Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules. This is a good introduction to atoms and molecules, as well as an opportunity to talk about diffusion, states of matter, chemoreceptors and the sense of smell. For latex-sensitive learners, this activity also works with non-latex gloves. Extensions include measuring diffusion rates, and extracting essential oils from plant parts. Educator-led demonstrations include having learners act as molecules in a model of a solid, liquid, and gas, and then diffusing through a model membrane as a gas. Part of the "No Hassle Messy Science with a Wow" activity guide by OMSI, where all activities use only household materials.


    Education Levels:

    • Grade 1
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    NSDL,Gases,Biological science,household materials,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-056,Smell,oai:nsdl.org:2200/20110926114328750T,Early Elementary,Upper Elementary,phase changes,Liquids,Life Science,smell,Informal Education,Middle School,molecule,gas,Changes of Phase,pressure,Solids,Elementary School,atom,Chemistry,Physics,diffusion,chemoreception,liquid,solid,matter,Engineering,Pre-Kindergarten,Physical science,chemistry,Technology



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