Sugar dissolved in H2O is a mixture
Pure sugar is a compound, which is a pure substance. If you dissolve sugar in water, you will have a homogeneous mixture, which is a solution.
Pure sugar is a substance (compound).
mixture
There are many types of sugar but, if you are describing one type of sugar and not a mixture of many sugars it would be a pure substance.
cake
Dextrose is a pure substance.
Sugar is a compound, a pure substance, as it only contains sucrose.
It makes a mixture.
If it's without milk or sugar - it's a pure substance.
Refined substance can be a pure substance depending on the type of sugar used. If the refined sugar is white, then it is a pure substance. If it the refined sugar is brown, then it is not a pure substance.
sugar (generally glucose) is a pure organic compound, not mixture.
If the sugar does not dissolve it the oil, then it is not