An experienced chemistry professor used to say that it took about one explosion per week to maintain college students' attention in chemistry lectures. At that rate, we'd get in pretty big trouble with a lot of parents and teachers! Don't worry, we still have lots of bubbles, fizzes, bangs, and color changes for you to explore.
Have you ever gone to pour yourself a cup of milk, and all you get is clumps? What happened to the milk is called coagulation, which is the mechanism that occurs when proteins in the milk clump together. While you do not necessarily want this in your milk, without coagulation (or curdling), there would be no cheese or yogurt, which is why it is a very important process in the food industry. Wonder how you can make milk curdle? Do this activity to find out!
Use these free STEM lesson plans and activities to teach students about biotechnology—options for all grade levels!
Biotechnology involves using biological processes and systems to make or improve products. Using yeast to make bread is often offered as a simple example of biotechnology, as a living organism (yeast) is used to make a specific food product (bread). Many people think of biotechnology, however, in more cutting-edge contexts,…
Use these free STEM lesson plans and activities to teach and explore chemical reactions with K-12 students.
The best way to teach chemical reactions is to show them in action or, when possible, let students get hands-on with exploring the reactions. If you are planning to teach a unit on chemical reactions, you might find just what you need in one the 15+ free STEM lessons and activities listed below.
Lesson Plans to Explore Chemical Reactions
In this fun chemistry lesson, students will explore chemical reactions by mixing pineapple juice and milk. Students will observe whether the properties of milk change when it is mixed with pineapple juice, as well as how they change. They will then infer from their results whether a chemical reaction happened. In the process, they will not only learn about chemical reactions but also discover the importance of enzymes and their role in the human body.
NGSS Performance Expectations:
Conduct an investigation to determine whether the mixing of two or more substances results in new substances.