States of Matter & The Kinetic Molecular Theory: Gases

States of Matter & The Kinetic Molecular Theory: Gases

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This freebie includes an editable, animated PowerPoint introducing the basic assumption behind the Kinetic-Molecular Theory that all particles of matter are in constant motion. In this lesson, students will use the Kinetic-Molecular Theory for Gases to describe the properties of gases. Each of the basic properties of gases are compared to the KMT—expansion, fluidity, compressibility, density, and diffusion. The difference between diffusion and effusion is included.

HS-PS2 Structure & Properties of Matter
HS-PS1-1: Describe and classify different kinds of materials by their observable properties.
  • DCI: PS1.A: Different kinds of matter exist and many of them can be either solid or liquid, depending on temperature. Matter can be described and classified by its observable properties.
  • Science & Engineering Practices—Constructing Explanations: Make observations to construct an evidence-based account for natural phenomena.
  • Cross-Cutting Concepts—Patterns: Patterns in the natural and human designed world can be observed. 
  • State the Kinetic-Molecular Theory of Matter.
  • Relate the five postulates of the Kinetic-Molecular Theory of Gases to the particular properties of gases.
  • Define the Ideal Gas, and discuss why “real” gases are not ideal gases.
  • Give two examples of conditions that cause gases to deviate the most from the ideal gas.
  • Describe the basic properties of gases including expansion, fluidity, compressibility, density, diffusion and effusion.
Prior Knowledge:

Lesson Duration: One class period plus time to work on assignment in class.

Included in This Resource:
  • 19 slide PowerPoint animated & editable
  • Teacher Notes
  • Student Guided Notes
  • Suggested Key for student notes
  • Check for Understanding Exit Ticket
  • Homework/In Class Practice
Teacher Prep Time: Just print and go!

Note on the PowerPoint: The PowerPoint included in this product is editable. It is also animated, which means that it may appear busy or overlapping in the slide edit mode, but will be awesome in the slide show mode! Please don’t edit the PowerPoint until you have seen it in the slide show mode!

This lesson is appropriate for grades 9-12 chemistry.

This will be a lesson you will want to use year after year!
Chemistry Corner
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Chemistry Corner’s PowerPoints are perfect for the flipped classroom. However, please read the Copyright Terms below before using it as such. Thanks!

LICENSING TERMS: By downloading this product, you own a license for one teacher only for personal use in your classroom. Licenses are non-transferable, meaning they cannot be passed from one teacher to another. No part of this resource is to be shared with colleagues or used by an entire grade level, school, or district without purchasing the proper number of licenses. If you are a coach, principal or district interested in transferable licenses to accommodate yearly staff changes, please contact

COPYRIGHT TERMS: ©Chemistry Corner. Please note – all material included in this resource belongs to Chemistry Corner. By downloading, you have a license to use the material, but you do not own the material. This resource, or any portion of this resource, may not be uploaded to the internet in any form, including classroom/personal websites or network drives, unless the site is password protected and can only be accessed by students—no other teachers or anyone else on the internet.