Entropy Teacher Resources

Sal provides two definitions for entropy: the thermodynamic definition and the mathematical definition. Entropy and the 2nd Law of Thermodynamics are the focuses of this chemistry video. The law states that the change in entropy in the...

Entropy is the focus of this chemistry video. More specifically, Sal drives the point home that entropy is a macro state variable. This means that a change in the universe's entropy must always be positive, because when heat is added to...

In the previous video, Sal introduced students to entropy and the 2nd Law of Thermodynamics. An example he used had a couple of points that were factual, but not clear to many students. In this video, he goes over those points again in...

Entropy, often misunderstood yet easily proven through mathematics, caused confusion for many years. A video explains entropy through simple models. It demonstrates the mathematical proof behind the phenomenon.

A beautifully designed, eighteen-page chemistry tutorial awaits your learners. The main topics: enthalpy and entropy. By completing this lesson, students will be able to define these concepts, determine whether each is increasing or...

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...

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...

My room isn't messy — it's a scientific experiment in entropy! Scholars investigate entropy, enthalpy, and spontaneity through a guided procedure and set of questions. The lesson connects the Second Law of Thermodynamics, energy...

Stephen Perry invented and patented the modern rubber band in 1845. Young scientists put his discovery to work as they use rubber bands to observe entropy and enthalpy. They determine the change in free energy to figure out if it...

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...

An entertaining presentation introduces both enthalpy and entropy. It explains equilibrium as the balance between these two measures and provides simple diagrams and graphics for additional clarity.

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...

Students experience work and power and observe the process of entropy. In this physics lesson, students conduct an experiment that shows work (force & distance), power (work/time), and exemplifies the process of entropy.

In this entropy worksheet, students define entropy and determine if reactions are exothermic or would occur spontaneously. This worksheet has 10 problems to solve.

In this physical and chemical change worksheet, students calculate the entropy change involved in different chemical changes. This worksheet has 4 problems to solve.

Twelve fundamental particles exist in our universe, and they interact in exactly four ways. Does this mean we should be able to predict the future? We know entropy increases, but how does that impact us? These questions and more become...

In this entropy worksheet, students calculate the change in entropy and rank absolute molar entropies. This worksheet has 12 problems to solve.

In this enthalpy and entropy worksheet, students read about the differences between enthalpy and entropy and answer three critical thinking questions about the reading.

In this spontaneous reactions activity, students read about entropy, enthalpy and Gibbs free energy. They complete a table with reaction conditions and determine if the reaction is spontaneous or not. They solve three problems about free...

In this thermodynamics learning exercise, learners fill in the blanks with terms related to specific heat, calorimetry, phase changes, enthalpy, entropy and free energy.

In this thermodynamics instructional activity, learners answer multiple choice questions about enthalpy and entropy, they calculate molar entropies and they determine equilibrium constants and free energy of reactions.

In this chemistry worksheet, students solve twenty five multiple choice problems about a variety of chemistry topics. Students answer questions about equilibrium, solubility, reaction rates, titrations, and entropy.