there are 3 unknown substances a, b, and c that need to be classified as an 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?
responses:
substance a is a compound, substance b is an element, and substance c is a mixture.
substance a is an element, substance b is a compound, and substance c is a mixture
substance a is a mixture, substance b is an element, and substance c is a compound
substance a is a compound, substance b is a is a mixture, and substance c is an element
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.
Therefore, the correct classification is: substance a is a mixture, substance b is an element, and substance c is a compound.