Position	Website	Change	Thumbnail
1	education.jlab.org - Science Education at Jefferson Lab Jefferson Lab	0
2	rsc.org	4
3	chemicalelements.com - Chemical Elements.com - An Interactive Periodic Table of the Elements An up-to-date periodic table with detailed but easy to understand information	-1
4	webelements.com - WebElements Periodic Table of the Elements This WebElements periodic table page contains Essential information for the element ununhexium	5
5	en.wikipedia.org - Wikipedia, the free encyclopedia	-1
6	chemistry.about.com - Chemistry - Periodic Table, Chemistry Projects, and Chemistry Homework Help Chemistry is the study of matter and energy and the interactions between them. Get facts for the elements in the periodic table. Find chemistry demons...	-3
7	chemicool.com - Periodic Table of Elements and Chemistry Award winning periodic table, with user-friendly element data and facts. Cool, online chemistry videos, dictionary, tools and forum.	-2
8	livescience.com - LiveScience | Science, Technology, Health & Environmental News Groundbreaking developments in science, space, technology, health, and the environment	0
9	lenntech.com - Water Treatment and Purification - Lenntech Lenntech designs, builds and installs a wide range of odour treatment, water purification and air filtration products using UV, ozone, Ecosorb, drum f...	20
10	periodictable.com - The Photographic Periodic Table of the Elements The definitive online periodic table reference site including technical data, and photographs and descriptions of thousands of samples of the chemical...	-3
11	environmentalchemistry.com - EnvironmentalChemistry.com: Environmental, Chemistry & Hazardous Materials News, Careers & R... This site provides chemistry, environmental and hazardous materials news, careers & resources including: in depth articles; a detailed periodic ta...	5
12	chem4kids.com - Rader's CHEM4KIDS.COM Chem4Kids.com! The web site that teaches the basics of chemistry to everyone!	5
13	britannica.com - Encyclopedia - Britannica Online Encyclopedia Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sit...	7
14	convertunits.com - Convert Units - Measurement Unit Converter This online unit conversion tool will help you convert measurement units anytime and solve homework problems quickly using metric conversion tables, S...	9
15	ducksters.com - Ducksters: Fun Kid site with safe search, sports, games, hobbies, homework help,.. A fun safe portal for children. Cool kids activities, safe search, kid	0

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