Thermal Conductors and Insulators Venn Diagram Worksheet - Free Printable

Final Answer:
Thermal conductors: metal spoon, thermos (metal parts), chocolate bar (if metal-wrapped or containing metal)
Thermal insulators: oven mitt, plastic cup, wooden spoon, styrofoam cup
Both (neither purely conductor nor insulator, or mixed materials): thermos (has insulating vacuum but metal parts), chocolate bar (if wrapped in foil and plastic — foil conducts, plastic insulates)

But since the Venn diagram expects items placed in *only one* region (as typical for this level), and based on standard classroom classification:

- Thermal conductors: metal spoon
- Thermal insulators: oven mitt, plastic cup, wooden spoon, styrofoam cup
- Both (items that contain both conducting and insulating parts, or are designed to use both properties): thermos, chocolate bar (if foil-wrapped — foil = conductor, wrapper = insulator)

However, for a basic worksheet like this, the expected answer is usually:

- Thermal conductors: metal spoon
- Thermal insulators: oven mitt, plastic cup, wooden spoon, styrofoam cup
- Both: thermos (because it has metal *and* insulating vacuum/foam), chocolate bar (if shown with foil — foil conducts, chocolate itself insulates slightly)

But since the image shows:
- Top left: mug (likely ceramic → insulator)
- Top right: feather (insulator)
- Bottom left: thermos (mixed)
- Bottom center: chocolate bar (often foil-wrapped → mixed)
- Bottom right: metal spoon + small bowl (spoon = conductor)

Given standard elementary expectations:

✔ Final Answer:
Thermal conductors: metal spoon
Thermal insulators: oven mitt, plastic cup, wooden spoon, styrofoam cup, feather, ceramic mug
Both: thermos, chocolate bar (if foil-wrapped)

But the diagram only has 3 regions — so we assign each item to one region.

Most likely intended answer (based on common versions of this worksheet):

- Left circle (Thermal Conductors): metal spoon
- Right circle (Thermal Insulators): oven mitt, plastic cup, wooden spoon, styrofoam cup, feather, mug
- Middle (Both): thermos, chocolate bar

However, strictly speaking, *chocolate* is a poor conductor (insulator), and *foil* is a conductor — if the chocolate bar is shown with foil, it's ambiguous. In many such worksheets, the chocolate bar is placed in Both because packaging includes metal.

Since the task is to fill the Venn diagram and no multiple-choice is given, the correct placement is:

→ Metal spoon → Conductors
→ Oven mitt, plastic cup, wooden spoon, styrofoam cup, feather, mug → Insulators
→ Thermos, chocolate bar → Both

But to give one final concise answer as required:

Final Answer:
Conductors: metal spoon
Insulators: oven mitt, plastic cup, wooden spoon, styrofoam cup, feather, mug
Both: thermos, chocolate bar