Why does vinegar separate from oil?

Related questions

1. Why does oil float on vinegar?
2. Is it dangerous to boil vinegar?
3. Is oil and vinegar homogeneous or heterogeneous?
4. What kind of mixture is vinegar?
5. Do you add oil or vinegar first?
6. Does olive oil increase weight?
7. What does vinegar do in baking?
8. Is vinegar an acid or base?
9. What happens to vinegar when boiled?
10. What is it called when oil and vinegar separate?

Tags

1. #salad
2. #dressing
3. #density
4. #overtime
5. #settle
6. #separate
7. #mixture
8. #because
9. #compared
10. #higher
11. #which
12. #float
13. #suspension
14. #particles
15. #vinegar
16. #dissolve
17. #layers