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Mystery Powders
http://www.uen.org/Lessonplan/preview.cgi?LPid=2176
Five powders and five tests are provided for students to explore chemical and physical properties, changes, and reactions.
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Crossword on Simple Chemical Reactions 7F
http://www.docbrown.info/
Crossword on Simple Chemical Reactions Quiz - QCA 7F KS3 science chemistry at Doc Brown's
Although the site centres around UK science courses, the study notes and revision quizzes should prove useful for chemistry revision of any science course taken by 11-18 year old school-college pupils-students around the English speaking world.
I've tried to indicate the US grade levels and other countries if supplied with the information.
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