A history and description of the modern periodic table, including its early origins, many contributors and later additions.

Geared towards helping Dartmouth College students starting General Chemistry Laboratory, this site offers resources important for anyone in the lab. Learn why you should keep a lab notebook and how to keep yourself and others safe. This...

Explore the concept of electronegativity and how it trends across the periodic table of elements. The author uses simple, humorous drawings to help with understanding.

Find out about the life and work of Dmitri Mendeleev, and learn how he discovered what is now known as the Periodic Table of Elements.

Play the Obstacles game to learn about the elements in the Period Table. Get a question right about one element and you will be able to click the Data button to get information about other elements, enhancing your chances of getting...

A great source of information on helium. Exceptionally thorough and well written.

A site containing a good deal of elemental information. Information on each element includes atomic number, atomic mass, melting point, boiling point, density, isotopes and more.

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.

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.

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.

[Free Registration/Login Required] This flipchart helps students learn about the periodic trend of Atomic Radius of Elements across a Period and down a Group.

[Free Registration/Login Required] This flipchart examines the periodic table and guides students through the process of identifying the characteristics of metals.

The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. The famous element gold is the number 79 on the periodic table. [9:04]

Explains the theoretical basis of electron configuration and presents a table of all 118 elements with their symbols, number of electrons, and electron configurations.

The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about niobium, a particularly friendly element. [9:27]

The team at Periodicvideos has created a TED-Ed Lesson for every element of the periodic table. This one is about the liquid metal mercury, element number 80. [5:13]

A short but nice description of nitrogen's uses and properties. Discusses the history of nitrogen and its characteristics.

Explain how elements on the periodic table are arranged, and explain the relationships within each row and column. This lesson is 2 of 4 in the series titled "Periodic Table."

Learn about the different groups of elements that make up the periodic table and some interesting facts about it.

A humorous collection of periodic table puns.

This lesson will explore the layout of the periodic table by defining different groups and categories of elements. It is 2 of 3 in the series titled "Periodic Table Organization."

This lesson will explore the layout of the periodic table by defining different groups and categories of elements. It is 3 of 3 in the series titled "Periodic Table Organization."

This lesson will explore the layout of the periodic table by defining different groups and categories of elements. It is 1 of 3 in the series titled "Periodic Table Organization."

This online resource is for information on the 16th element of the Periodic Table--Sulfur--can be found here. The site lists scientific information such as atomic weight, atomic number, melting/boiling point, and more. There is also a...