Caesar salad is it a mechanical mixture?

Caesar salad is not a mechanical mixture. Here's why:

* Mechanical mixtures are made up of different substances that are physically combined but not chemically bonded. They can be easily separated, like sand and water.

* Caesar salad involves ingredients that are chemically changed during preparation. The dressing, which is made with raw egg yolk, olive oil, lemon juice, and garlic, creates an emulsion. This means the oil and water (from the lemon juice and egg yolk) are combined through a chemical process, not simply a physical mixing.

Therefore, Caesar salad is a heterogeneous mixture with ingredients that are not uniformly distributed, but it's not a mechanical mixture because it involves chemical reactions.