Equilibrium and Milk of Magnesia Rainbow
A Carolina EssentialsTM Demonstration Total Time: 15-20 mins Prep: 20 mins | Activity: 15-20 mins Chemistry 9-12 High School Overview This demonstration shows a colorful reaction that is a good introduction to Le Châtelier’s principle, solubility, stoichiometry, neutralization reactions, and reaction rates. The demonstration uses readily available chemicals, is easy to set up and perform, […]
Thermochemistry: An Endothermic Reaction
A Carolina EssentialsTM Demonstration Total Time: 10 mins Prep: 15 mins | Activity: 10 mins Physical Science 6-12 Middle/High School Overview In this thermochemistry demonstration, students observe an extreme, spontaneous endothermic reaction between 2 solid compounds, measure changes in temperature, and make observations. The demonstration may be used with physical science or chemistry students as […]
A Model for Heat Capacity of Metals
A Carolina EssentialsTM Activity Total Time: 60-70 mins Prep: 15 mins | Activity: 45-55 mins Physical Science | Chemistry 9-12 High School Overview This simple activity models how kinetic energy is transformed into heat or thermal energy on the particle level. Additionally, by comparing data for 3 different metals—aluminum, copper, and lead—students construct a model […]
Water: A Liquid That Can Take the Heat
Water is an amazing liquid. Not only is it the main solvent of cellular protoplasm, it also helps moderate climates with its high heat capacity. Water absorbs a large quantity of heat and slowly releases it over a period of time. This is the reason coastal climates are more moderate than climates farther inland. Water’s […]
Petri Dish Electrolysis Activity
Petri dish electrolysis is a simple, colorful way to introduce or wrap up many topics in chemistry. Use this activity to introduce reduction-oxidation reactions and electrochemistry. When using it at the beginning of a lesson, you can learn what students already know, while using it at the end can highlight their learning. Student misconception: Electrolytic cells […]
Elephant Toothpaste
A Carolina EssentialsTM Activity Total Time: 50 min Prep: 30 | Activity: 20 Physical Science | Chemistry 6-12 Middle | High School Total Time: 50 min [ Prep: 30 | Activity: 20 ] Subject: Physical Science | Chemistry Grade: Middle | High School Introduction This quick demonstration showing the decomposition of hydrogen peroxide, catalyzed by […]
Chemistry Solutions Practice Problems
How to Make Luminol Glow: Glowing Reaction Activity
Luminol is a chemical that produces a beautiful blue fluorescence when oxidized by hydrogen peroxide. In addition to providing one of the best-known examples of chemiluminescence, it is also a valuable crime scene investigation tool whose blue glow reveals the presence of blood. For teachers, demonstrating the luminol reaction can add to discussions of oxidation-reduction […]
A New Approach to Teaching Atomic Theory
For chemistry teacher Siobhan Julian, teaching the history of atomic theory by lecture “was dry and tedious and boring for everyone involved.†Then she took a fresh approach—one that focuses on doing science to learn science history.
Let’s Do S’more Chemistry!
Introduction This laboratory activity explores the topics of stoichiometry and limiting reactants in a fun, delicious way! Mass/mole relationships and limiting and excess reactants can be difficult topics for students to grasp. Use this activity to introduce or reinforce these principles. Stoichiometry is the area of chemistry that allows us to determine the relative quantities […]