The nonmetal elements occupy the upper righthand corner of the periodic table. This is a list of the nonmetals in order of increasing atomic number.| Science Notes and Projects
Get examples of pure substances and impure substances and learn how to classify materials according to their chemical composition.| Science Notes and Projects
This is a list of all of the diatomic elements and their common properties. Simple mnemonics for remembering them are included.| Science Notes and Projects
Get the compound definition in chemistry. See examples of compounds and learn how they differ from molecules.| Science Notes and Projects
Get the definition of electronegativity in chemistry. Learn about the trend of electronegativity on the periodic table of the elements.| Science Notes and Projects
The atom is the unit of matter that identifies a chemical element. Here are 10 interesting atom facts for education and entertainment.| Science Notes and Projects