Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element.

Are all atoms of an element the same? How can you tell one isotope from another? Use the sim to learn about isotopes and how abundance relates to the average atomic mass of an element.

[Free Registration/Login may be required to access all resource tools.] Students explain the workings of a mass spectrometer, and describe how this device is used to determine average atomic mass.

[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will be asked to define atomic number, mass number and understand how isotopes differ from one another. They will be able...

Tutorial explains isotopes, atomic weight and how isotopes can be detected using mass spectrometry. Examples are given.

A tutorial describing average atomic mass and how it is calculated.

This activity allows learners 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 the...

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] 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....

Learn the fundamental properties of atoms in this article. Understand the definition of atomic number, atomic mass, and isotopes. [6 min, 50 sec]

Students investigate the structure and parts of the atom, and learn about atomic mass and atomic number. They also explore the differences among solids, liquids, gases, and plasma.

Students explore the periodic table and learn the basic information given for elements: the name, symbol, atomic number, and atomic mass for each element.

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

This overview of isotopes explores where isotopes come from and returning an atom to its normal state.

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.

In this online biology textbook, learn about atoms and molecules as they relate to life. Find out about topics such as electrons and energy, chemical bonding, and chemical reactions.

This lesson will define an isotope and demonstrate how to determine the average atomic mass of an element. It is 2 of 9 in the series titled "Isotopes."

This lesson will define an isotope and demonstrate how to determine the average atomic mass of an element. It is 8 of 9 in the series titled "Isotopes."

This lesson will define an isotope and demonstrate how to determine the average atomic mass of an element. It is 4 of 9 in the series titled "Isotopes."

Brief explanations of how to determine how many protons, neutrons, and electrons are in an element.

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.

From the Science Teacher's Resource Center. A data sheet tabulating the many differences between nuclear fission and nuclear fusion. Technical information about the nuclear reactions, the mass defect, isotope masses, etc. is included.

Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!

This subtable lists and describes the six alkali metals of the periodic table of Elements. Related links are provided.