Unit C: Matter as Solutions, Acids and Bases

Learn about the four main types of chemical reactions.

This week's episodes and hands-on activity explore some cool chemistry!

Carbon dioxide is an important part of the air on Earth and in space. What is carbon dioxide? How is it measured? How can it affect us mentally and physically?

Has your fresh juicy apple turned an unsightly brown? Learn about the redox reaction behind the transformation.

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?

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?

Oceans absorb the greatest amount of solar radiation on Earth. Ocean warming can lead to glaciers melting and ocean acidification.

It starts with curds and whey! Explore the basic chemistry behind making cheese in this hands on activity.

Learn about the chemical reaction that happens between acid rain and limestone.

Learn about acid-base reactions. Make you own pH indicator and test it with different solutions.

Learn about the organic compounds that make up lipstick as well as about some of the chemistry that goes into this popular cosmetic.

Explore acid-base chemical reactions that really get things bubbling in the kitchen!

Explore the chemistry behind why bananas turn brown. Can chemistry also help prevent this?

Learn how you can write and reveal secret messages in this hands-on chemistry activity.

Get your popcorn kernels dancing with this uplifting chemical reaction.