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Preservice Elementary Teachers' Knowledge of Observable Moon Phases and Pattern of Change in Phases

✍ Scribed by Kathy Cabe Trundle; Ronald K. Atwood; John E. Christopher


Publisher
Springer Netherlands
Year
2006
Tongue
English
Weight
121 KB
Volume
17
Category
Article
ISSN
1046-560X

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A study has been done on how different concentrations and molecular weights of polyethylene glycol (PEG) affect the phase behavior of the sol-gel reaction. The sol-gel reaction of tetraethylorthosilicate (TEOS) in acidic media in the presence of PEG has been studied by means of visual observations a