system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Classify each of the following as a conductor or insulator: steel, copper, rubber, wood, cardboard, aluminum


assistant
Steel: Conductor
Copper: Conductor
Rubber: Insulator
Wood: Insulator
Cardboard: Insulator
Aluminum: Conductor