Learners examine graphs and read that the heat of fusion is the heat energy absorbed by one mole of solid as it is converted to liquid, while the heat of vaporization is the heat energy absorbed by one mole of liquid as it is converted to gas.

In this interactive object, learners calculate the amount of heat evolved or absorbed in chemical reactions. Four practice problems are provided.

Learners use the coefficients in a balanced equation to develop the mole ratios of reactants and products involved in the reaction. Five interactive examples illustrate the method, and students test their knowledge by working four problems.

Students examine atomic structure and the octet rule.

Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.

In this animated object, learners examine the formulas used to convert peak, RMS, average, and peak-to-peak AC voltages. A brief quiz completes the activity.

Learners complete a matching exercise as a quiz or as a review of state laws and rules pertaining to barbers and cosmetologists.

In this interactive object, the learner views photos of the interior of a salon and identifies areas that violate Wisconsin safety and sanitation regulations.

In this animated object, learners examine why and when the Kelvin scale is used. A brief quiz completes the activity.

Essential Chemistry- Density and CER

Practice your vocabulary and converting temperatures.

Mean, median, mode, and range

This game will help you remember the parts of a push mower.