After much consideration, thinking and research I have decided to change my problem idea, whilst still keeping the same theme of filtration. Instead of testing the purity of the water extracted from different liquids when they are filtered, I have decided to investigate 'If filtering different liquids causes the pH of the substance to change'. I feel as though when researching how to complete different elements in my experiment such as 'how to test the purity of water' and 'how to extract water from different liquids' I released that these processes would have taken me a lot of time and are complex. I am confident with my new experimental problem and have begun my plan. I look forward to completing this experiment to the best of my ability.
Some websites which I have used to research my experimental problem include:
- http://www.dataloggerinc.com/tutorials/data_logger_ph_measurement.php
- http://cas.umn.edu/assets/pdf/Harris%20-%20Water%20Filtration%20Competition.pdf
- https://www.youtube.com/watch?v=OMZpzcItQkc
Anna, the pH will depend on dissolved substances. Filtration does not remove dissolved substances. This idea will therefor not work.
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