What Is a Suspension? — Overview & Examples

Oil and vinegar can mix, due to vinegar being a suspension of particles in water, and salad dressing is a solution.

Salad dressing is a suspension of oil in vinegar, and is not homogeneous.

Salad dressing is a suspension of vinegar solids in oil, with no water in it.

Vinegar is acidic and therefore able to dissolve the fat molecules in the oil by pulling them apart.