National Institute of Open Schooling
p-Block Elements and Their Compounds – II
Ozone, made of three bonded oxygen atoms, is found 15-30 km above Earth, has a strong smell, is blue, and blocks sunlight from hitting the surface of Earth. The 22nd lesson in a series of 36 specifically focuses on the important elements...
National Institute of Open Schooling
Chemical Arithmetics
Substances with the same empirical and molecular formula must be differentiated by their structural formula. Part two in a series of 36 has pupils using chemical formulas to calculate how much of a compound is present in a given...
National Institute of Open Schooling
Chemical Bonding
Name is Bond, covalent bond. Through readings and answering questions, classes explore the different types of chemical bonds, their characteristics, valence shell electron pair repulsion theory, and atomic orbitals.
National Institutes of Health
Ncbi: The Molecular Biology of the Cell: The Chemical Components of a Cell
Advanced chapter of the book "The Molecular Biology of the Cell" describes and provides illustrations of our most current understanding of the chemical makeup of cells and their components. Explains in detail how electron activity keeps...
Frostburg State University
General Chemistry Online: Ionic and Molecular Compounds
Provides a good outline of the concepts involved in ionic and covalent bonding, with links to definition of terms. Features a list of common molecular compounds and a chart that compares ionic and molecular compounds.