# Ch 3: Thermodynamics in Physical Science

Use these video lessons to learn about the laws of thermodynamics and find out how they apply to your daily life. Gauge your understanding of thermodynamics with self-assessment quizzes.

## Thermodynamics in Physical Science - Chapter Summary and Learning Objectives

Can we create or destroy energy? No, but the first law of thermodynamics tells us that it can be changed from one form to another. Can we consume all energy? Negative again, but you can expect it to become more and more disorganized over time. Now that you know the two laws of thermodynamics, you might want to use this chapter and dive in deeper to thermochemistry's state functions, phase changes and heating curves. Upon completion of this chapter, you should know the following:

• The connection between temperature and heat
• The distinction between enthalpy and entropy
• The process for calculating specific heat capacity for various substances
• The differences between cell potential energy and free energy

Video Objective
The Laws of Thermodynamics Understand the first and second laws of thermodynamics. Give examples from daily life.
State Functions in Thermochemistry Explain the concept of state functions, give examples, and tell why this is important to thermochemistry.
The Relationship Between Heat and Temperature Develop an understanding of the relationship between temperature and heat.
Energy and Life: The Transformation of Energy in Living Organisms Describe photosynthesis and cellular respiration. Compare endergonic and exergonic processes.
Changes in Heat and Energy Diagrams Study how diagrams may be used to illustrate the connections between temperature and heat while changing phases.
How to Calculate Specific Heat Capacity for Different Substances Explore specific heat capacity through experimentation.
Phase Changes and Heating Curves Name the four phases. Explain plateaus and phase transitions.
Changes in State Learn the differences between phases and states.
Mechanical Equivalent of Heat Discuss this concept in reference to motion, heat and work.
Heat Transfer and Phase Changes Describe what occurs during a phase change and be able to interpret a heating curve.
Heat Capacity Define heat capacity.
Enthalpy: Energy Transfer in Physical and Chemical Processes Explain this energy transfer.
Using Hess's Law to Calculate the Change in Enthalpy of a Reaction Discuss how this law is expressed through the first law of thermodynamics.
Calorimetry: Measuring Heat Transfer and Heat Capacity Describe the various phase changes that occur during heat transfer.
Predicting the Entropy of Physical and Chemical Changes Learn how the concept of entropy relates to quantity and quality.
Free Energy: Predicting the Spontaneity of a Reaction Define free energy and explain how spontaneity of reactions may be predicted.
The Relationship Between Enthalpy (H), Free Energy (G) and Entropy (S) Understand the connections between these three concepts.
Electrochemistry: Free Energy and Cell Potential Energy Describe electrochemical cells and explain how they work.

16 Lessons in Chapter 3: Thermodynamics in Physical Science
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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