Question

part 2: classify materials directions: place the following materials in the correct column (conductor or insulator). materials: copper, plastic, salt water, glass, aluminum, wood, gold, rubber, human body, iron conductors insulators

Explanation:

Conductors allow the flow of electric current easily due to free - moving electrons. Insulators do not. Copper, salt water, aluminum, gold, human body, iron are conductors as they have mobile charge carriers. Plastic, glass, wood, rubber are insulators as they restrict the flow of electric current.

Answer:

Conductors: Copper, Salt Water, Aluminum, Gold, Human Body, Iron
Insulators: Plastic, Glass, Wood, Rubber