Evidence of Chemical Change
Learn how to tell if a chemical reaction has taken place.
Introduction to the Periodic Table of the Elements
Learn about the elements of the periodic table and how they are organized.
Describing and Classifying Matter
Learn about the physical and chemical properties of matter.
Introduction to the Particle Theory of Matter
Learn about how the Particle Theory helps us understand matter.
Query a Career Profile
Students will explore career profiles and relate them to what they are learning in science class.
What Causes Hot Things to Glow?
Getting electrons excited by heat can cause certain materials to give off visible light when heated - like filaments in light bulbs.
Understanding the Nitrogen Cycle
What is the nitrogen cycle? How do human activities such as using fertilizer affect the nitrogen cycle? How can this cause greenhouse gases?
The Newest Elements on the Periodic Table
The periodic table was last updated in 2016 with four new chemical elements. What is a chemical element? What is the atomic structure of the newest chemical elements? How did they get their names?
The Life and Death of Stars
The life and death of stars form the chemical elements that make up Earth, making stars critical to life as we know it.
The Genius of Mendeleev's Table
Dmitri Mendeleev’s version of the periodic table was brilliant - find out why!
Na Na Na Na (Hey Hey Hey) Sodium!
Sodium is a useful chemical element. You consume it as table salt regularly. Learn about salt mining, sodium uses, and what problems too much sodium can cause.
The History and Uses of Hydrogen
Hydrogen’s tendency towards combustion is what makes it both a dangerous chemical element and a useful energy source.