BBC
Bbc: Gcse Bitesize Science: Atomic Structure and Bonding Test
A ten-question quiz on the structure of an atom and on atomic bonds.
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.
State University of New York
State University of New York: Determining Electron Pair Geometry
The electron-pair geometry of a molecule or ion depends on the number of structurally significant electron pairs in the central atom. Here students are asked to count the number of lone electron pairs and bonded atoms on the central...