Purple is defined as a deep, rich shade between crimson and violet, or, more broadly, as a range of hues of color between blue and red, or as a dark color that is a blend of red and blue.
Dry ice is the solid form of carbon dioxide (CO2), a molecule consisting of a single carbon atom bonded to two oxygen atoms. Dry ice is colorless, non-flammable, with a sour zesty odor, and can lower the pH of a solution when dissolved in water, forming carbonic acid (H2CO3).
Regular ice is frozen water. When it gets warm, it melts and turns from solid ice back into liquid water. If you leave an ice cube out on the counter and come back a while later, you'll find a wet puddle where the ice cube used to be. Dry ice, on the other hand, is frozen carbon dioxide. Carbon dioxide is a gas.