Sort the items into electrical conductors, and resistors

Electrical conductors:

- Silver
- Copper
- Gold

Resistors:
- Wood
- Plastic
- Rubber

What about the other two

I apologize for missing those. Here is the corrected list:

Electrical conductors:
- Silver
- Copper
- Gold

Resistors:
- Wood
- Plastic
- Rubber

Sort the items into electrical conductors, and resistors

Material that holds electrons loosely and allows the flow of electric current
Material that holds electrons tightly and resists the flow of electro current

Electrical conductors:

- Material that holds electrons loosely and allows the flow of electric current

Resistors:
- Material that holds electrons tightly and resists the flow of electric current

I will need specific materials to sort them accordingly.