Learners examine the periodic table to identify metallic elements that have either fixed or variable oxidation states.

In this screencast we are introduced to the lab equipment used to contain and dispense chemicals.

Learners examine how five or six groups of electrons around a central atom cause the shape of the molecule to be trigonal bipyramidal, seesaw, T-shaped, linear, octahedral, square pyramidal, or square planar. Seven examples and three interactive questions are provided in this animated activity.

In this animated object, learners examine the formation of peptide bonds through dehydration synthesis.

All about photosynthesis.