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Smelly Balloon Diffusion Lab

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Want a fun way to introduce diffusion to your students? Try this smelly balloons activity! In this activity, you will place different scent extracts into latex balloons and students will guess which scent is inside. Following the lesson discuss with students how the scent passed through the balloon and introduce key vocabulary such as diffusion, semi-permeable, and concentration gradient.

This free activity is fully editable so you can change the number of balloons or edit the student lab worksheet.

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