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Glass Essay Topics & Paper Examples

Studdyyy & Banaag at Sikat

A substance in a solid phase is relatively rigid, has a definite volume and shape. The atoms or molecules that comprise a solid are packed close together and are not compressible. Because all solids have some thermal energy, its atoms do vibrate. However, this movement is very small and very rapid, and cannot be observed under ordinary conditions. There are four types of crystalline solids : Ionic solids– These substances have a definite melting point and contain ionic bonds. An example would be sodium chloride (NaCl). Covalent solids — These substance appear as a single giant molecule made up of an almost endless number of covalent bonds. An example would be graphite. Molecular solids are represented as repeating units made…

Chemistry Form 4

INTRODUCTION All the objects that exist around us are made up of chemical substances. These objects exist an element, compound or mixture. All these objects contribute benefit to human kind. As time goes on, human has done many researches to ensure all these chemical substances will be enough for the use of themselves. Chapter 9 of Form 4 syllabus introduces the students with manufactured substances in industry. This is important for the students to appreciate the knowledge of chemistry that is still new for themselves. Personally, I think that this chapter is an interesting chapter as it revealed the way of scientist produces the material around me. It also gives me new knowledges of the uses of chemical substances that…

The Use of Waste Glass as Construction Material

Introduction Waste glass is of great concern in some developed countries, particularly in the urban areas. This is because of the amount of waste material generated from both municipal and construction sources, and the lack of waste disposal areas to receive the material. Countries like Japan, the United States of America, and Australia have taken the initiative to invest in the recycling of glass in order to mitigate the ever increasing amount of waste glass generated over the years. 1.1 History of glass According to (Lee, Jr. 2007), glass can occur naturally as volcanic deposits and fulgurite. It is also be manufactured from silica sand (SiO2) and a mixture of other compounds. Glass containers manufacturing dates back over 3500 years…