{"id":5595,"date":"2013-03-13T15:15:54","date_gmt":"2013-03-13T15:15:54","guid":{"rendered":"http:\/\/SchoolTutoring.com\/help\/?p=5595"},"modified":"2014-12-02T08:27:04","modified_gmt":"2014-12-02T08:27:04","slug":"a-chemistry-lesson-making-glass-flexible-strong-and-tough","status":"publish","type":"post","link":"https:\/\/schooltutoring.com\/help\/a-chemistry-lesson-making-glass-flexible-strong-and-tough\/","title":{"rendered":"A Chemistry Lesson: Making Glass Flexible, Strong, and Tough"},"content":{"rendered":"

Overview:\u00a0What Is Glass?<\/strong>
\nGlass is a peculiar state of matter with some of the properties of a solid and some of a liquid.\u00a0 The scientific definition of “glass” refers to a solid structure in which the molecules do not form crystals but flow over one another.\u00a0 In addition, when the substance is heated, rather than forming a liquid, it forms a semi-solid in the “glass transition”.<\/p>\n

Common Glass Is Made of Sand<\/strong>
\nThe most common form of glass is made up of silica (like sand), some lime, and sodium.\u00a0 This is the type used in windows and typical glassware.\u00a0 It is brittle and fragile, and it has been used for thousands of years.\u00a0 If a student heats a glass tube made of this substance in a Bunsen burner flame, it is easy to stretch it and make pipettes, because the molecules can move around and flow in the semi-solid state.\u00a0 Glass blowers and artists use this common property of glass to make beautiful art forms.<\/p>\n

Plastics Are Another Common Form of Glass<\/strong>
\nThe ingredients forming glass can be varied.\u00a0 For example, other elements can be added to the silica-lime-sodium mixture to vary the color and shine of glass, such as different types of oxides or lead.\u00a0 In addition, under the scientific definition of glass, it can be made using acrylics and other forms of plastics.\u00a0 These forms of glass are stronger and lighter, and used commonly in eyeglasses and other types of lenses.<\/p>\n

New Ways to Make Glass<\/strong>
\nMost recently, scientists have used molecular and computer technology to discover more about how the atoms in glass are precisely arranged.\u00a0 It was known that some substances formed glass when their liquid forms were first melted, then cooled.\u00a0 They would either form the hard lattice structure of a crystal or the smooth, flowing shape of glass.\u00a0 Scientists theorized that some crystals would form inside the substance and they would flow over one another.\u00a0 If they could control the structure, they could transform solids into forms of glass.<\/p>\n

Glass Formed of Metal<\/strong>
\nMetallic alloys that form glass are under development currently.\u00a0 They combine the toughness of metal with the transparent nature of glass.\u00a0 They do not crack and shatter under pressure like glass does, so it may be possible to design a plane that has wings made of glass.\u00a0 Not too long ago, \u00a0a tank made of transparent aluminum was science fiction.\u00a0 It was many times stronger and lighter than a similar tank that size would be made of glass.\u00a0 Thin sheets of transparent aluminum and other substances are currently under development.<\/p>\n

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Overview:\u00a0What Is Glass? Glass is a peculiar state of matter with some of the properties of a solid and some of a liquid.\u00a0 The scientific definition of “glass” refers to a solid structure in which the molecules do not form crystals but flow over one another.\u00a0 In addition, when the substance is heated, rather than […]<\/p>\n","protected":false},"author":22,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[5,16],"tags":[436,737,1111,1628],"class_list":["post-5595","post","type-post","status-publish","format-standard","hentry","category-chemistry","category-science","tag-crystal","tag-glass","tag-metal","tag-silica"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/schooltutoring.com\/help\/wp-json\/wp\/v2\/posts\/5595","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/schooltutoring.com\/help\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/schooltutoring.com\/help\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/schooltutoring.com\/help\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/schooltutoring.com\/help\/wp-json\/wp\/v2\/comments?post=5595"}],"version-history":[{"count":0,"href":"https:\/\/schooltutoring.com\/help\/wp-json\/wp\/v2\/posts\/5595\/revisions"}],"wp:attachment":[{"href":"https:\/\/schooltutoring.com\/help\/wp-json\/wp\/v2\/media?parent=5595"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/schooltutoring.com\/help\/wp-json\/wp\/v2\/categories?post=5595"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/schooltutoring.com\/help\/wp-json\/wp\/v2\/tags?post=5595"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}