Mixing Materials-Remedial Class

What is the combination of two or more materials?

What kind of mixtures are these granola bars? Solid and Solid/Solid and Liquid/Liquid and Liquid?

How do you call the situation when a substance breaks out and spread out evenly in liquid?

I put some salt into a glass of water, after stirring it, I cannot see the salt anymore because the salt ... in the water.