University of Oxford (UK)
University of Oxford: Solid State Chemistry: Doping of Semiconductors
Discover how the doping of semiconductors is achieved by introducing atoms with more or fewer electrons than the parent element.
Web Elements
Web Elements Periodic Table: Atomic Radius
This Webelements website provides a short but detailed definition of atomic radius. Includes links to other chemistry sites.
American Chemical Society
American Chemical Society: Hompage
ChemCenter, available from the American Chemical Society, provides chemistry news, reference sources and other public services.
Simon Fraser University
Chem1 Virtual Textbook: The Aufbau Rules
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses atomic electron configurations. Specifically, the Aufbau rules are discussed with information on energies of...
Mocomi & Anibrain Digital Technologies
Mocomi: Molecules
When two or more atoms combine they give rise to a molecule. A molecule can be made up of many atoms of the same element. There are 112 elements known to man, so can you imagine the different permutations and combinations of molecules...
Simon Fraser University
Chem1 Virtual Textbook: The Limits of Classical Physics
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the limits associated with classical physics. Topics covered include light and heat with additional information...
Ducksters
Ducksters: Chemistry for Kids: Elements: Mercury
Kids learn about the element mercury and its chemistry including atomic weight, atom, uses, sources, name, and discovery. Plus properties and characteristics of mercury.
American Chemical Society
Middle School Chemistry: Finding Volume: Water Displacement Method
Students use the water-displacement method to find the volume of different rods that all have the same mass.
Ducksters
Ducksters: Chemistry for Kids: Elements: Neon
Discover the properties and characteristics of neon on this site.
Ducksters
Ducksters: Chemistry for Kids: Chemical Mixtures
Explore all about chemical mixtures on this site including solutions, alloys, suspensions, colloids, dissolving, examples, and facts.
Other
Chemistry 101 Notes: Isotopes and Atomic Symbols
These notes from a Chemistry 101 class at Indiana University Northwest provide a simple description of atomic symbols and two examples of how to use those symbols in isotope notation.
Soft Schools
Soft Schools: Periodic Table
This interactive periodic table of elements allows students to click on each element, and read essential information about that element. Chemical elements are also listed alphabetically for quick reference.
Vision Learning
Visionlearning: The Illustrated Periodic Table
Interactive concept animation shows the atomic number, weight, and structure of the first eleven elements of the Periodic Table of Elements.
CK-12 Foundation
Ck 12: Electron Configuration and the Periodic Table
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will sse the Periodic Table to identify and explain the properties of chemical families, including alkali metals, alkaline...
Curated OER
Periodic Table Element Families
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.
Curated OER
Shell Model of the Atom
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.
Curated OER
Chem 1: The Shell Model of the Atom
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.
Curated OER
Core Charge of an Atom
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses the properties of the atoms individually in relation to the main group elements of the Periodic Table.
Simon Fraser University
Chem1 Virtual Textbook: Electronegativity
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site discusses shared chemical bonds between two elements resulting in electronegative and electropositive outcomes.
OpenStax
Open Stax: Organic Compounds Essential to Human Functioning
Learn here about organic compounds, groups of carbon atoms covalently bonded to hydrogen, usually oxygen, and often other elements as well, and how they are essential to human functioning.
Simon Fraser University
Chem1 Virtual Textbook: Organization of the Periodic Table
Acting as a subtopic of the General Chemistry Virtual Textbook's section on Atoms and the Periodic Table, this site focuses specifically on the Periodic Table of Elements with information on the table's organization methods along with...
Crescent Public Schools
The Internet Science Room: The Periodic Table and Atomic Theory of Matter
A chemistry tutorial highlighting historical development of the atomic theory of matter and the periodic table of elements.
Wikimedia
Wikipedia: Atomic Number
Wikipedia provides the definition of the term, "Atomic number," a term used in chemistry and physics to represent the number of protons in the nucleus of an atom.
CK-12 Foundation
Ck 12: Physical Science: Valence Electrons
[Free Registration/Login may be required to access all resource tools.] Valence electrons, their variation in the periodic table and relation to reactivity and electrical conductivity of elements.