"Candy Compounds worksheet for teaching chemical bonding using gumdrop models and electron dot structures."

Let's solve this "Candy Compounds" worksheet step by step. This activity uses a fun, hands-on approach to teach chemical bonding using gumdrop models (representing atoms) and toothpicks (representing bonds). We’ll fill in each section for the four compounds: H₂, NaCl, H₂O, and Na₂O.

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🔬 Instructions Recap:

For each compound:
1. List the atoms and number of each.
2. Identify the type of bond (ionic or covalent).
3. Draw and color the gumdrop model (already provided in outline).
4. Draw the dot structure (electron dot diagram), showing electron transfer or sharing.

We'll complete all four rows.

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## ✔ 1. H₂ (Hydrogen gas)

| Information | Type of Bond | Gumdrop Model | Dot Structure |
|------------|--------------|----------------|----------------|
| 2 Hydrogen atoms | Covalent | (Two circles connected by a line) | H:H or H—H with shared electrons |

Explanation:

- Atoms: 2 hydrogen atoms.
- Bond Type: Covalent – two nonmetals share electrons.
- Gumdrop Model: Two identical spheres (same color) connected by a stick.
- Dot Structure:
```
H : H
```
Each H has one valence electron; they share to form a single covalent bond.

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## ✔ 2. NaCl (Sodium chloride)

| Information | Type of Bond | Gumdrop Model | Dot Structure |
|------------|--------------|----------------|----------------|
| 1 Sodium (Na), 1 Chlorine (Cl) | Ionic | (Two different-colored circles connected) | Na⁺ Cl⁻ with electron transfer |

Explanation:

- Atoms: 1 sodium (Na), 1 chlorine (Cl).
- Bond Type: Ionic – metal (Na) transfers electron to nonmetal (Cl).
- Gumdrop Model: One color for Na, another for Cl, connected (but no shared pair — just represents ions).
- Dot Structure:
```
Na• + •Cl: → Na⁺ [:Cl:]⁻
```
- Sodium loses 1 electron → becomes Na⁺.
- Chlorine gains 1 electron → becomes Cl⁻ (now has full octet).

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## ✔ 3. H₂O (Water)

| Information | Type of Bond | Gumdrop Model | Dot Structure |
|------------|--------------|----------------|----------------|
| 2 Hydrogen atoms, 1 Oxygen atom | Covalent | (Central circle bonded to two others, bent shape) | H–O–H with lone pairs on oxygen |

Explanation:

- Atoms: 2 hydrogen, 1 oxygen.
- Bond Type: Covalent – all nonmetals share electrons.
- Gumdrop Model: Central oxygen (larger sphere) bonded to two hydrogens (smaller spheres), forming a bent shape.
- Dot Structure:
```
H
\
O:
/ \
H (two lone pairs on O)
```
- Oxygen has 6 valence electrons → shares 2 with two H atoms.
- Each H shares 1 electron → forms two single covalent bonds.
- Oxygen has two lone pairs (4 electrons not shared).

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## ✔ 4. Na₂O (Sodium oxide)

| Information | Type of Bond | Gumdrop Model | Dot Structure |
|------------|--------------|----------------|----------------|
| 2 Sodium atoms, 1 Oxygen atom | Ionic | (One central circle bonded to two others) | 2Na⁺ + [:O:]²⁻ |

Explanation:

- Atoms: 2 sodium (Na), 1 oxygen (O).
- Bond Type: Ionic – metals (Na) transfer electrons to nonmetal (O).
- Gumdrop Model: Oxygen in center, two sodiums attached (different colors).
- Dot Structure:
```
Na• + •Na• + •O• → Na⁺ Na⁺ [:O:]²⁻
```
- Each Na loses 1 electron → becomes Na⁺.
- Oxygen gains 2 electrons → becomes O²⁻.
- Oxygen now has 8 electrons (full octet).

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## 🧩 Final Completed Table:

| Information | Type of Bond | Gumdrop Model | Dot Structure |
|-----------|--------------|----------------|----------------|
| H₂<br>2 Hydrogen atoms | Covalent | ○—○ | H:H |
| NaCl<br>1 Na, 1 Cl | Ionic | ○—○ | Na⁺ [:Cl:]⁻ |
| H₂O<br>2 H, 1 O | Covalent | □<br> / \ <br> ○ ○ | H–O–H with two lone pairs on O |
| Na₂O<br>2 Na, 1 O | Ionic | □<br> / \ <br> ○ ○ | 2Na⁺ + [:O:]²⁻ |

> 💡 Note: In the gumdrop model, you’d use different colors:
> - Hydrogen: small yellow/green
> - Oxygen: red
> - Sodium: silver/gray
> - Chlorine: green/blue
> *(Colors depend on your kit, but distinguish metals from nonmetals)*

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## ✔ Summary of Bond Types:
- Covalent Bonds: Occur between nonmetals → sharing of electrons (H₂, H₂O).
- Ionic Bonds: Occur between metal and nonmetal → transfer of electrons (NaCl, Na₂O).

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Let me know if you'd like this formatted as a printable PDF or want help coloring the gumdrop models!