CK-12 Foundation
Ck 12: Isotopes and 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...
City University of New York
John Jay College of Criminal Justice: Atomic Structure
Resource shows the relationships bewteen terms such as atomic number, protons, and isotopes. Simple pictures of atoms help.
Georgia Department of Education
Ga Virtual Learning: Physical Science: Matter and the Atom
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.
Environmental Chemistry
Environmental chemistry.com: Anatomy of an Atom
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.
Sophia Learning
Sophia: Isotopes: Lesson 9
This lesson will define an isotope and explain what happens if the number of neutrons in an atom changes. It is 9 of 9 in the series titled "Isotopes."
Sophia Learning
Sophia: Isotopes: Lesson 1
This lesson will define an isotope and explain what happens if the number of neutrons in an atom changes. It is 1 of 9 in the series titled "Isotopes."
Environmental Chemistry
Environmental chemistry.com: Periodic Table Krypton
An exceptionally thorough resource with an amazing set of data on krypton, it chemical and physical properties, its electron configuration and its isotopes, among other things.
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...
Environmental Chemistry
Environmental chemistry.com: Tin
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...
Other
Environmental Yellow Pages: Elemental Einsteinium
The history, isotopes, and properties of the element Einsteinium are discussed on this site. Also listed is the atomic weight, atomic number, atomic symbol, and electron configuration.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Holmium
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...
Environmental Chemistry
Environmental chemistry.com: Periodic Table Hassium
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...
Other
Chemical elements.com/scandium
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.
Other
Web ref.org: Arsenic
Some basic information along with good information on uses and health related facts on arsenic.
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 Neon
A great reference for information on neon. This is as thorough of a site as you are likely to find.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Nickel
An incredibly thorough source for information on nickel.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Nitrogen
An exceptionally detailed and helpful resource for all sorts of information on nitrogen.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Oxygen
An incredibly thorough site with a wealth of basic information on oxygen. Highly recommended.
Environmental Chemistry
Environmental chemistry.com: Periodic Table: Osmium
A site that has it all. This is probably the best place to start looking for information or data on osmium.
Environmental Chemistry
Environmental chemistry.com: Periodic Table Palladium
An oustanding source of information for all sorts of general information on palladium.
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 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.