Khan Academy
Khan Academy: The Periodic Table, Electron Shells, and Orbitals
The Bohr model and atomic orbitals. Using an element's position in the periodic table to predict its properties, electron configuration, and reactivity.
CK-12 Foundation
Ck 12: Chemistry: Mendeleev's Periodic Table
[Free Registration/Login may be required to access all resource tools.] Describes the development of Mendeleev's periodic table.
CK-12 Foundation
Ck 12: Chemistry: Modern Periodic Table
[Free Registration/Login may be required to access all resource tools.] Explains the organization of modern periodic table.
CK-12 Foundation
Ck 12: Chemistry: Early History of the Periodic Table
[Free Registration/Login may be required to access all resource tools.] Describes the history of the periodic table, the Dobereiner triads, and the Newland octaves.
CK-12 Foundation
Ck 12: Chemistry: Blocks of the Periodic Table
[Free Registration/Login may be required to access all resource tools.] Covers blocks, periods, and the periodic table.
Scholastic
Scholastic: Study Jams! Science: Matter: Elements & Compounds
A video and a short quiz on elements, how they combine through chemical reactions to make compounds, and how to write the chemical formulas for water and salt.
CK-12 Foundation
Ck 12: Chemistry: Periodic Law
[Free Registration/Login may be required to access all resource tools.] A tutorial that describes the origin of the periodic law.
Sophia Learning
Sophia: Modern Periodic Law: Lesson 2
This lesson will define the Modern Period Law. It is 2 of 3 in the series titled "Modern Periodic Law."
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...
Science Struck
Science Struck: Properties and Characteristics of Chalcogens
Describes the chemical and physical properties of the chalcogen group of elements, also known as the oxygen group.
Science Struck
Science Struck: Periodic Table With Atomic Mass
Explains how Dmitri Mendeleev created the periodic table of elements, how it was organized, the changes made by Henry Moseley in 1931, some characteristics of element groups, and what the atomic mass, number, and abbreviation each...
Science Struck
Science Struck: 26 Funny Periodic Table Puns
A humorous collection of periodic table puns.
Science Struck
Science Struck: The Complete Periodic Table With Charges
Provides an explanation of the periodic table of elements and how to read it.
Science Struck
Science Struck: History of the Periodic Table
The modern periodic table has evolved over a long period of time as new discoveries have been made. Learn about the contributions made by different scientists to its development.
Vision Learning
Visionlearning: Atomic and Ionic Structure of First 12 Elements
Analyze the electron configuration of the of the first twelve elements on the Periodic Table.
Royal Society of Chemistry
Royal Society of Chemistry: Periodic Table/helium
A great source of information on helium. Exceptionally thorough and well written.
The Franklin Institute
Franklin Institute: Introduction to Matter
A resource provided to Grade 8 teachers to address the School District of Philadelphia's Core Curriculum on the topic of Matter. It covers properties and states of matter, elements, compounds, mixtures, atoms, and the periodic table....
Environmental Chemistry
Environmental chemistry.com: Periodic Table Samarium
As the name of this site implies, this is a huge source of elemental information. You are likely to find whatever you need to know about elements here.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Sodium
As the name of this site implies, this is a huge source of elemental information. You are likely to find whatever you need to know about elements here.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Strontium
As the name of this site implies, this is a huge source of elemental information. You are likely to find whatever you need to know about elements here.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Neodymium
EnvironmentalChemistry.com offers a thorough site all about the element neodymium.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Phosphorus
Excellent source of information on phosphorus including its physical and chemical properties. Highly recommended.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Potassium
As the name of this site implies, this is a huge reference site for elemental information. Whether you are looking for properties or isotopes, this site probably has what you need. Images of structure and electron energy level can be...
Thomas Jefferson National Accelerator Facility
Jefferson Lab: It's Elemental the Element Einsteinium
An overview of the element Einsteinium. Lists basic periodic table information along with its history and uses.