SIOUX CITY (KTIV) – Gather your supplies! Available May 6th, in next week’s episode we will use everyday materials to explore pH and how it changes between acids and bases.
Download the experiment instructions HERE!
Blackberries contain a chemical class called anthocyanidins, they are what gives most berries a red, purple, or blue coloring. Anthocyanidins also happen to be pH sensitive, meaning they change color when in contact with acids or bases.
A substance that is more acidic will have a lower pH causing the berry juice to turn more reddish, while a substance that is basic will have a higher pH causing the berry juice to turn more blueish.
This is what happened with our experiment, the pH sensitive stuff in the blackberries reacted with the base, or baking soda with a high pH, and turned our writing into a darker, bluer hue.
Submit photos or videos of your students participating to connect@ktiv.com.
For more fun experiments, check back on Tuesdays, here on ktiv.com or on the KTIV News 4 Now app (available on Apple TV, Android TV, Roku, and Fire TV).
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