CHEMISTRY

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Homework:


 * 1. Describe the importance of alloys, plastics and polymers in Society**


 * Alloys** are essential to not only construction, but transportation, and the world economy. They can blend the properties of two or more metals to create a hybrid metal that is more cost effective, stronger, more durable, and overall better suited to it's intended purpose than the pure metals used to create the compound.
 * Plastic** have moulded the modern world and transformed the quality of life. There is no human activity where plastics do not play a key role from clothing to shelter, from transportation to communication and from entertainment to health care. Plastics, because of its many attractive properties, such as lightweight, high strength and ease of processing, meet a large share of the materials needs of man, and that too at a comparatively lesser cost and causing lesser environmental implications. From practically zero during the beginning of the 20th century, human kind today consumes more than 150 million tons of plastics per year.


 * Polymers:** Fiber reinforced polymers (FRP) have been gaining in development and application in recent years. They are made of fibers embedded in a polymeric resin, and have been used in place of steel reinforcement for concrete structures.


 * 2. Find and describe at least two different types of newest materials used in each of these: Medicine, Industry, and Sports.**

New inorganic materials (metals and their alloys, carbon materials, ceramics, glass, and glass-ceramics) that are used in one of the branches of medicine, Extensive possibilities for controlling the structures, medico-biological, physicochemical, and mechanical properties of bioactive glasses, glass-ceramics, ceramics, and composites based on them are demonstrated.

The aims of the sports industries are to find new ways of improving sports equipment and there is much interest in new lightweight materials and the response characteristics of these materials. In tennis for example, raquets at first were made by solid sectins of wood but then they were made by carbon fibre reinforce plastic.(CFRP)

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Homework: Webquest- Element Phosphorus

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