/oss/taxonomy/term/3727/all en /oss/article/it-dangerous-store-alcoholic-beverages-decanters-made-lead-crystal <p>Glass is made by heating sand and then allowing it to cool down. Sand, or silicon dioxide, has a highly ordered arrangement of its silicon and oxygen atoms. In other words, it has a well-defined crystal structure. When sand is liquified by heat and then cooled, this ordered arrangement of atoms is lost, resulting in a more random pattern characteristic of a glass.</p> Fri, 08 Mar 2019 17:00:00 +0000 Joe Schwarcz PhD 7631 at /oss