The oil and vinegar in italian vinegarette separates because the oil is and the vinegar is since it is mostly water. a) nonpolar, polar b) polar, metallic c) homogeneous, ionic d) hydrophyllic, covalent

A polar substance will not dissolve a nonpolar substance. In the case of oil and vinegar, the vinegar is polar and more dense than the oil, so it settles on the bottom of the container. The oil is nonpolar and less dense, so it doesn't dissolve in the vinegar, and it floats on top.

b) that would be the answer based on my text book

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the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation: