Geopolymer From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Geopolymers are new materials for fire- and heat-resistant coatings and adhesives‚ medicinal applications‚ high-temperature ceramics‚ new binders for fire-resistant fiber composites‚ toxic and radioactive waste encapsulation and new cements for concrete. The properties and uses of geopolymers are being explored in many scientific and industrial disciplines: modern inorganic chemistry‚ physical chemistry‚ colloid chemistry
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neon ← sodium → magnesium Sodium in the periodic table Appearance silvery white metallic Spectral lines of sodium General properties Name‚ symbol‚number sodium‚ Na‚ 11 Pronunciation /ˈsoʊdiəm/ soh-dee-əm Element category alkali metal Group‚ period‚block 1 (alkali metals)‚ 3‚ s Standard atomic weight 22.98976928(2) Electron configuration [Ne] 3s1 2‚8‚1 History Discovery Humphry Davy (1807) First isolation Humphry Davy (1807) Physical properties Phase solid Density (near r
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Name: Elizabeth Hackathorn Date: April 14‚ 2013 Instructor’s Name: Kristina Jantz Assignment: SCI103 Phase 1 Lab Report Title: Measuring pH Levels Instructions: Enter the Virtual Lab‚ and conduct the experiments provided before going out into the filed for additional research. Please type your answers. When your lab report is complete‚ submit it to the Submitted Assignments area of the Virtual Classroom. Part I: Answer the following questions while in the Phase 1 lab environment
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but more like non metals. 2. Identify groups and sections of the periodic table by group name and common properties. Alkali Metals: in Group 1 of the periodic table are known as the alkali metals. These metals are extremely reactive‚ reacting with water and with most nonmetals. All of the alkali metals have a silvery appearance and they are soft enough to be cut with a knife. Alkali metals are so reactive that they do not occur in nature as pure
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neutralise the soil. Stings When we get stings e.g. wasp‚ bee‚ stinging nettles we often use household acids and/or alkalis to treat them. Wasp sting venom is alkaline and so its effects can be neutralised with vinegar or acid and this neutralisation then reduces the pain‚ and Bee sting venom is acidic and so its effects can be neutralised with bicarbonate of soda or alkali and this reaction reduces the pain. If you get an acidic sting then Baking soda or other alkaline products such as cucumber
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mildness in soap. Soap is a substance made to help clean things. Fats and chemicals called alkalis are the two main ingredients in soap. Sometimes animal fats or vegetable oils like coconut oil‚ olive oil‚ palm oil‚ soybean oil‚ and corn oil are common fats used in soap making. Most common alkalis used are sodium hydroxide and potassium hydroxide. When you combine these fats with a water solution of an alkali and add heat the fats decompose forming glycerin and the sodium salt of the fatty acid. The
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table. The earliest periodic table was originated by Dimitri Mendeleif. b. Students know how to use the periodic table to identify metals‚ semimetals‚ non metals‚ and halogens. c. Students know how to use the periodic table to identify alkali metals‚ alkaline earth metals and transition metals‚ trends in ionization energy‚ electronegativity‚ and the relative sizes of ions and atoms d. Students know how to use the periodic table to determine the number of electrons available for
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Test Paper Chemistry Section 1 : Multiple choice‚ circle the best choice A‚ B‚ C‚ or D in each questions. Each Question Carries 1 mark 1. Which of the following processes do water molecules gain heat? A. Melted ice cream freezing when put in to refrigerator B. Water droplets forming on outside of a cold can of soda C. Icecube melting when left outside D. Water droplets forming on a window on a cold day 2. Which of the following properties should a sponge have to carry out its functions
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Signs and symptoms of Conjunctivitis‚ Swelling of conjunctiva and watering of the eyes are symptoms common to all forms of conjunctivitis. However‚ the pupils should be normally reactive‚ and the visual acuity normal. Viral Viral conjunctivitis is often associated with an infection of the upper respiratory tract‚ a common cold‚ and/or a sore throat. Its symptoms include excessive watering and itching. The infection usually begins with one eye‚ but may spread easily to the other. Viral conjunctivitis
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Complete the following project to make up the missed snow days. The New Periodic Table with Rubric Included The New Periodic Table Dmitri Mendeleev created the periodic table on March 6‚ 1869 (almost 100 years‚ to the day‚ before my birthdayJ) based on the atomic weights of the elements. Many elements were missing then‚ but he left spaces for them because he thought one day they might be discovered. Now the periodic table is arranged by the element’s atomic number and many other
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