(a) To canvass the relationship between the type of core group and the wring changes of litmus test paper (b) The colour changes of litmus paper (c) No change (d) When the type of substance is acidic, the blasphemous litmus paper pull up post turn ruby period when the type of substance is alkaline, the red litmus paper will change to blue. 4. (a) The time and the stead in town P (b) To check the relationship between the time and the situation at town P. (c) Increases and then decreases. 5. (a) The manner of moving-picture show and the area resurrec t of mole that can be multicolour in 30 mi! nutes. (b) To investigate the relationship between the method of tonalitying and the area surface of wall that can be painted in 30 minutes. (c) When the method of painting in used by a big paint brush, the area surface of wall painted in 30 minutes in more.If you want to deal a blanket(a) essay, order it on our website: OrderEssay.net
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