About This Chapter
Thermochemistry and Thermodynamics - Chapter Summary
Watching video lessons in the thermochemistry and thermodynamics chapter could help you brush up on your knowledge of thermal energy and its effects. After completing this series of lessons you will be able to calculate specific heat capacity and change in enthalpy of a reaction. A wide range of video lessons apply to this subject, including:
- Measuring heat transfer and heat capacity
- Endothermic and exothermic reactions
- Energy transfer in physical and chemical processes and calculations using Hess's Law
- Calculations of specific heat capacity for different substances
- Gibbs free energy and spontaneous reactions
- State functions in thermochemistry and reduction in chemistry
- The laws of thermodynamics: including laws of conservation and energy, entropy and systems, and the Zeroth law of thermodynamics
- Relationship between enthalpy (H), free energy (G) and entropy (S)
In addition to refreshing and adding to your knowledge in these subject areas, these video lessons will help you apply the concepts presented to real-life scenarios. These lessons use everyday examples and accessible language to make physical sciences information easier to understand and remember. The video lessons each come with a self-assessment quiz, so you'll be able to tell right away how well you've retained the information in each lesson. Finish your study of this topic by completing the end-of-chapter exam to see how well you are doing.
1. State Functions in Thermochemistry
This lesson defines state functions and explains why state functions are so useful in thermochemistry and thermodynamics. You'll also see a few examples of common state functions.
2. 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.
3. Enthalpy: Energy Transfer in Physical and Chemical Processes
This video explores the relationship between chemistry and energy. We learn the general properties of energy and the concepts of temperature and heat. We will learn about energy flow and consider the enthalpy change during chemical reactions.
4. Using Hess's Law to Calculate the Change in Enthalpy of a Reaction
Want to make sure you don't blow yourself up during a chemical reaction? This lesson will help you avoid this by teaching you Hess's Law. This is one way to calculate the heat transferred, or enthalpy change, of a chemical reaction.
5. The Relationship Between Enthalpy (H), Free Energy (G) and Entropy (S)
In this video lesson, we'll study free energy (G) and its relationship to enthalpy, entropy and temperature. You'll also learn why free energy (G) is the single most useful criterion for predicting the spontaneity and direction of a chemical reaction.
6. Calorimetry: Measuring Heat Transfer and Heat Capacity
This video lesson explains the technique of calorimetry used to measure heat transfer in chemical reactions. You will see how different materials have different specific heat capacities. You will learn how to carry out heat calculations using a simple equation.
7. How to Calculate Specific Heat Capacity for Different Substances
This lesson describes specific heat capacity and explains how the specific heat capacity of water helps to maintain a relatively constant temperature in nature. Learn how to identify the specific heat capacity of other common materials and how to calculate specific heat capacity with an experiment.
8. Spontaneous Reactions & Gibbs Free Energy
In this lesson, we will learn about spontaneous reactions and how we can use Gibbs free energy to predict them. We will remind ourselves about enthalpy and entropy and discuss the importance of temperature and spontaneity.
9. The Zeroth Law of Thermodynamics
After watching this video, you will be able to state the zeroth law of thermodynamics, what it means, and why it is important. A short quiz will follow.
10. The Laws of Thermodynamics
Learn about the first and second laws of thermodynamics. Find out how energy is generated, how it converts from one form to another, and what happens to energy in a closed system.
11. First Law of Thermodynamics: Law of Conservation of Energy
This video describes the first law of thermodynamics. Several examples of the application of this law are discussed. The significance of the law and its practical application are discussed as well.
12. Second Law of Thermodynamics: Entropy and Systems
In this lesson, we'll learn about the second law of thermodynamics. By studying this law, you'll understand how energy works and why we're all moving towards eventual chaos and disorder.
13. Reduction in Chemistry: Definition & Overview
When atoms are greedy for electrons, they steal them from other atoms. This reduces their charge. You can see the effects of reduction in the world around you. Learn more about reduction in chemistry and see some examples of it.
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