When salt dissolves in water what type of substance is formed

A mixture

Explanation:

When salt dissolves in water mixture is formed.

It can be separated by evaporating then condensing the water.

Both substances retain their old property.

Hope this helps

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.