Homework Help: science

Posted by denessta on Wednesday, October 31, 2012 at 9:43am.

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 language. also write a very very long thing answering my questions. by the way i am in year 7.

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