About This Chapter
WEST Chemistry: Thermodynamics - Chapter Summary
This chapter will help you review for questions about the laws, concepts and calculations of thermodynamics on the Washington Educator Skills Test-Endorsement (WEST-E): Chemistry exam. Follow along with the lesson videos of this chapter to review:
- Laws of thermodynamics and state functions in thermochemistry
- The transfer of energy in physical and chemical processes
- Properties of bond energy
- Calculations for the change of enthalpy from a reaction, and the standard enthalpy of formation
- Predicting entropy changes: chemical or physical reactions
- Predicting the spontaneity of a reaction, free energy
- Relationship between enthalpy, entropy and free energy
- Characteristics of endothermic and exothermic reactions
These lessons come with a series of transcripts and quizzes to help you reinforce your understanding of the material. Read through the transcripts to improve your retention of the information presented in the lessons and go over the key vocabulary terms. Lesson quizzes can help you determine the topics you understand and those you'll want to review further.
WEST Chemistry: Thermodynamics Objectives
The objective of the WEST-E: Chemistry exam is to ensure that Washington educators wanting to teach chemistry possess the knowledge needed to preside over chemistry classrooms. To pass this computer-based certification exam, you will need to accurately respond to 110 multiple-choice questions in a two-hour and 30-minute testing session. Twenty-six percent of the material covered in this exam is about energy and chemical bonding. Use this chapter to prepare for related exam questions about thermodynamics.
1. 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.
2. 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.
3. 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.
4. 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.
5. Bond Energy: Definition & Equation
Chemical reactions involve the breaking and forming of chemical bonds. In this video lesson, we will learn about bond energy and how we can use it to measure the overall energy change of a chemical reaction.
6. 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.
7. Standard Enthalpy of Formation: Explanation & Calculations
In this video lesson, we learn about the standard enthalpies of formation of substances. We will also learn how we can use these values as one way to calculate the standard enthalpy change of a chemical reaction.
8. Predicting the Entropy of Physical and Chemical Changes
Ever wonder why your bedroom always ends up a mess within hours of you tidying up? That is the magic of entropy. In this lesson, you'll learn why disorder is the natural state of matter and how we can predict entropy change in a physical or chemical reaction.
9. Free Energy: Predicting the Spontaneity of a Reaction
Ever heard the phrase 'pushing Jell-O uphill on a hot day'? This describes a hopeless task. In this lesson, we will predict hopeful and hopeless reactions. Or put scientifically, predicting spontaneous (hopeful) and non-spontaneous (hopeless) reactions.
10. 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.
11. 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.
12. 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.
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Other chapters within the WEST Chemistry (306): Practice & Study Guide course
- WEST Chemistry: Properties of Matter
- WEST Chemistry: Atomic Structure
- WEST Chemistry: Liquids & Solids
- WEST Chemistry: Gases
- WEST Chemistry: Chemical Bonds
- WEST Chemistry: Inorganic & Organic Compounds
- WEST Chemistry: Chemical Reactions
- WEST Chemistry: Understanding Equilibriums
- WEST Chemistry: Redox Reactions & Electrochemistry
- WEST Chemistry: Acids & Bases
- WEST Chemistry: Stoichiometry & Chemical Equations
- WEST Chemistry: Properties of Solutions
- WEST Chemistry: Basics of Science
- WEST Chemistry: Interdisciplinary Relationships in Science
- WEST Chemistry Flashcards