Chemistry Lesson 1
Atomic and Molecular Structure (Grades 9-12)

Instruction 1-1

Connection Among the Location in the Table, the Atomic Number, and Mass

http://www.colorado.edu/physics/2000/periodic_table/atomic_number.html
(Atomic number and the Periodic Table)

http://www.colorado.edu/physics/2000/periodic_table/atomic_weight.html
(Atomic mass)

http://www.chem4kids.com/files/elem_pertable.html

http://members.aol.com/profchm/periodic.html

http://www.chemicalelements.com/

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