Answer:1.Wine often contains sediment, which consists of particulate matter that forms during the fermentation process or as the wine ages. This sediment can affect the wine's clarity and taste; thus, it's typically decanted before serving to enhance the drinking experience.2.A salt solution is created by dissolving salt (sodium chloride) in water, forming a homogeneous mixture where salt ions are evenly distributed throughout the liquid. This solution is used in various applications, from culinary to medicinal, due to its ability to preserve food and enhance flavors.3.When sand is mixed with saltwater, the sand remains as a separate, insoluble component, and does not dissolve. This separation can be useful in environmental and industrial scenarios, where filter techniques are employed to capture sand from saline environments, showcasing the different physical properties of these materials.