MERLOT Search - materialType=Reference%20Material&category=2633&anyKeyWords=false&community=3017&contributorName= http://www.merlot.org:80/merlot/ A search of MERLOT materials Copyright 1997-2013 MERLOT. All rights reserved. Fri, 24 May 2013 15:16:59 PDT Fri, 24 May 2013 15:16:59 PDT MERLOT Search - materialType=Reference%20Material&category=2633&anyKeyWords=false&community=3017&contributorName= http://www.merlot.org:80/merlot/images/merlot.gif http://www.merlot.org:80/merlot/ 44 34 Chemguide: Helping you to Understand Chemistry http://www.merlot.org/merlot/viewMaterial.htm?id=80233 This site has information on atomic structure and bonding, inorganic chemistry, physical chemistry, instrument analysis, basic organic chemistry, and organic reaction mechanisms. There is also a link to Dr. Phil Brown?s website where you can get questions for tests. The site?s information is based on the syllabus for UK students. The site does not have many diagrams or any interactive material. However, the information is detailed and clear. Students in high school and undergraduate general chemistry classes will find it very helpful. כיצד פועלת תחנת כח אוסמוטית? http://www.merlot.org/merlot/viewMaterial.htm?id=515277 דף מידע ובו שני סרטונים המסבירים כיצד פועלת תחנת כוח אוסמוטית, המייצרת חשמל על ידי ניצול הפרשי ריכוזי המלח בין מים מתוקים ומים מלוחים. הסרטונים מקושרים לאתר youtube. מופיע במדור מאגר מדע של אתר מכון דוידסון. Buoyancy and high altitude ballooning: the Red Bull Stratos mission http://www.merlot.org/merlot/viewMaterial.htm?id=735047 A detailed analysis of buoyancy in the context of Felix Baumgartner's historic jump from 39 km altitude as the culminating event of the Red Bull Stratos mission. Buoyancy was provided by a helium-filled balloon that made the equipment less dense overall from the surrounding air.This article takes readers through the calculation of the density of the relevant gases (air and helium) and the net density of the ascent equipment. An error analysis shows that helium and air must have counter-diffused through the balloon wall and estimates the composition in the balloon. Also discussed are possible reasons for why the ascent equipment achieved a greater altitude than expected. E אנרגיה http://www.merlot.org/merlot/viewMaterial.htm?id=421264 מאמר - מושג כולל של "אנרגיה" שבמסגרתו אפשר לשלב את כל הכוחות השונים הקשורים זה לזה, הוא מושג חדש, הנזקף לזכותו של מייקל פרדיי, בעיקר בזכות העובדה שגילה את הקשר בין חשמל למגנטיות. Joseph Priestley on Phlogiston http://www.merlot.org/merlot/viewMaterial.htm?id=759089 Primary resource wherein Joseph Priestley defends the theory of Phlogiston, and attempts to falsify theories of combustion, oxygen, and elements, or "the new system of chemistry״. This letter was written in 1796. NDRL/NIST solution kinetics database http://www.merlot.org/merlot/viewMaterial.htm?id=81828 Database of the kinetics of solution-phase reactions. Search by chemical formulae of reactants and / or products and/or solvents. Includes temperature dependence (where known) and literature references. NIST gas phase kinetics database http://www.merlot.org/merlot/viewMaterial.htm?id=81827 Database of the kinetics of gas-phase reactions. Search by chemical formulae of reactants and / or products. Includes temperature and pressure dependence (where known) and literature references. כימיה מחושמלת http://www.merlot.org/merlot/viewMaterial.htm?id=422090 מאמר - תגובות כימיות יכולות לחולל זרם חשמלי וזרם חשמלי יכול לחולל שינוי כימי. חקירת הקשר הזה הובילה למהפכה האלקטרוכימית. על תגליותיהם של פורצי הדרך, ועד להמצאת הסוללות.