Learners calculate gas density from the standard molar volume and observe how the density increases with the increasing molecular weight of the gas.

In this brief object, learners examine the direct relationship between the volume of a gas sample and the number of moles of gas. A problem is presented so students can test their knowledge of Avogadro's Law.

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.

Boyle's Law states that gas volume varies inversely with the pressure at constant temperature and is described by the equation PV = constant. An example of a sample of gas at two conditions of P and V is used to illustrate the law.

In this animated and interactive object, learners examine ventilation, external and internal respiration, and gas transport.

Students read an explanation of the values used for arterial blood gas analysis.

Learners examine the theory of operation for a combustible gas detector. A brief quiz completes the activity.

Learners study how a hydrocarbon gas sensor operates and why it is used. A short quiz completes the activity.

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

In this animated object, learners examine the mechanisms for gas exchange among the lungs, blood, and tissues.

Explore what passive transport diffusion is and how it moves water through a membrane.

Explore what passive transport osmosis is and how it moves water through a semipermeable membrane.

Learners combine Boyle's Law and Charles's Law to solve for the pressure, volume, and temperature of a gas sample under two sets of conditions.

The learner will understand proper safe handling and installation procedures for shielding gas cylinders.

In this animated object, learners view molecules as they collide and move between two different solutions. They also observe what happens when the temperature of the solutions is raised or lowered.

In this animated activity, learners compare the van der Waals equation with the Ideal Gas Law.

In this animated object, learners examine processes that do not use ATP directly including hydrostatic pressure and facilitated diffusion with carrier proteins.

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.

In this interactive object, the learner reads an explanation of how various shielding gases are used in GMAW and FCAW. An exercise completes the activity.

In this animated activity, learners examine what gases are composed of and how their particles interact. They also consider several assumptions that form the basis for the Kinetic Theory of Gases.