Posted by alaraf on Wednesday, September 24, 2008 at 11:01am.
Thank you for using the Jiskha Homework Help Forum. The first answer is from Yahoo:
1. http://uk.answers.yahoo.com/question/index?qid=20061028025909AArUwyQ
2. http://www.bbc.co.uk/schools/ks3bitesize/science/chemistry/elements_com_mix_3.shtml
Sra
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