There are 3 unknown substances A, B, and C that need to be classified as element, mixture or compound.. Substance A can be broken down by a physical change. Substance B cannot be broken down by a chemical or physical change. Substance C can only be broken down by a chemical change. How would you classify these substances based on the given information?
Based on the given information:
Substance A can be broken down by a physical change, so it is a mixture.
Substance B cannot be broken down by a chemical or physical change, so it is an element.
Substance C can only be broken down by a chemical change, so it is a compound.