The basics
of atoms, moles, formulas, equations, and nomenclature
chem1 virtual textbook
a reference text for General Chemistry
Stephen Lower
Simon Fraser University
The chapters in this unit are absolutely essential for anyone embarking on the serious study of Chemistry. The material covered here will be needed in virtually every topic you will encounter in the remainder of your first-year course, as well as in subsequent Chemistry courses -- so you might as well master it now!
The Chem1 Virtual Textbook is a resource for General Chemistry aimed mainly at the first-year university level. It offers a more comprehensive, organized, and measured approach than is found in most standard textbooks. It should also be accessible to advanced high-school courses, and helpful as review material for students in more advanced courses in chemistry, biology, geology, and engineering.
To access the desired page, click one of the lesson titles immediately below; you can also go directly to any sub-section within a lesson by clicking on a smaller heading.
1- Basic atomics: elements, atoms, and the nucleus
2- All about Avogadro's number and the mole
4-Chemical equations and stoichiometry
Some useful references
Online book chapters
... from John Hutchinson's Concept Development Studies in Chemistry:
Khan Academy videos
Elements and Atoms - Introduction to the Atom - Molecular and Empirical Formulas - The Mole and Avogadro's Number - Formula from Mass Composition - Another Mass Composition Problem - Stoichiometry - Stoichiometry Limiting Reagent
Web sites
Video lectures
UC-Berkeley Chemistry - choose the first few lectures of Chemistry 1A for any available semester.
Simon Fraser University
Burnaby Mountain campus,
looking North