Answer :
Italian dressing contains olive oil and vinegar, which will separate out from each other if left to sit. this makes the dressing a heterogeneous mixture.
This kind of combination has all of its components well combined, and all of its particles are visible with a microscope. The parts are simple to recognize, and more than one phase is visible with the unaided eye.
Important details about this kind of mixture: The distribution of particles is not uniform. Variable composition, Examples include pizza and ocean. Its composition is not constant. There are at least two stages. Physical separation is possible. Using sand and sodium chloride as an example
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