# Ch 11: Gases in Chemistry

Watch video lessons and learn about the calculations and scientific laws associated with gases in chemistry. Use the self-assessment quizzes to gauge your understanding of the material.

## Gases in Chemistry - Chapter Summary and Learning Objectives

This chapter is designed to provide you with an introduction to gases, one of the four basic types of matter. In addition to learning about the properties of these typically invisible substances, you'll find out how to use scientific equations and laws to calculate gas density, pressure, temperature and volume. You'll also see how the molecular weights of gases can determine how fast they move. Among other topics, this chapter includes information about the following:

• Kinetic molecular theory and the properties of ideal gases
• Dalton's Law of Partial Pressures and what happens when gases are mixed together
• Graham's Law and how fast gases can move
• Charles' Law or what makes a hot air balloon go up
• Gay-Lussac's Law and why gases explode
• The Ideal Law and how real gases behave

VideoObjective
The Kinetic Molecular Theory: Properties of GasesUse kinetic molecular theory to explain the properties and movements of gas particles.
Pressure: Definition, Units and ConversionsDefine pressure and convert units of pressure for gases.
Temperature Units: Converting Between Kelvins and CelsiusLearn how temperature units are used to exchange Celsius and Kelvins.
Density of GasExplain how to measure the density of a gas.
Dalton's Law of Partial Pressures: Calculating Partial and Total PressuresCompute partial and total pressures; find the partial pressure of a gas collected over water.
The Boltzmann Distribution: Temperature and Kinetic Energy of GasesCompare the effect of a gas temperature to its average kinetic energy.
Diffusion and Effusion: Graham's LawUse the molecular masses of gases to compare their relative velocities.
Molar Volume: Using Avogadro's Law to Calculate the Quantity or Volume of a GasCompute the amount or volume of a gas at standard temperature and pressure.
Boyle's Law: Gas Pressure and Volume Relationship Predict how a change in volume or pressure affects the other variable.
Charles' Law: Gas Volume and Temperature Relationship Forecast how a change in temperature and volume affects the other variable.
Gay-Lussac's Law: Gas Pressure and Temperature Relationship Calculate how a change in temperature or pressure affects the other variable.
The Ideal Gas Law and the Gas ConstantExplain gas volume, temperature and pressure relationships using the kinetic molecular theory; use the ideal gas law to calculate the pressure, volume, temperature or gas quantities when the other three are known.
Using the Ideal Gas Law: Calculate Pressure, Volume, Temperature or Quantity of a Gas Given the other three variables, reorganize the ideal gas law to compute the temperature, pressure, volume or quantity of a gas.
Real Gases: Deviation From the Ideal Gas LawsDescribe what happens to a gas under non-ideal conditions.
Van der Waals EquationExplain how the Van der Waals Equation amends the Ideal Gas Equation to account for non-ideal conditions.

Final Exam
Chapter Exam

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