• Question: Why do bubbles pop?

    Asked by anon-196127 to Sebastian, Paddy, Lee, Jennifer, Fiona, Eleanor on 4 Mar 2019.
    • Photo: Lee Steinberg

      Lee Steinberg answered on 4 Mar 2019:

      Dryness is what pops bubbles, not sharpness. This is because the water from the bubble will wet the surface of the dry material, and this causes there to not be enough water molecules to keep the bubble intact.

    • Photo: Fiona Scott

      Fiona Scott answered on 4 Mar 2019:

      Bubbles made of soapy water pop because something (or someone!) breaks the thin layer of lined up soapy “surfactant” and water molecules, letting all the gas out that has been neatly stored in a little sphere.

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