ew.
Take a few moments to consider our "experiment" with the cabbage juice indicator and the household products; we mostly played around, somewhat haphazardly, to find relative pH for each substance and then placed them on a pH scale. Very pretty. But we should ask ourselves a few questions, such as, How did concentration affect the pH? How could we have made this a better experiment? What did we really learn? Leave a comment or pose a question below. (yes, everyone.)
Review your notes so far from this chapter's videos (which should now be in a new section of your chemistry binder, right?) and page through textbook sections 16.1-4, making sure you know the vocabulary and summary. Then practice calculating concentrations/pH conversions with the blue-letter Problems 30-36 at the end of the chapter on page 533. Remember the blue-letter problems have answers in the back of the book.
Why did we use red cabbage juice? Is there another liquid we could have used?
ReplyDeleteWe should have used less cabbage juice per cup to make the acids and bases more concentrated.
ReplyDeleteWas the color off on the handout? Their colors were much more pastel than ours. Maybe the cabbage juice was too concentrated?
ReplyDeleteyes, the printout was faded, a lot more color online. we could have gotten by with a more diluted cabbage juice, but at least it was all the same strength, and so not another variable.
ReplyDeleteWe could have measured each portion of cabbage juice and variable that we were putting in the cabbage juice to have consistency. Also, does the physical appearance (cloudy or not cloudy, not the color) reflect anything?
ReplyDeleteWhy did some of the colors change when we added more substance to some of the solutions?
ReplyDelete