[Free Registration/Login Required] Students explore how percent abundances of different isotopes affect the average atomic mass for that given element. Students form connections between the average atomic mass and a person's body mass....

[Free Registration/Login may be required to access all resource tools.] Covers definition of atomic mass and calculations of atomic mass.

[Free Registration/Login may be required to access all resource tools.] Definition of atomic mass unit is discussed.

This activity allows young scholars to gain an understanding of the relationship between the mass and relative abundance of an isotope and its effect on the average atomic mass of the element. Students will be given a random sample of...

[Free Registration/Login may be required to access all resource tools.] Definitions of atomic number and mass number.

[Free Registration/Login may be required to access all resource tools.] Definitions of atomic number and mass number.

[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will use molar mass to make conversions between mass and moles of a substance and they will also use the mole road map to...

This slide and audio book shows how to relate mass to a number of particles by using many formulas, examples, and real life scenarios. View the weighted average calculations, Avogadro's number, the atomic mass of carbon, and molar mass.

In this activity, students apply what they have learned about weighted averages, isotopes, and systems of equations to a new situation - coins in a sealed container. They learn some historical information regarding the composition of...

[Free Registration/Login Required] Put the elements in the correct order on the table by using the information given in each of the element squares.

Determine the mass of two different isotopes of an element based on their deflection by a magnetic field.

Explains the basics of atomic structure, from simple definitions to information about quantum theory. Accurate and helpful basics whether or not you need the more advanced information.

Students explore the concept of the mole as a measure of quantity. They build spreadsheets that allow them to convert between moles, grams, and atomic mass units for given quantities of everyday items, elements, and simple chemical...

[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will identify three methods for measuring the amount of matter in a sample. They will define the mole and its relationship...

This site provides an overview of elements and atoms, the building blocks of matter.

An introduction to the mole, a unit of measurement that quantifies atoms and molecules.

[Free Registration/Login Required] Uncover the relationship between pressure, force, and contact area in the context of a fire truck. Play with vehicle mass, number of tires, and guage pressure with this simulation to see what...

Engaging and very informative article that explains what elements are, some of their history, how they are represented, the categories of elements, the periodic table, and how they are structured and classified.

Review atoms with this slideshow. You can choose to listen to the review or read the accompanying text. At the end, play the game to review the basics of atoms that you have just learned about. You may play the game as many times as...

This site has information about the bombings of Nagasaki and Hiroshima. The information is detailed and in depth. Contains many links to related sites.

Learn about radioactivity, the different types of radioactive decay, isotopes, and half-life of a radioactive element. Includes a long chart listing radioactive elements, atomic number and mass number, decay type, and length of half-life.

This site has an interactive component that allows you to change the mass, number of electrons and the length of the box and see how it affects the energy levels. Requires Java.

[Free Registration/Login may be required to access all resource tools.] Students read about and explore video clips, diagrams, and example problems using the Ideal Gas Law.

[Free Registration/Login Required] Learn what makes each element unique by building the mystery atoms in the periodic table.