How to Prepare Red Cabbage pH Indicator
While the cabbage shown is definitely purple, it is commonly called RED cabbage.
With that out-of-the-way, I have a brand new way to extract the colored juice from this cabbage. FREEZE IT!!
This was one of those serendipitous discovery. Not wanting to discard an old partial head of red cabbage, I wrapped it and stuck it in the freezer. Sure enough, I needed to do some testing with red cabbage juice. I let the cabbage thaw and found it to be very soft and juicy. UUM!
I was able to use my hands to squeeze a dark purple juice from the cabbage. This juice was so concentrated that it had to be diluted with distilled water to be used as an indicator for acid/base testing.
Important:
Refrigerate the cabbage juice to keep it from spoiling.
Big Book of Play and Find Out Science Projects
Using this book as a guide, you and your favorite budding scientist can have fun exploring the world while you help your child learn about science and develop important science process skills. You may think it’s hard to get young children interested in science, but just watch their eyes light up when they make bouncy blubber or play clay, or when you venture out together in the backyard or local park for a bug-collecting expedition. These are the kind of everyday explorations that give kids a great foundation for a lifetime of science learning.