Final answer:
Burning of Phosphorus is a chemical change, as new substances are formed. Baking a potato, however, is a physical change because no new substances are created, just changes in taste and texture.
Step-by-step explanation:
In science, changes are classified into two main types: Physical or Chemical change. The distinction between these two is based on whether a new substance is formed or not.
Burning of Phosphorus is a chemical change because it results in the formation of new substances, namely Phosphorus pentoxide.
On the other hand, Baking of Potato is a physical change. This is because while the texture and taste of the potato change, no new substances are actually formed.
Learn more about Physical and Chemical Changes