* Physical Change: A physical change alters the appearance or form of a substance but doesn't change its chemical composition.
* Chemical Change: A chemical change results in the formation of new substances with different chemical properties.
When you mix food coloring and water:
* The food coloring particles dissolve in the water. This means they spread out evenly throughout the water, but they don't change their chemical makeup.
* You can separate the food coloring from the water by evaporation. This further indicates that no new substances were formed.
In summary: Food coloring dissolves in water, creating a mixture, but no new substances are formed. This is a physical change, not a chemical reaction.