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Learners apply their knowledge from a previous study to identify different liquids--water, corn syrup, and vegetable oil.

In this challenge, learners have to figure out in what order to combine five solutions to change the color from clear, to yellow, to blue, and back to clear.

Use grape juice, baking soda, water and vinegar to make acid and base indicator paper! This activity contains a recipe and instructions for the indicator paper.

In this chemistry challenge, learners combine acids and bases in a universal indicator to create five different colors.