Module 3 Intro

Module 3—Behaviour of Gases

In This Module

 

Lesson 1—Properties of Gases and Boyle’s Law

 

You will begin your study of gases by learning how to apply Boyle’s law—a mathematical relationship between the pressure and volume of a gas. You will also learn about pressure measurement and how to convert from one unit to another.

• What is pressure?
• How is pressure measured?
• How are pressure and volume of a gas related?
• How are pressure-volume relationships applied in technologies to support breathing?

Lesson 2—Kelvin Temperature, Charles’ Law, and the Combined Gas Law

 

While Boyle’s law establishes the relationship between the pressure and volume of a gas at a constant temperature, it may not be used if the temperature is changing. In this lesson you will learn that Charles’ law and the combined gas law may be used if the temperature of a gas changes. You will also learn about the Kelvin temperature scale and how to convert from degrees Celsius (ºC) to kelvin (K).

• What is the Kelvin temperature scale, and why is it used?
• What are the relationships among amount, pressure, volume, and temperature for a fixed amount of gas?

Lesson 3—The Law of Combining Volumes and Avogadro’s Theory

 

The kinetic molecular theory has important implications for gas laws. In this lesson you will examine Gay-Lussac’s law of combining volumes (not to be confused with the combined gas law) and Avogadro’s theory.

• Is it possible to predict the quantity of a gaseous substance involved in a chemical reaction?

Lesson 4—Molar Volume and the Ideal Gas Law

 

In the final lesson of this module you will learn about the ideal gas law. This law establishes the relationship between the molar amount of a gas and other gas properties, such as pressure, volume, and temperature.

• What is molar volume?
• What is the difference between a real gas and an ideal gas?
• What relationship exists between pressure, volume, temperature, and moles of gas?

Module Assessment

 

The Module Assessment and the Unit Assessment are combined for this module. Please see the Unit B Assessment document.