There are reasons elderly people are more susceptible to diseases. A video lesson instructor discusses the changes cells endure over someone's lifespan and how that affects the likelihood of contracting a disease.

CPT theory is the basis for much of physics, but what happens when researchers disprove the theory piece by piece? Explore the idea with a video about the Nobel Prize-winning breakthroughs that shifted the entire way scientists...

Scientists discovered the first law of thermodynamics 25 years after the second law of thermodynamics. The seemingly obvious discoveries sometimes confuse scientists while more complex challenges encourage extra study—and take more time...

Your car's engine is likely to be only 20 percent thermally efficient. Why so inefficient? Viewers of the 10th video in an engineering series learn how the second law of thermodynamics and entropy limit the efficiency of a car engine....

Just when you thought you had life figured out ... here comes another great video! Young biologists discover the multi-faceted meaning of life through a video from a comprehensive science playlist. Content includes when life appeared on...

Teach the basics of thermodynamics with an energizing video. A thorough lesson explains the First and Second Law of Thermodynamics. Scholars learn how these laws apply to isovolumetric, isobaric, isothermal, and adiabatic processes and...

Mixing milk and coffee is a complex example in the eyes of a quantum physicist. A creative lesson compares a tendency toward entropy with complexity. Learners view a mixture of coffee and milk as first simple, then complex, and finally...

Take a ride through time as you learn about the status of the past, present, and future from a physics perspective. The video instructor explains the Big Bang Theory through the equilibrium of time. Learners connect the Second Law of...

In the eyes of a physicist, the purpose of life is to continue the mission of the sun. An engaging lesson discusses the increasing entropy levels of energy that originates at the sun. As life forms use that energy, entropy rises...

Energy can be either useful or useless, depending on you look at it! A video lesson examines how entropy works with the Law of Conservation of Energy. Scholars learn how Earth receives and uses photons from the sun in a state of low...

Time isn't considered a property of physics, but rather a feature. Sean Carroll explains how we remember the past but not the future; yet we still consider time a dimension in physics. The video offers a brief overview of entropy and the...

Chemistry makes it seem that everything has its place and behaves according to different laws. Not always true! Disorder and chaos can and do happen in chemistry; scientists call this disorder entropy. Learn about entropy and its...

Why do we bother to dust when more will start to land as soon as we get rid of it? What is dust made of and why won't it ever go away? The video answers these questions and more. 

Has your class ever wondered why time always progresses in a forward direction and why we cannot travel backward? Learners view this short video segment to explore the concept of entropy and its relevance to time in relation to their...

Chemical reactions are happening all around us every second of every day, but what exactly causes these changes to occur? Using easy-to-understand analogies, this video explains how the concepts of enthalpy and entropy determine the ways...

When is a person no longer living? This question has been puzzled over for millennia, but is there a clear answer? Watch as this video examines the biological line separating life and death.

How can it take water hours to freeze, but a cold pack can go from room temperature to near freezing in an matter of moments? Find out with this short video that explores the endothermic reaction that make these modern marvels possible.

An understanding of chemical reactions really boils down to two concepts: entropy and enthalpy. Follow along with this instructional video as it explains how these two principles are used to calculate Gibbs free-energy which...

Here is a darling demonstration of the second law of thermodynamics. Entropy has increased in a toddler's playroom as he removed toys and books off shelves and left them on the floor when he moved to the next activity. Yes, microscopic...

This video lecture will show use how to use the Gibbs Free Energy equation to predict whether a reaction is going be spontaneous or not. [9:17]

An explanation of the Second Law of Thermodynamics. [10:22]

An explanation to prove that entropy, labeled as S, is a valid state variable. [15:38]

Introduction to Gibbs free energy. Includes information about the relationship between spontaneity and entropy, enthalpy, and temperature. [17:40]

Calculating change in Gibb's free energy to identify whether or not a reaction is spontaneous. [9:56]