Determine how to Balance pH 1.What pH would I add to neutralize a substance with a starting pH of 4? 2. What about starting pH of 14?

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Presentation transcript:

Determine how to Balance pH 1.What pH would I add to neutralize a substance with a starting pH of 4? 2. What about starting pH of 14?

pH Balancing SO…What do THIS mean?? Adding an equally strong opposite to bring a substance close to neutral.

1.Follow directions below to make cabbage juice indicator. 2.Each group member tests the pH of their substance using the cabbage juice indicator in a clear plastic cup. Record your results. Making Cabbage Juice Indicator 1.Rip the cabbage leaf into small pieces and place in plastic bag. 2.Add ¾ cup very warm water and seal the bag closed. 3.Gently squeeze the bag for about 3 min. until the water turns dark blue.

Alien Juice Bar Activity: Follow the directions on the worksheet… Click here to begin: nce.org/kidsite/portfolio/alien- juice-bar/ nce.org/kidsite/portfolio/alien- juice-bar/

pH WebQuest Review BBC - KS3 Bitesize Science - Acids, bases and metals : ActivityBBC - KS3 Bitesize Science - Acids, bases and metals : Activity BBC - KS3 Bitesize Science - Acids and bases and metals : TestBBC - KS3 Bitesize Science - Acids and bases and metals : Test BBC - KS3 Bitesize: Science - pH experiment Finish these websites (in order). Sound off, subtitles on GO ON

BrainPOP - pH Scale Game 1.Choose “Virtual Labs: pH scale & meter calibration” 2.Work through the interactive “game” 3.Click blue back arrow on top left of screen. 4.Choose “Virtual Labs: Acidifying Salsa” 5.Work through the interactive “game” CLICK HERE GO ON

Finished?? “Digestion & pH” worksheet: Read directions & questions carefully!

Discovery Education Under “Assignments” tab: (in order) Mixing Acids & Bases: Complete data table Then do BCR on bottom of paper The Mystery of Potter’s Pond: Complete data table GO ON Escape powerpoint Go to “Computer” Student Apps R drive Scroll down & double click “Discovery”