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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
It makes a mixture.
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.
Pure sugar is a substance (compound).
rice pudding a pure substance or a mixture and is it a homogenous or heterogenous
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.
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.
Sugar dissolved in H2O is a mixture
cake
Dextrose is a pure substance.
Its a mixture Because it contains some chemicals hence said to be heterogeneous
Powdered sugar is not a mixture, but a homogenous quantity of a singular molecular compound. It would only be a mixture if it contained other ingredients, for example.
Sugar is a compound, a pure substance, as it only contains sucrose.
It makes a mixture.