Learners examine how vapor pressure is calculated. The vapor pressure of a liquid increases with increasing temperature. If the heat of vaporization and the vapor pressure at one temperature are known, the vapor pressure at a second temperature can be calculated.

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

In this animated object, learners examine neutral fats, phospholipids, and cholesterol. The molecular formula and general function for each are shown.

Learners view illustrations showing the direct dependence of the volume of a gas on temperature and consider the relationship between the Kelvin and Celsius temperature scales.

Learners complete an exercise to match chemical formulas with the names of binary compounds, tertiary compounds, and ions.

Chytrids, as members of this group are known, are found everywhere. In this animated learning object, students examine the role of chytrids and their impact on the environment.

Learners observe that the volume of one mole of any gas is 22.4 L at standard temperature and pressure. An illustration shows that only the mass of the molar volume differs with the identity of the gas.

In this interactive object, learners use the ideal gas law to solve a practice problem.

Explore what proteins are, their structure, and their functions.

Students review the functions of the keys on the Starrett HB400 Optical Comparator controller.

The purpose of this learning object is to introduce the dental hygienist to the process of documenting a patient's dentition.

Learners assign oxidation numbers to atoms in neutral compounds and in polyatomic ions. Six examples are worked through in detail, and three problems are provided.

In this animated object, students observe how ATP energy is used to move substances across the cell membrane from an area of lower concentration to an area of higher concentration and when something too large needs to get in or out of a cell.

Learners examine what defines a fungus and read how fungi differ from animals and plants.

In this screencast, learners examine the bones of the appendicular skeleton.

In this animated object, learners are introduced to the structure and function of animal cell organelles.

In this animated object, learners examine the chemistry behind table salt.

Learners examine how chemists use moles to "count" atoms by weight. Examples are given.

In this animated object, learners examine how gas volume varies directly with absolute temperature (K at constant pressure). An example of a sample of gas at two conditions of volume and temperature is used to illustrate the law.

In this animated object, learners examine the eight cranial bones, the fourteen facial bones, and the ribs.