Bakelite is a the worlds first synthetic plastic. It was invented in 1907 by Belgian-American chemist Leo Baekelite in New york. Bakelite was invented to be to be heat-resistance, lightweight, and strong. Bakelite can't be melted but molded into any shape, which is why Bakelite became so popular in a short period of time. Bakelite was originally a brown colour, however over time the colour was developed to change because of the chemical composition. The most common things that were made from Bakelite are - telephones, radios, kitchenware, and alot of others. (press here to find out more ) WHO INVENTED BAKELITE? Bakelite was invented by belgian-American chemists Leo Baekeland in 1907. Baekeland at the time was trying to create …show more content…
He then started making a substance that would strengthen wood. Baekeland did alot of tests on different types of wood with formaldehyde and phenol. Soon Baeland noticed that he had created a mixture that was insoluble in any solvent. It was on the 8th febuary 1907 Leo Baekeland explained what he had discovered. Soon after he announced that he had created a new substance he became a marketing success. 40 years after is it was invented, Bakelite could be found in every day day use around the world. Bakelite was created to be lightweight, strong and durable. Many manufacturers started using Bakelite plastic to make jewelry boxes, lamps, desk sets, radios, clocks, kitchenware, and a variety of game pieces such as chess, checkers and billiard balls. Around the 1920s Bakelite became extremely popular for jewelry as it was affordable and a attactive replacement for silver and metal materials. Being heat resistant, Bakelite has been used as a critical safety product for wire insulation and in electrical safety. WILL BAKELITE CONTINUE IN …show more content…
Bakelite is a synthetic. All synthetics are man-made to imitate natural objects. Bakelite is a synthetgic type of plastic that contains of a wide range of chemicals that can be moulded into any shape or form which turns into a solid object. Plastics are organic polymers of elevated molecular mass. HOW TO IDENTIFY BAKELITE. The easiest techniques is by rubbing the Bakelite and smelling the item because it will havea very strong smell. Another way is by putting it under hot water because unlike other plastics, genuine Bakelite is heat resistant. Bakelite also isn't poured like other plastics, its molded, so it shouldn't have a seam. CHEMICAL COMPOSITION OF BAKELITE bakelite is a hard infusable and chemically resistant plastic. it is based on a chemical mixture of phenol and formaldahyde (phenol-formaldehyde resin), two compounds that come from coal tar and wood alcohol (methanol). PROPERTIES Bakelite has a number of unique properties. Bakelite can be molded allowing for mass production of identical items. It's smooth, durable and hard wearing. Bakelite is so strong it doesn't scratch easily and is resistant to many acids and
Ewald Georg von Kleist is a German scientist who created the capacitor in November of 1745. Regrettably, Kleist did not have the proper paper work to claim in the records that the design of the capacitor was his idea. Many months later, a Dutch professor named Pieter van Musschenbroek created the Leyden jar, the world’s first capacitor (on record). It was a simple jar that was half filled with water and metal above it. A metal wire was connected to it and that wire released charges. Benjamin Franklin created his own version of the Leyden jar, the flat capacitor. This was the same experiment for the more part, but it had a flat piece of glass inside of the jar. Michael Faraday was the first scientist to apply this concept to transport electric power over a large distance. Faraday created the unit of measurement for a capacitor, called Farad.
When and how the element was discovered including who discovered it and the circumstances and/or investigations that lead to them discovering the element?
Bisphenol A (BPA) is a synthetic compound used worldwide in the manufacturing of plastics and epoxy resins. Derivatives of BPA are present in resin-based sealants and composites used in dentistry.1 Some of these compounds include bis-DMA (BPA dimethacrylate), bis-GMA (BPA glycidyl methacrylate) and BADGE (BPA diglycidylether).1
Strontium was discovered by Adair Crawford, an Irish chemist, in 1790 while studying the mineral witherite (BaCO3). When he mixed witherite with hydrochloric acid (HCl), he did not get the results he expected. He assumed that his sample of witherite was contaminated with an unknown mineral, a mineral he named strontianite (SrCO3). Strontium was first isolated by Sir Humphry Davy, an English chemist, in 1808 through the electrolysis of a mixture of strontium chloride (SrCl2) and mercuric oxide (HgO). Strontium reacts vigorously with water and quickly tarnishes in air, so it must be stored out of contact with air and water. Due to its extreme reactivity to air, this element always naturally occurs combined with other elements and compounds. Strontium is very
Controlling chemiluminescent light was how Omniglow Incorporated became the first company to produce light sticks. In 1986, when the first light stick was invented, scientists thought they could make a lot of money selling light sticks. However, since they had to make light sticks by hand, it was harder for them to produce very many of them. Until machines were invented to make light sticks, it cost too much money to make them by hand.
Ceramics are most commonly used in dental applications as restorative materials for crowns, cements and dentures.
Holmium is a bright sliver colored lustrous metal and is malleable causing it to be very soft. On the other hand for chemical properties holmium is stable at room temperature and dry air. When it is cooled or heated, or placed in moist air, it tends to become more reactive/oxidized. This causes holmium like most earth metals to also be dissolvable in acids and to have a low acute toxic rating. Finally environmentally holmium doesn't cause any damage or threats to plants and
Pounding metal and fabricating metal in thin sheets and sections that humans need or want has a long history. The discovery of how to make and control fire made extracting metals form or more efficient instead of having to find almost pure nuggets of metal. In many civilizations copper was the metal they used but that was succeeded by bronze eventually it is made of copper and tin.
So what exactly is Bisphenol-A? BPA is a chemical compound used to make plastic and epoxy resins and is found not just all over the world but all over your household. BPA is used to produce many of the items that we find ourselves using on a day-to-day basis: from computers to sports equipment, eyeglass lenses and compact discs to the epoxy resin function which is found in adhesives, paints, dental sealants and on the inside of canned foods.
These include nylon resin material, acrylic resin and metal. They use metal covered in plastic with plastic teeth for making partial dentures.
Benzyl bromide, an unknown nucleophile and sodium hydroxide was synthesized to form a benzyl ether product. This product was purified and analyzed to find the unknown in the compound. A condenser and heat reflux was used to prevent reagents from escaping. Then the solid product was vacuum filtered.
Over the course of the past 60 years, an increasing amount of the current population is using plastic and reusable products to try and reduce the amount of waste that is being thrown away. Bisphenol A (BPA) is used to manufacture polycarbonate #7 plastic which have help strengthen plastic bottles, food containers and epoxy resins (University of Minnesota, 2008). BPA is used in a range of products from every day plastic beverage containers and plastic dinnerware, to compact disks, impact-resistant safety equipment, automobile parts, and toys (Centers for Disease Control and Prevention, 2013). The CDC (2013) also states that BPA epoxy resins are used in the protective linings of food cans, in dental sealants, and in other products (Centers for Disease Control and Prevention, 2013).
used to make products such as plastic lumber, toys, containers, carpet, fiber fill for jackets
These fragments absorb all the toxins that pollute waterways, contaminate soil, and sicken animals (which are then consumed). Plastic trash also absorbs organic pollutants such as BPA. They take centuries to decompose while sitting in landfills, amounting to billions of environmentally poisonous time bombs. Bisphenol A (BPA) is a chemical compound used to create polycarbonate plastic and epoxy resins. Polycarbonate plastics are found in a wide range of products, but food and drink containers are the most concerning.