Bold boxes present parts of the periodic table, with some of the contents conveniently missing. Beginning chemists fill in the blanks, which may include the atomic number, atomic mass, atomic symbol, or element name. Beneath each box...

Learners are able to discuss the difference between a proton, a neutron and an electron. They also can explain the difference between an ionic and a covalent bond. Students know the main structure of atoms and molecules. Student are able...

In this chemistry worksheet, students use the Internet to research the elements in the Periodic Table to locate the number of proton, neutrons, and electrons. They also draw pictures that illustrate one or more uses for their elements.

This is a very detailed site containing information on several sub-atomic particles including the Hadron.

This unit covers introductory concepts of mixtures and solutions. Students think about how mixtures and solutions, and atoms and molecules can influence new technologies developed by engineers. The first lesson explores the fundamentals...

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."

This lesson will introduce isotopes, and explain how they differ from other elements. It will also show that some isotopes are unstable and emit particles and/or radiation. It is 5 of 9 in the series titled "Isotopes."