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Describing the Properties of Gases
Gases have three characteristic properties: (1) they are easy to compress, (2) they expand to fill their containers, and (3) they occupy far more space than the liquids or solids from which they form. There are several basic properties of gases which differentiate gases from liquids and solids: (1) A gas has no definite shape or volume, it will expand to fill its container. (2) A gas is easily compressible. (3) Gases form homogeneous mixtures with each other (without exception).
Lesson 1 (or “Day 1”) Material
Lesson 2 (or “Day 2”) Material
- Day 2 Instructor Presentation
- Day 2 Student Handout
- Day 2 Rubric
- Read Chem 35 – Gas (Wikipedia)
- Read Chem 35 – Gas Study Guide
- Read Chem 35 – General Properties
Lesson 3 (or “Day 3”) Material
Lesson 4 (or “Day 4”) Material
4:28 Gas Properties
5:10 Kinetic Molecular Theory and the Ideal Gas Laws
4:12 What is a gas?
Compare Contrast and Debate
Kickoff Debate Background: Gases have three characteristic properties: (1) they are easy to compress, (2) they expand to fill their containers, and (3) they occupy far more space than the liquids or solids from which they form. An internal combustion engine provides a good example of the ease with which gases can be compressed. (chempurdue)
- Position A: Metric units should be used exclusively in high school for calculating gas measurements.
- Position B: Pounds per square inch (psi) is so commonly used in the US that the Imperial System should also be included.
Resources Documents and Links
- Chemistry 35 Interest Document (combustion engine)
- CH35.Waves_and_Spectrum.tns
Notes and Notices
Instructor Emphasis:
- Science & Engineering Practice: Develop and use models.
- Cross-Cutting Concept: Cause and Effect: Mechanisms and explanations.