Types of Chemical Reactions
Backgrounders
Learn about the four main types of chemical reactions.
The Solutioneers Week 5: Chemical Bonding
Interactives
This week's episodes and hands-on activity explore some cool chemistry!
Why Do Apples Turn Brown After You Cut Them?
STEM Explained
Has your fresh juicy apple turned an unsightly brown? Learn about the redox reaction behind the transformation.
What is Acid Rain?
STEM Explained
Acid rain is any precipitation that has an unusually low pH. It can be rain, snow, fog, etc. But what is a low pH and why is this a problem?
How can chemistry help you take care of your teeth?
STEM Explained
What are your teeth made up of? What chemistry is at work in your mouth? Why do some people get cavities even if they brush regularly?
What is Ocean Warming and Why Does It Matter?
STEM Explained
Oceans absorb the greatest amount of solar radiation on Earth. Ocean warming can lead to glaciers melting and ocean acidification.
What are curds and whey?
Hands-on Activities
It starts with curds and whey! Explore the basic chemistry behind making cheese in this hands on activity.
What are the effects of acid rain on rocks?
Hands-on Activities
Learn about the chemical reaction that happens between acid rain and limestone.
What happens when acids and bases mix?
Hands-on Activities
Learn about acid-base reactions. Make you own pH indicator and test it with different solutions.
Is there a difference between baking powder and baking soda?
Hands-on Activities
Explore acid-base chemical reactions that really get things bubbling in the kitchen!
How can I stop bananas from turning brown?
Hands-on Activities
Explore the chemistry behind why bananas turn brown. Can chemistry also help prevent this?
How can I write secret messages?
Hands-on Activities
Learn how you can write and reveal secret messages in this hands-on chemistry activity.
How can you make popcorn kernels dance?
Hands-on Activities
Get your popcorn kernels dancing with this uplifting chemical reaction.
How do I construct a terrarium?
Hands-on Activities
You can make your own terrarium for growing plants!
How does rain become acidic?
Hands-on Activities
Learn how to make a pH indicator and test water samples.