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Diffusion from a balloon
STANDARD 3200-01 Students will evaluate the
particulate nature of matter.
OBJECTIVE 3200-0102 Demonstrate the role of motion in the particulate
Intended Learning Outcomes:
1a. Make observations and measurements.
1d. Make estimations and predictions based on observations and current
2a. Identify variables and describe relationships between them.
2b. Formulate research questions and hypotheses.
2g. Construct models and simulations to describe and explain natural
4d. Recognize the personal relevance of science in daily life.
Be familiar with the particulate nature of matter.
1. Students will form hypotheses and observe demonstrations
of particle movement.
2. Students will identify variables and describe relationships
in simulations of particle movement.
- stop watches
- vanilla extract
Demo #3 DIFFUSION FROM INSIDE BALLOON
- 1. Teacher pours vanilla extract into a test tube (to disguise
- 2. Using a pipette, drop one or two drops of extract deep into
- 3. Students blow up and tie balloons and set on desks for constant
- 4. Do this at the beginning of a class period and move on to
other activities while students are silently observing.
- Students time how long it takes to notice a change in odor
- 5. Within 5-10 min. students will notice a different odor in
- 6. Discussion and hypotheses follow.
- Where is tthe smell coming from?
- What does it smell like to you?
- Is the smell familiar?
sure to keep all Chemical, and Glassware Safety Rules that are specified
by your teacher and in all general laboratory experiences.
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14, 2000 by: Glen
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