both
It is a mixture.
It would be an mixture
A mixture of oil and water is a mixture, not an element. If by substance you mean not a pure substance (element or compound), then oil and water would be a substance (that is a mixture). If you mean oil and water separately, then oil is a mixture of hydrocarbons, and water is a compound (pure substance).
it is a mixture
Oil is a mixture of hydrocarbons.
No: It is a mixture.
No. It is a mixture.
Pure vegetable or olive oil does not contain gluten.
It can be either. It is very often soybean oil, but can be a mixture of several. That is if it is labeled just cooking oil. If it is corn, canola, olive or some stated type, it should only be that kind.
it is a solution because no particles are visible in it. pure substances are like elements because they are at there smallest form. parts are visible i mixture and easy to separate.
If the sugar does not dissolve it the oil, then it is not
This is not a pure substance, it's a mixture, so there's none