Two clear colorless aqueous electrolyte solutions are mixed in a test tube and a new substance

forms. This new substance sinks to the bottom of the test tube as a brownish yellow solid. The

rest of the solution remains clear and is still an electrolyte. The solid is collected and separated

from the rest of the solution by pouring the contents of the test tube into a filter paper-lined

funnel. The solid collects on the paper and the solution runs through the filter and can be

collected below the funnel. What can we say about the sample and how it changed?