Why do balloons go flat over time? The answer lies in the behavior of gases! Introduce young scientists to diffusion and effusion with a video. Pupils learn the composition and partial pressures of atmospheric gases as well as how the scent of perfume travels from one end of a room to the other.

Concepts

gases, behavior of gases, properties of gases, diffusion, effusion, equilibrium, concentration gradient, partial pressure

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Additional Tags

science

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Instructional Ideas

• Follow up the video with a simple diffusion demonstration
• Incorporate the resource into a lesson about Dalton's Law of Partial Pressures
  

Classroom Considerations

• Review properties of gases as an introduction to the video
  

• This video is hosted on YouTube

Pros

• Visual aids that demonstrate diffusion and effusion make the concepts easy to differentiate
• The narrator incorporates Dalton's Law of Partial Pressures into the resource to make for a great introduction to the gas laws
  

Cons

• None

Common Core

SL.9-10.2