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Breathe life into balloon lungs Activity

by Ariel Marcy, 28 September 2023 | 0 comments

Plastic drink bottle with bottom cut off and replaced by a balloon.

Have you ever wondered how your lungs move air around? Safety: This activity involves using scissors to cut into a plastic bottle. Ask an adult for help with this step and cover the resulting sharp edges with duct tape.

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Breaking symmetry News

by Pat, 20 November 2012 | 0 comments

Chemical formulas, such as H2O (water) and CO2 (carbon dioxide), are handy as they identify which atoms are present in a chemical compound. This can in turn help to make predictions about their properties. But only knowing which atoms make up a compound sometimes isn’t enough. It helps to know how the atoms are arranged.

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