In this animated object, learners view hydrogen and hydroxide ions in a solution. A brief quiz on the basic principles of the term pH completes the activity.

In this screencast, we'll view the 10 major bones of the skull and read a description of each bone.

In this animated object, learners examine how the sensory, motor, mixed, and reflex nerves work in the human body.

In this animated object, learners examine the properties of the hydrogen bond and how the bond changes when hair is shampooed or styled.

In this animated object, learners examine the properties of the peptide bond and how the bond relates to the structure of hair.

In this animated object, learners examine the properties of the hydrogen bond and how the bond changes when hair is shampooed or styled.

In this interactive object, learners examine standard and metric thread specifications used in engineering drawings. In a brief quiz, they identify various internal and external thread representations.

Learners examine the symbols and values that control surface roughness, waviness, and lay. A brief quiz completes the object.

Learners follow a step-by-step explanation of how to test fuses and circuit interrupting devices.

vocabulary

Stoichiometry and Mixtures terms

vocabulary

Differentiate Pure Substances and Mixtures