an equation and how they show the difference in reaction rate.
11. LeChatelier's Principle: Disruption and Re-Establishment of Equilibrium
Learn how Le Chatelier's Principle describes the disruption and re-establishment of equilibrium. Learn to explain the factors that disrupt equilibrium, such as concentration, temperature, and pressure. Learn how each of these factors affects a system in equilibrium.
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Other chapters within the MEGA General Science: Practice & Study Guide course
- MEGA General Science: Practices of Science & Engineering
- MEGA General Science: Analyzing Scientific Information
- MEGA General Science: Science, Technology & Society
- MEGA General Science: Properties of Matter
- MEGA General Science: Gases
- MEGA General Science: Inorganic Compounds & Chemical Bonds
- MEGA General Science: Energy Transformations
- MEGA General Science: Force, Motion & Energy
- MEGA General Science: Newton's Laws
- MEGA General Science: Mechanical & Electromagnetic Waves
- MEGA General Science: Electricity & Magnetism
- MEGA General Science: Types of Cells
- MEGA General Science: Classification of Living Organisms
- MEGA General Science: Genetics
- MEGA General Science: History of Life & Evolution
- MEGA General Science: Organisms & Their Environments
- MEGA General Science: Earth History & Structure
- MEGA General Science: Earth's Hydrosphere
- MEGA General Science: Atmosphere, Climate & Weather
- MEGA General Science: The Universe
- MEGA General Science Flashcards