Is confectioners sugar pure icing or mixture?

Confectioners' sugar is not pure icing. It's a powdered form of sugar that's been finely ground and often mixed with cornstarch to prevent clumping.

Here's the breakdown:

* Confectioners' sugar (powdered sugar): A finely ground sugar, often with added cornstarch.

* Icing: A mixture that usually includes powdered sugar, liquid (like water, milk, or egg whites), and sometimes other ingredients like butter, flavorings, or colorings.

So, confectioners' sugar is a key ingredient in making icing, but it's not the icing itself.