Yashmakova, Alexandra 9/3 21 February, 2016 RESEARCH PARAGRAPHS ALUMINUM OXIDE Aluminum oxide is a chemical compound with the chemical formula Al2O3 which consists of oxygen and aluminium. It is found in the nature as the mineral corundum which is colourless and very hard substance used as an abrasive. Aluminum oxide is characterised with its colour, insolubility in water and its melting point which is 2030 oC. The boiling point of this compound is 2977oC. Its density is 3.97 g/cm³. The corundum which is found in the …show more content…
"Aluminum Oxide, Al2O3 Ceramic Properties." Accuratus., 2013. Web. 21 Feb. 2017. . "Aluminium Oxide | Al2O3." National Center for Biotechnology Information. U.S. National Library of Medicine, 10 May 2010. Web. 21 Feb. 2017. …show more content…
It is white spongy gelatinous substance which does not dissolve in water. It is found in the nature as the mineral hydrargilite and reacts with stong bases only under heating. The melting point of that compound is 300oC. Its density is 2.1 - 2.7 g/cm3. Aluminum hydroxide is amphoteric which means that it reacts easily both with strong acids and strong bases. An example is the reaction of Aluminum hydroxide with sulfuric acid when dialuminum trisulfate is formed. This compound is used in many different ways and is added to products that we use in our everyday lives. This compound is used as a water purifier, is put in cosmetics, medicines and last but not least plays an important role in the photographic development processes. In medicine Aluminum hydroxide is used for the production of vaccines for some of the most important illnesses part of which are hepatitis a, hepatitis B, tetanus and many other. It is also put in medicines which deal with the right development of the immune system. Another place where this compound is used are the cosmetics which people use in their everyday skin care such as deodorants, conditioners, toothpastes, products for skin cleaning due to its ability to act as a skin protectant. Aluminum hydroxide is also used in the production of glass and cement, in the textile industry for the production of waterproof
Alka-Seltzer is a medical drug that works as a pain reliever and an antacid. The pain reliever used is aspirin and the antacid used is baking soda. When sodium bicarbonate dissolves in water it splits apart into sodium and bicarbonate ions. The bicarbonates reacts with hydrogen ions from citric acid to form carbon dioxide gas and water. This is how the bubbles are made.
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It is also used in the technology industry as it is a very good conductor of heat- which devices like mobile phones require to function properly .Also, it is used in dentistry to make gold fillings which are a replica of human teeth. In conclusion, gold has been improvised to suit many of its applications in the society. To make gold more durable, companies also regularly concentrate it with metals such as copper and silver- which form strong alloys of itself ( BBC, Bitesize GCSE, Science, Metals and
If I had a household product labeled sodium bicarbonate, I would add an acidic substance and expect bubble to be created. As we know acid reacts with bubbles when combined with sodium bicarbonate. 2. Write the chemical equation for the reaction in well A6. B BoldI ItalicsU Underline Bulleted list Numbered list Superscript Subscript3 Words NaOh + AgNO3>>>>NaNO3 + AgOH 3.
Recently, stem cells have become very important for testing new drugs (Stem Cell Basics: What Are the Potential Uses of Stem Cells and
Becoming a Beckman Scholar, there is such a unique opportunity to use our platform to support a wide variety of causes and initiatives. By leveraging our networks and resources, we can make a lasting impact on our communities and the world at large. I am driven to use this scholarship to further my education and research in the field of biotechnology. With the help of this scholarship, I hope to develop innovative solutions that will have a positive impact on the
Abstract: The purpose of this experiment was to identify given Unknown White Compound by conducting various test and learning how to use lab techniques. Tests that are used during this experiment were a flame test, ion test, pH test, and conductivity test. The results drawn from these tests confirmed the identity of the Unknown White Compound to be sodium acetate (NaC2H3O2) because there were no presence of ions and sodium has a strong persistent orange color. The compound then will be synthesized with the compounds Na2CO3 and HC2H3O2 to find percent yield.
A hydrate is a compound, where water molecules are chemically bounded to another compound or element. An anhydrate is the substance remaining after removing water from a hydrate. The hydrate in this lab was Copper Sulfate. The hydrates formula is CuSO4 times xH2O. The purpose of this lab was to pull the water from a hydrate to expose the anhydrate and calculate what the hydrate is by finding the formula for the
The study of Green Chemistry emphasizes the reduction of hazards to human health and the larger environment, as well as
The periodic table is a much more interesting concept than people give it credit for. Periodic means the repeating according to some pattern. The first periodic table is very different from the modern one. They are both very interestingly organized. The periodic table has the elements on them.
It is also used to make several types of porcelain and ceramic. Albite the other mineral isn’t as widely used but is found in some metamorphic mineral deposits. Moonstone occurs in a multitude of places around the world. These being as close as The United States for me and as far away as Australia.
This is launched to enhance the understanding of the role of Microbiome in the ecology of humans and using the concerned knowledge in the development of therapies for various illnesses (About MGH, nd, News Releases). The department of chemistry and biological engineering, and MIT institute of medical engineering and science are involved in collaboration with MGH clinical medicine. This new partnership will follow the one that was implemented among MIT, Ragon Institute of MGH and Harvard, which started in 2009 and worked on developing effective vaccine against AIDS as a part of their study on the role of immune system in human disease (MIT News, Oct. 15, 2014). This new partnership between MIT and MGH has offered $3 million to a two-year period research project dealing with the problems in diagnostics, autoimmune and infectious diseases and in
My knowledges of molecular biology, biochemistry and microbiology have grown, but I know there is a lot to learn and, as always, to keep learning is my final goal. This is the moment to challenging myself and pursuit other experiences in an area that involve Biochemistry and Molecular Biology. I want to continue my education at the Graduate Program in Biochemistry and Cell Biology at Rice University. This program is the best option to continue improving my scientific and professional skills. The privileged research conditions of your university, the facilities, the faculty and the outstanding researcher lines make this university the perfect place for a doctoral training.
MTA is composed of tricalcium oxide, tricalcium silicate, dicalcium silicate and tricalcium aluminate. It also contains bismuth oxide for the radiopaque properties. There are two types of MTA which are the grey and the white. The difference between the two is the content of iron, aluminium and magnesium oxides. There is less or total absence of the oxides in the white MTA.
Introduction: The objective for the lab was to determine properties of materials by using a tension test. The properties that were determined was Young’s Modulus, ultimate tensile strength, and yield strength. Three aluminum alloys were tested. The first was the AA 2024 , which is high strength used in aerospace applications.