Learners follow a four-step process to determine the empirical formula of a compound from the masses of its constituent elements. The molecular formula is determined in a fifth step using the molecular weight of the compound.

Learners examine how the boiling point increases with increasing pressure. An example from industry is given.

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.

In this animated and interactive object, learners examine the inverse proportionality of wavelength and frequency and their relationship to the speed of light.

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.

Managing Fever in children

Mean, median, mode, and range

The Periodic Table game helps you improve and learn knowledge based on the elements of the periodic table.

To help you understand the periodic table