Lithium‚Sodium‚Potassium‚Rubidium‚Caesium and Francium are all part of group 1.They are metals that can be easily cut.After being cut‚it is shiny but it quickly tarnishes due to the fact that the metal reacts quickly with oxygen or water.The shiny surfaces of Sodium quickly tarnishes more quickly than Lithium and Potassium more tarnishes more quickly than Lithium.This shows that the reactivity increases as we move down the group. Figure 1 Elements Melting point Boiling point Thermal
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Periodic trends across the period three oxides Clare Smerdon Access to Higher Education Science 08/04/2015 Julie Day Periodic trends across the period three oxides Objective This experiment is intended to explore the relationship between the physical properties of the oxides of Period 3 elements (sodium to chlorine) and their structures. Argon is obviously omitted because it doesn’t form an oxide. Hypothesis This experiment will be investigating the following
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CHEMISTRY Guess Paper – 2013 Class – XI Subject - CHEMISTRY MAX MARKS=90 ……………………………………………………………………………………… General instructions: All questions are compulsory. Marks for each question are indicated against it. Questions number 1to 8 are very short –answer questions‚ carrying 1 mark each. Answer these in one word or about one sentence each. Questions number 9 to18 are short –answer questions‚ carrying 2 marks each. Answer these in about 30 words each. Questions number19 to27
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my trip to shimla was the best man!! we had so much of fun in shimla and also great Essays for Science: Chemistry Building Blocks of Science THE periodic table of the elements—the 96 metals‚ nonmetals and gases that form everything in the material universe— is the blueprint of the atomic future... Calorimetry: Specific Heat and Heat of Solution Summary These experiments were conducted to find the specific heat of a metal as well as the heat of solution of a solid. Both experiments required
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Homework #2 1. How many electrons would a typical neon element have? How many electrons does a typical lithium element have? Use that information to qualitatively describe the difference between the emission spectrum of neon and lithium. 10‚ 3‚ the greater the number of electrons the greater the number of emission lines on the spectrum 2. The dominant element present in the star’s spectrum to the right: Hydrogen 3. Is a toaster oven filament an example of an emission‚ absorption
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and product innovation as a result of years of research. It all started in 1970 when Geoffrey Ballard‚ Keith Prater and Paul Howard agreed to develop a rechargeable and lightweight lithium battery. Although the company’s main product line was the batters‚ the three partners had a vision to produce the rechargeable lithium type. To what extent should spin-off technologies be transformed into stand-alone products? Spin-off technologies should only stand alone in circumstances where goals and visions
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WESTFIELD Science-Oriented School and Colleges CERTIFICATION OF THE PROJECT This is to certify that we have read the individual project entitled MAKING ELECTRICITY FROM SALTWATER AND AIR The researcher has successfully completed and defended his Science Project before a panel Recommendation: [ ] Approved [ ] Passed with revision [ ] Redefense Sir Jonathan Paulino Sir Joebert Angeles Member of
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storage and the like. At present‚ the productized graphene is mainly used in such fields as battery conductive additives‚ heat dissipating materials and composite materials‚ with products dominated by graphene powder and suspension prepared by oxidation-reduction method. Also‚ its costs have been reduced to within RMB10/g. In 2013‚ the industries including semiconductor electronics‚ energy (primarily battery) and composite materials showed the highest demand for graphene‚ which occupied 26%‚ 19% and
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SureSigns VS4 Vital Signs Monitor INSTRUCTIONS FOR USE Release A.04 English Notice Proprietary Information This document contains proprietary information‚ which is protected by copyright. Copyright Copyright © 2012 Koninklijke Philips Electronics N.V. All Rights Reserved Trademark Acknowledgements SureSigns is a registered trademark of Koninklijke Philips Electronics N.V. Other product names may be trademarks of their respective owners. Manufacturer Philips Medical Systems 3000 Minuteman Road
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HS1103- Engineering chemistry - I KINGS COLLEGE OF ENGINEERING Department of Science and Humanities Sub. Code: HS1103 Sem/Year: I / I Sub. Name: Engg.Chemistry-I UNIT – I – WATER TREATMENT PROCESS: PART – A ( 2 Marks) 1. Define hardness of water. 2. Distinguish between carbonate hardness and noncarbonate hardness. 3. Draw the structure of EDTA. What happens when EDTA is added to hard water? 4. Define alkalinity. 5. Why is water softened before using in boiler? 6. What is meant
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