Sort objects into conductors and insulators on this educational worksheet.

Let's solve this step by step.

Understanding Conductors and Insulators:

- Conductors are materials that allow electricity to flow through them easily. They are usually made of metals.
- Insulators are materials that resist the flow of electricity. They do not conduct electricity well.

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List of Objects:

1. nail
2. piece of string
3. paperclip
4. metal spoon
5. ruler
6. pencil
7. toy car
8. 50-peso bill
9. 1 peso coin
10. piece of wood
11. aluminum foil
12. key
13. plastic spoon
14. piece of card
15. piece of paper
16. steel wool

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Step-by-step Classification:

#### ✔ Conductors (allow electricity to pass):
These are typically made of metal or contain metal:

1. nail – Made of metal (usually iron or steel) → Conductor
2. paperclip – Usually made of steel → Conductor
3. metal spoon – Metal → Conductor
4. 1 peso coin – Metal (copper/nickel alloy) → Conductor
5. aluminum foil – Aluminum is a metal → Conductor
6. key – Metal → Conductor
7. steel wool – Made of fine steel strands → Conductor
8. toy car – Likely has metal parts (especially if it’s a metal toy), but *if* it's plastic, it may be an insulator. However, in science contexts, toy cars are often assumed to have metal components unless specified otherwise. But since it's ambiguous, let's consider most toy cars as having metal parts → Conductor *(Note: If it's entirely plastic, it might be an insulator, but we'll assume typical construction)*
9. pencil – The lead is actually graphite (a form of carbon), which is a conductor. But the outer casing is wood (insulator). However, in science experiments, pencils are often considered conductors because graphite conducts electricity. So → Conductor

> Wait — let's clarify:
> - The graphite core of a pencil conducts electricity.
> - But the wooden casing does not.
> - Since the pencil can conduct when tested with its graphite core, it is generally classified as a conductor in such activities.

So, pencil → Conductor

Now, what about the ruler? It depends on material:
- If it's a plastic ruler, it's an insulator.
- If it's metal, it's a conductor.
But most rulers are plastic or wood → likely insulator

Let’s go back.

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Final Decision Based on Common Materials:

| Object | Material | Classification |
|-------|---------|----------------|
| nail | metal (iron/steel) | Conductor |
| piece of string | cotton/nylon | Insulator |
| paperclip | steel | Conductor |
| metal spoon | metal | Conductor |
| ruler | plastic/wood | Insulator |
| pencil | graphite (core) + wood | Conductor (due to graphite) |
| toy car | usually metal/plastic | Conductor (assuming metal body) |
| 50-peso bill | paper/cotton | Insulator |
| 1 peso coin | metal | Conductor |
| piece of wood | wood | Insulator |
| aluminum foil | aluminum | Conductor |
| key | metal | Conductor |
| plastic spoon | plastic | Insulator |
| piece of card | cardboard/paper | Insulator |
| piece of paper | paper | Insulator |
| steel wool | steel | Conductor |

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✔ Final List:

#### Conductors:
1. nail
2. paperclip
3. metal spoon
4. pencil
5. 1 peso coin
6. aluminum foil
7. key
8. steel wool
9. toy car
10. (Wait — did we miss one?) Let's count:

We have 10 objects listed above as conductors?

Wait — let’s recount:

From list:
- nail ✔
- paperclip ✔
- metal spoon ✔
- pencil ✔
- 1 peso coin ✔
- aluminum foil ✔
- key ✔
- steel wool ✔
- toy car ✔
- That's 9

What about ruler? Probably not.

But wait — is there another conductor?

Wait — "piece of string" — no

Let’s recheck:

Actually, toy car might be ambiguous. If it's a plastic toy car, it could be an insulator.

But in school science labs, toy cars used in conductivity tests are often metal or have metal parts.

Similarly, pencil — graphite conducts → conductor

But ruler — if it's plastic or wooden → insulator

So let’s stick with:

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✔ Final Answer:

#### Conductors:
1. nail
2. paperclip
3. metal spoon
4. 1 peso coin
5. aluminum foil
6. key
7. steel wool
8. pencil
9. toy car

→ That’s 9 conductors

Wait — we have 16 items total.

So insulators = 16 - 9 = 7

Let’s list insulators:

#### Insulators:
1. piece of string
2. ruler
3. 50-peso bill
4. piece of wood
5. plastic spoon
6. piece of card
7. piece of paper

Yes — that’s 7.

Now check:
- pencil → conductor (graphite)
- toy car → conductor (assumed metal)
- ruler → insulator (plastic/wood)
- 50-peso bill → paper → insulator
- piece of wood → insulator
- plastic spoon → insulator
- piece of card → insulator
- piece of paper → insulator
- piece of string → insulator

All accounted for.

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✔ Final Sorting:

#### Conductor:
1. nail
2. paperclip
3. metal spoon
4. 1 peso coin
5. aluminum foil
6. key
7. steel wool
8. pencil
9. toy car

#### Insulator:
1. piece of string
2. ruler
3. 50-peso bill
4. piece of wood
5. plastic spoon
6. piece of card
7. piece of paper

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🟩 Fill in the Table:

```
Conductor Insulator
----------------------------------- ----------------------------
nail piece of string
paperclip ruler
metal spoon 50-peso bill
1 peso coin piece of wood
aluminum foil plastic spoon
key piece of card
steel wool piece of paper
pencil (empty)
toy car (empty)
```

Wait — there are 5 rows × 2 columns = 10 boxes under "Conductor", but only 9 conductors.

Similarly, Insulator has 5×2 = 10 boxes, but only 7 insulators.

So we can leave the extra boxes blank.

But perhaps the worksheet expects all to be filled.

Wait — maybe I miscounted.

Let’s double-check the original list:

Original list:

1. nail
2. piece of string
3. paperclip
4. metal spoon
5. ruler
6. pencil
7. toy car
8. 50-peso bill
9. 1 peso coin
10. piece of wood
11. aluminum foil
12. key
13. plastic spoon
14. piece of card
15. piece of paper
16. steel wool

✔ Total: 16 items.

Our classification:

Conductors (9):
- nail
- paperclip
- metal spoon
- 1 peso coin
- aluminum foil
- key
- steel wool
- pencil
- toy car

Insulators (7):
- piece of string
- ruler
- 50-peso bill
- piece of wood
- plastic spoon
- piece of card
- piece of paper

But wait — "pencil" — is it really a conductor?

Let’s confirm:

👉 Graphite (the "lead") is a conductor of electricity. In classroom experiments, pencils are often used to show conductivity. So yes, pencil → conductor.

And toy car — if it's a small toy, it might be plastic. But in many educational contexts, it's assumed to be metal.

Alternatively, maybe the toy car is made of plastic? Then it would be an insulator.

But without specification, we assume typical toy car used in such exercises is metal.

However, to be safe, let’s consider:

- Toy car: Could be either. But if it’s a plastic toy car, it's an insulator.

But in most science kits, toy cars used in circuits are metal.

But let’s look at the list again.

Another possibility: "ruler" — if it's a metal ruler, it would be a conductor. But usually, rulers are plastic or wood.

So likely insulator.

But what about the pencil?

The pencil is tricky.

Many sources classify pencils as conductors due to graphite.

For example: [https://www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_pencil](https://www.sciencebuddies.org/science-fair-projects/project-ideas/Elec_pencil)

So yes, pencil is a conductor.

So our list stands.

But we have 9 conductors, 7 insulators.

But the table has 10 boxes per column.

So we can fill only 9 in conductor, 7 in insulator.

That’s acceptable.

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✔ Final Answer:

#### Conductor:
1. nail
2. paperclip
3. metal spoon
4. 1 peso coin
5. aluminum foil
6. key
7. steel wool
8. pencil
9. toy car

#### Insulator:
1. piece of string
2. ruler
3. 50-peso bill
4. piece of wood
5. plastic spoon
6. piece of card
7. piece of paper

---

✔ How to Fill the Table:

Conductor Column (left side):
- Row 1: nail, paperclip
- Row 2: metal spoon, 1 peso coin
- Row 3: aluminum foil, key
- Row 4: steel wool, pencil
- Row 5: toy car, (blank)

Insulator Column (right side):
- Row 1: piece of string, ruler
- Row 2: 50-peso bill, piece of wood
- Row 3: plastic spoon, piece of card
- Row 4: piece of paper, (blank)
- Row 5: (blank), (blank)

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✔ Summary:

| Conductor | Insulator |
|------------------------|--------------------------|
| nail | piece of string |
| paperclip | ruler |
| metal spoon | 50-peso bill |
| 1 peso coin | piece of wood |
| aluminum foil | plastic spoon |
| key | piece of card |
| steel wool | piece of paper |
| pencil | |
| toy car | |

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🔍 Explanation:

- Metals (nail, paperclip, spoon, coin, key, aluminum foil, steel wool) are good conductors.
- Graphite in pencil conducts electricity → conductor.
- Toy car is assumed to be metallic → conductor.
- Plastic, wood, paper, string, card, bills are poor conductors → insulators.

This is based on standard science education practices.

✔ Final Answer Submitted.