This lesson will illustrate that an atom is mostly empty space and has a positively charged, massive core (containing both protons and neutrons called the nucleus) surrounded by negatively charged electrons. It is 2 of 3 in the series...

Entry explores the process of beta decay which occurs when, in a nucleus with too many protons or too many neutrons, one of the protons or neutrons is transformed into the other.

Wikipedia provides the definition of the term, "Atomic number," a term used in chemistry and physics to represent the number of protons in the nucleus of an atom.

Kids learn more about the science of the atom. Electrons, neutrons, and protons make up the smallest bits of matter.

[Free Registration/Login Required] In this flipchart students determine the number of protons, neutrons, and electrons of elements essential to life. They use Activotes to check knowledge gained. Students create a Bohr Model.

Describes the structure of an atom and the characteristics of the electrons, neutrons, and protons inside it. Includes some interesting facts about atoms.

An atom is made of three parts - protons, neutrons, and electrons. Here you can explore these different parts.

A short matching quiz on basic terminology related to atomic structure. Answers provided.

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

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!

Learn the basics of acids, bases, proton concentration, the pH scale, and buffers in this article.

Use the virtual lab to determine the pKa of a protein then create a buffer solution with a specific concentration ratio of the protein in its protonated/ unprotonated form.

Students create models of atoms then compare the various aspects of the atoms including; relative size, charge, positions of subatomic particles, and identity of the atom based on proton, neutron, and electrons with the class.

Play by matching an element's name to its symbol or supply the missing name for an element when presented with its symbol. Includes a tutorial so that you can review the symbols for elements before you play.

Explore the Large Hadron Collider (LHC) and how the U.S. Department of Energy and National Science Foundation have collaborated with this huge project and related experiments. You can find facts about the LHC, browse a bank of high...

The third paragraph pinpoints the importance of hyperons in particle research. Hyperons and neutrinos share characteristics of the weak force. Complex stuff, but the real deal. Parts of this report may be very useful. Many photos, slow...

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

A lovely biographical piece about Ernest Rutherford. A number of personal notes, along with extensive information about the physics work he did. Nice quote at the end.

[Free Registration/Login may be required to access all resource tools.] Students learn about the important discoveries of subatomic particles, and how they led to our current understanding of the atom.

This interactive unit will take students up close and personal with the nuclei of atoms as they discover some of their more intimate process. These will include radioactive decay, nuclear fission, and nuclear fusion.

This Nobel website on the life and scientific work of Robert A. Millikan includes a biography, images, and internet resources for further reading and research. Also included are the 1923 "Presentation Speech" which praised Millikan's...

An interactive website where students learn about the basics of an atom, periodic tables organization, and the structure and properties of matter. Module includes an introduction and five lessons that are followed by a quiz and an...

A fun way to learn about the periodic table! This interactive table allows students to investigate the basic information of an element as well as explore group and family characteristics.

Introduces learners to atomic models of the past and present, focusing on the orbital model and an explanation of its basis. Learners then have the opportunity to "make an atom" and contrast it with an ion, followed by an isotope. The...