CK-12 Foundation
Ck 12: Physical Science for Middle School
This digital textbook covers core physical science concepts and includes interactive features, real world examples, and videos.
Ducksters
Ducksters: Chemistry for Kids: Elements: Halogens
Explore the halogens of the periodic table. Learn about which elements are in this group and the properties, similarities, and other facts.
Ducksters
Ducksters: Chemistry for Kids: Elements: The Noble Gases
Study the noble gases on this site. Learn about where to find them on the periodic table, what elements are in this group, and other facts.
Ducksters
Ducksters: Chemistry for Kids: Elements: Alkali Metals
On this site, investigate the alkali metals of the periodic table. Find out which elements are in this group, properties, similarities, and other facts.