It depends on the chemical:
* Some chemicals react with salt: This means they change their chemical composition when combined with salt. For example, salt can react with acids to form hydrochloric acid and a new salt.
* Some chemicals dissolve in salt water: Salt dissolves in water, creating a saltwater solution. Other substances can then dissolve in this solution, like sugar or certain metals.
* Some chemicals don't mix with salt water: Oil and water don't mix, and oil won't mix well with salt water either.
* Some chemicals react with salt in specific ways: For example, salt can be used to precipitate some metals out of solution.
What does "mix well" mean?
* Dissolving: Does the chemical disappear into the salt solution?
* Reacting: Does the chemical change its composition when mixed with salt?
* Separating: Does the chemical form layers or precipitate out of the solution when mixed with salt?
To answer your question more specifically, please tell me:
* What specific chemicals are you interested in?
* What do you mean by "mix well"?
With more information, I can give you a more precise answer about how salt mixes with other chemicals.