More physical than chemical but it is still bad for you so you shouldn't have to much i a week.
No, it doesn't change what it is.
physical change You are making a mixture of the icing and food coloring, which is a physical change.
Coloring causes only a physical change to icing because it does not alter the chemical characteristics of the icing.
by adding orange food coloring to white icing
This is not a chemical change. The food colouring forms part of the mixture on the icing sugar + flavouring + water + colouring. A chemical change requires there to be a change in the nature of the ingredients eg cooking eggs.
Royal Icing is not a brand of icing to be purchased. It is made by using a recipe. It dries to a hard white, shiny gloss. Adding food coloring will make different colors.
Food Coloring is used to change the color of something such as paper, water, cakes, icing, etc.
food coloring
Using white icing you will have to add blue food coloring to it.
brown food coloring
Begin with a white icing. Then add a few drops of blue food coloring. If on hand, add one drop of green OR red food coloring to darken the color if desired. COntinue adding bue food coloring and stirring well until you reach the color of blue that you desire.
You can add red and blue food coloring to white frosting. For a more indigo-ish color, use more blue than red. For a redder, more burgundy-ish looking purple, use more red dye. What I normally like to do is use 6 drops of red and 4 drops of blue to get a purple.
you don't have to put water in food coloring you can put it in icing or cake batter