Module 3 Intro

1. Module 3 Intro

1.25. Page 6

Lesson 4

Module 3—Behaviour of Gases

Reflect and Connect

Compressed Carbon Dioxide Cartridges

A photograph of a young female cyclist loading a hand- sized metallic cylinder containing compressed carbon dioxide into a tire-inflating tool.

Throughout this module you are asked to consider technologies that apply the use of one or more of the gas laws. For your combined unit and module assessment, you will prepare a response on a technology that applies gas laws. To prepare your response, consider the following information on compressed carbon dioxide cartridges. Refer to the Unit Assessment section for more information.

Compressed carbon dioxide cartridges are a popular alternative to a hand pump for many cyclists. Since the size of the tires and the suggested optimal inflation pressure varies between mountain bikes and road bikes, different sizes of cartridges are available. Each size of cartridge has a different mass of carbon dioxide inside.

Describe advantages and disadvantages of the use of compressed carbon dioxide gas cartridges in place of a hand pump to inflate bicycle tires. Make sure your list addresses at least three different perspectives.

Save a copy of your list in your course folder. You may wish to use this explanation when completing the unit assessment. For more information on the unit assessment, refer to the Unit Assessment section.

Reflect on the Big Picture

Propane Cylinders

Throughout this unit you have been asked to consider technologies that apply the use of one or more of the gas laws. Consider the use of propane cylinders.

How does a technician at a filling station know when a propane cylinder is full? Can you think of how the ideal gas law applies to the filling of propane cylinders, like the cylinders used with many gas barbeques? How is the safety of gas cylinders determined at a filling station? Does this system have merit?

You may wish to use your response to this question as your module and unit assessment. Refer to the Unit Assessment document for more information.

Module 3: Lesson 4 Assignment

Retrieve the Module 3: Lesson 4 Assignment you saved to your course folder earlier in this lesson. Complete Part 2, and save a copy of your answers to your course folder.

Once you have completed all of the questions, submit your work to your teacher.