Answer: Vinegar and oil don't mix or dissolve in same solution, and this makes them insoluble
Explanation:
Vinegar and oil don't mix or dissolve in same solution, and this makes them insoluble, that's why they must be shared so the layer of oil or vinegar doesn't remain.
An insoluble solution is a solution which the two element which makes up the compound don't dissolve themselves
Answer: Trade was also important to the economies of ancient civilizations. When Egyptians first settled along the Nile, the resources of the river supplied them with what they needed to survive.
