Phew, what's that smell? And, how does something like a scent travel from its source to all corners of a room? Science sleuths learn how diffusion is responsible for spreading odors around in the sixth installment in a 14-part video series about solids, liquids, and gases. The video includes properties of the three main states of matter and the mechanism of diffusion itself.

Concepts

gases, properties of gases, diffusion, collision theory, motion, concentration gradient

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Additional Tags

science

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Instructional Ideas

• Use the pauses embedded in the video to check students' learning progress
• Extend the lesson by having lab groups experiment with factors like temperature and pressure

Classroom Considerations

• Learners should have a basic knowledge of states of matter and particle movement

Pros

• Animations illustrate diffusion concepts using simple pictures and examples
• Teachers can also use the video in a biology setting to teach diffusion basics

Cons

• None