Using a uv torch & gel that fluoresces (very CSI) we tested the importance of washing hands with soap & water & not just sprinkling hands with water. The bacteria on our hands showed up under the UV lights.
Using a cornstarch & water mix we tested how a substance can be both a liquid & a solid depending on if a force is applied.
Using a red cabbage indicator(purple) we tested how the color changes associated with PH using baking soda (a base –blue color change) & lemon juice (an acid –a red color change) & water (neutral –no color change) We learned that acidic drinks like 7UP can really damage your teeth!!