Final answer:
Charlie's action of adding purple crystals to water is a chemical process of dissolution and distribution that does not violate the conservation of matter. This Chemistry concept is presented at a High School level, highlighting the principles of solubility, diffusion, and chemical reactions in various experiments, including the luminescence of a fluorescent solution under UV light.
Step-by-step explanation:
When Charlie puts one purple crystal into each of four beakers of water, we are looking at a concept in Chemistry that involves solubility and diffusion. In this process, the purple crystals likely dissolve and the molecules disperse uniformly through the water, as represented by red dots dispersed everywhere in the second image. This is akin to other chemical processes where atoms or molecules are neither created nor destroyed but are redistributed, according to Dalton's postulates. An example given was the reaction where starting materials consist of green and purple spheres becoming products with the same number of spheres, emphasizing the conservation of matter.
In a related experiment described in the reference material, when fluorescent powder is added to a beaker of water and illuminated under ultraviolet light, the water gives off a bright glow. This demonstrates the effects of solutes in solution and can be an indicator of properties such as concentration and chemical interaction under certain conditions. Another experimental scenario involved adding silver nitrate to a solution, leading to a chemical reaction that produced a precipitate and a color change indicating the presence of a specific salt.