American Chemical Society
Energy and Entropy of a Stretched Rubber Band
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...
Curated OER
Being Spontaneous
In this spontaneous reactions learning exercise, 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...
Curated OER
Gibbs Free Energy
In this chemistry activity, students solve 2 problems on Gibbs free energy. They calculate the standard free energy of formation for given reactions.
Chemistry Collective
Virtual Lab: DNA Binding Problem
Why do the bases in DNA pair up the way they do? Unravel the mystery of the double helix in a virtual lab. Young scientists follow in the footsteps of Watson and Crick to determine the free energy associated with DNA base pair binding....
Curated OER
Metals and Hydrogen Cars: Chemistry 10-12
Students investigate which metal is best to use as storage material in hydrogen cars. In this chemistry lesson plan, students differentiate endothermic and exothermic reactions. They write a reflection paragraph about what they learned...
Teach Engineering
Wizardry and Chemistry
No need to go to Ollivanders to buy a magic wand. In the chemistry lab activity, young magicians mix chemicals to create combustible compounds. By applying these compounds to an iron wire, they create magic wands.
Curated OER
Thermochemistry
Learners begin familiarizing themselves with the concept of energy, systems and state functions. They are introduced to the following concepts: Conservation of Energy, Systems, Heat, Entropy, Enthalpy, and Gibbs Free Energy.
Curated OER
Review for Thermodynamics Quiz
In this thermodynamics worksheet, students review kinetic and potential energy, enthalpy, entropy, and standard hear of formation. This worksheet has 1 short answer and 5 problem solving questions.
Curated OER
Chemistry Worksheet 6
In this chemistry worksheet, students calculate specific changes that take place with different chemical reactions. Students indicate whether the reactions are endothermic or exothermic and spontaneous or nonspontaneous.
Curated OER
Answer Key for More Advanced Electrochemistry Calculations
In this electrochemistry worksheet, students solve 9 problems such as identifying masses of metals produced at cathodes, determining the potential of a cell's electrode and writing cell reactions along with their potential.
Curated OER
Thermodynamics Homework Problem Set
In this chemistry worksheet, students determine the equilibrium pressure of NO at each temperature listed. Then they explain why lowering the combustion temperature would have any effect on the NO emission. Students also use the values...