No, it is not. It completely dissolves. If you want to check if a mixture is a colloid shine a beam of light through it. (A flashlight should work, although a laser pointer is best. If you're having trouble getting a thinnish beam with your flashlight take a piece of cardboard or some other opaque material and cut a hole in it. Then shine the flashlight through that.) If you can see the beam of light the mixture is a colloid. Pure water, for example, is not a colloid. I have found that flour and water makes a very nice colloid. Smoke, fog/mist, clouds and honey are some naturally occurring colloids.
Solute. The water it is dissolved in is the solvent.
its a mixture
Food coloring is a solvent.
Yes
It is a mixture.
Both. A mixture is a subset of substances.
This depends on the amount and type of this coloring substance.
Foods are not pure substances.
its a mixture
I believe that you are talking about diffusion.
Food coloring is any substance, liquid or powder, that is added to food or to a drink to change its color. Food coloring is used both in commercial food production and in domestic cooking. The FDA's permitted colors are classified as subject to certification or exempt from certification, both of which are subject to rigorous safety standards prior to their approval and listing for use in foods.
pure substance, propanone
Pure substance
it is a pure substance.... not
Methane is a pure substance.
A pure substance is the same throughout. When a substance is 100% something it is pure.