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In this activity, learners discover that the way a material behaves on the macroscale is affected by its structure on the nanoscale.

Learners observe a flask with a balloon attached over the mouth and inverted inside the flask.

In this activity, learners separate a mixture of pebbles, salt crystals, and wood pieces. They add water and pour the mixture through a strainer.

"Sublimation Bubbles" allows learners to explore how some solid materials, such as dry ice, can phase change directly from their solid to gaseous form.