by msander | Dec 5, 2018 | Gr 7-8 Science & Tech, Gr 9-10 Science
Density differences cause objects to “float” in liquids that are already stacked on top of each other. With this science-magic trick, you’ll put a new spin on our famous Density Column demonstration. First, you’ll discover how to stack nine layers of liquids on top of...
by msander | Sep 5, 2017 | Gr 7-8 Science & Tech, Gr 9-10 Science
This demonstration reviews the concept of density. It examines why certain objects float or sink in water and highlights some interesting information about cola versus diet cola soft drinks. Click here to download the complete demo This demo is part of the STAO demo...
by cbrookallred | Jun 1, 2017 | Gr 7-8 Science & Tech
This activity helps to illustrate the particle theory and how it applies to solutions. Some earlier work using the particle theory is a prerequisite. Dissolving salt into water increases the water’s density, allowing more dense materials to float in the salt water...
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