Are these mixtures homogenous or heterogeneous?

Question

mixture of oil and vinegar salad dressing

seawater

soda pop

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I know that seawater is probably heterogenous, and that the oil-vinegar mixture may be hetero. as well, but i just wanted to verify my responses.

Thanks!

Answer 1

The rule is: a homogeneous solution is always uniform and transparent.
mixture of oil and vinegar salad dressing: heterogeneous
seawater: homogeneous once you precipitate out insoluble solids/ liquids
soda pop: homogeneous when you put it there for a long time till no bubbles, heterogeneous when there is any bubbles.