Test Your Knowledge
We need calcium for strong bones. But what does calcium have to do with seashells, chalk, and limestone?
Find examples of dissolving in your body, in a cave, and underwater.
- Food Science
There’s chemistry in your kitchen. Learn about the nutrients in some of your favorite foods.
Find out ways friction can be a friend or a foe.
Compare different plants and learn which part of each plant is best for eating.
- Smell and Taste
Which animals have specialized senses of taste and smell? Take this quiz to find out.
- Sound and Hearing
What is sound? How can we hear it? Learn more about what sound is and how our bodies detect it.
Explore the many ways that water is essential to life on planet earth.