March 27, 2017

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Posts by denessta

Total # Posts: 1

what is a ph scale? what is a acid? what is alkalis? what acid and alkais can you find around the house? (put pictures to go with this). when u are giving an explanation of what ph scale, acid and alkalis mean plz be as clear as possibe, use understandable low and simple ...
October 31, 2012

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