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.
BBC
Bbc: Gcse Bitesize Science: Different Substances
A short quiz over the general topics of atomic structure of different substances and bonding properties. The quiz gives immediate feedback over with explanation for the correct answer choice.
Other
Beautiful Chemistry: Beautiful Structures: Quasicrystals
An interactive display of quasicrystals allows students to study the inner components and molecular make-up of these structures. Since the discovery of quasicrystals, a lot of efforts have been put on finding the locations of atoms...
Museum of Science
The Atom's Family: The Phantom's Portrait Parlor
In this activity, students investigate the atomic world by attempting to reduce paper to the size of an atom. Although students won't be able to cut the paper that small, they will gain a better understanding of how small the atom is.