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  1. Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer propylene. Polypropylene belongs to the group of polyolefins and is partially crystalline and non-polar. Its properties are similar to polyethylene, but it is slightly ...

    • (C₃H₆)ₙ
    • 0.855 g/cm³, amorphous, 0.946 g/cm³, crystalline
    • None
    • 130 to 171 °C (266 to 340 °F; 403 to 444 K)
  2. en.wikipedia.org › wiki › PlasticPlastic - Wikipedia

    Plastic. Household items made of various types of plastics. Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be molded, extruded or pressed into solid objects of various shapes. This adaptability, plus a wide range of other properties ...

  3. Polyethylene terephthalate (or poly (ethylene terephthalate), PET, PETE, or the obsolete PETP or PET-P ), is the most common thermoplastic polymer resin of the polyester family and is used in fibres for clothing, containers for liquids and foods, and thermoforming for manufacturing, and in combination with glass fibre for engineering resins. [5]

  4. Anning, depicted with her dog. Mary Anning (21 May 1799 – 9 March 1847) was an English fossil collector and palaeontologist. She made discoveries of Jurassic marine fossil beds in the cliffs along the English Channel at Lyme Regis, which changed the scientific thinking about prehistoric life and the history of the Earth.

  5. en.wikipedia.org › wiki › HelloHello - Wikipedia

    According to the Oxford English Dictionary, hello is an alteration of hallo, hollo, [1] which came from Old High German " halâ, holâ, emphatic imperative of halôn, holôn to fetch, used especially in hailing a ferryman". [5] It also connects the development of hello to the influence of an earlier form, holla, whose origin is in the French ...

  6. en.wikipedia.org › wiki › WikiWiki - Wikipedia

    Wiki" (pronounced [wiki] [note 1]) is a Hawaiian word meaning "quick". [4] [5] [6] The online encyclopedia project Wikipedia is the most popular wiki-based website, as well being one of the most popular websites on the entire internet, having been ranked consistently as such since at least 2007. [7] Wikipedia is not a single wiki but rather a ...

  7. en.wikipedia.org › wiki › TSMCTSMC - Wikipedia

    TSMC. Taiwan Semiconductor Manufacturing Company Limited ( TSMC; also called Taiwan Semiconductor) [4] [5] is a Taiwanese multinational semiconductor contract manufacturing and design company. It is the world's second-most valuable semiconductor company, [6] the world's largest dedicated independent ("pure-play") semiconductor foundry, [7] and ...

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