Chapter 10 - Chemistry

physical_science

 

 

Unit E - Matter

  • Chapter 10 - Chemistry

How are chemical reactions a part of your daily life?

Going Going Gone

Going Going Gone

Today, species are becoming extinct—disappearing from our planet—at a faster rate than ever before. What's behind this increase, and what can be done to slow or stop it? 

That's Heavy!

Hands-on Activity

That's Heavy!

This "heavy" experiment allows students to discover that salt water sinks in fresh water.

Test Density with a Supersaturated Solution

Test Density with a Supersaturated Solution

You know that oil and water don't mix, but what about salt water and fresh water? Find out firsthand with this kid-friendly experiment that examines both salinity and density. 

An Essential Mineral

Young Naturalist Awards Essay

An Essential Mineral

At 1,292 feet (394 meters) below sea level, the Dead Sea is the lowest point on Earth. But it's not the depth but the sea's saltiness that buoyed the imagination of this seventh-grader from New York.

Atomic Mobile

Atomic Mobile

All living things contain carbon, the sixth element on the Periodic Table. Make a mobile of this elemental element with scissors, wire, pipe cleaners, and clay.

Light Quest

Light Quest

Particles and waves, reflection and refraction—how enlightened are you about the subject of light? Find out with Light Quest!, a kid-friendly trivia game.

Einstein

Einstein

Peer at the world through the eyes of Einstein—a scientist who saw a beam of light and imagined riding it, a self-proclaimed "citizen of the world" who spoke out on global issues from pacifism to racism.

November 15, 2002 - January 1, 2003

How the Sun Works

Activity

How the Sun Works

Talk about a long-term power source. For billions and billions of years, the Sun has been giving off energy that equals 4 x 1026 watts. What keeps the Sun burning so bright?