Gas Laws

Investigate, apply, predict and explain the relationships involving the pressure, volume, temperature, and number of moles of gas.


What Is Pressure?

Pressure—we all feel it! But what is it? In the case of the air all around us, pressure is a force, a remarkably strong force!

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The Power of Pressure

Powerful physical science demonstrations reveal that pressure is a force to be reckoned with!

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Introduction to Gas Laws

Discover the gas laws and increase students’ conceptual understanding of the behavior of gases using observation and common examples.

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Boyle's Law

Investigate the qualitative and quantitative relationship between the pressure and volume of a gas.

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Kinetic Molecular Theory and PTV

Molecules are moving! This simple idea is the basis of the kinetic molecular theory and our best model for explaining the pressure, temperature, and volume of gases.

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The Ideal Gas Law Applications

Combining the gas laws gives the ideal gas law, a powerful equation for determining the amount of a gas, its density, and molar mass.

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Diffusion of Gases

Diffusion and its close cousin effusion provide fundamental evidence for the motion of molecules and kinetic molecular theory.

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