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Glass
Beginning of essay
is a substance whose form is dependent upon a great number of properties. It can be categorized under different types. Soda-lime is theleast expensive of the types for good reason. Lead is used most commonly as an art . Borosilicate has many advantageous properties. Aluminum silicat ....
Middle of essay
....between sixty and seventy-five percent silica, twelve to eighteen percent soda and five to twelve percent lime. Its resistence to high temperature and sudden changes of temperature are minimal. Also its resistence to corrosive chemicals is only average.(Education Dep. Types of ) However, the typical commercial soda-lime contains seventy-two percent SiO2 , fifteen percent Na2O, five percent CaO, four percent MgO, two percent Al2O3, and one percent B2O3. Certain impurities are found in soda-li.... |
| Number of words: 1557 |
Approximate pages: 6 |
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