Red-Cabbage Color Magic
Purple changes to pink/red or blue/green.
Teaching & key ideas
What you do: Add indicator to the different liquids.
What students see: Purple changes to pink/red or blue/green.
Why it works: Plant pigments change structure and color depending on pH.
Question to ask: Did we add food coloring?
Lesson flow
Predict → demonstrate → observe → briefly explain → ask: Did we add food coloring?