Using Color to See How Liquids Combine

Learners add different liquids (water, salt water, alcohol, and detergent solution) to water and observe the different ways the different liquids combine with water. The liquids are colored yellow and the water is colored blue to aid in observing the combinations. After carefully observing the combining liquids in this activity, learners can identify them as unknowns in the related activity, "Using the Combining Test to Identify the Unknown Liquids" from the same resource (see related resources). [Activity is publicly available through a web crawler capture on Archive.org. Activity write-up only, images are unavailable.]