Solved + + WORKSHEET: Chemical Bonding - Ionic & Covalent! | Chegg.com - Free Printable

Absolutely! Let’s solve Part 1 of this worksheet step by step.

---

🔁 REMINDER (from the worksheet):

- Ionic Bond: Between a Metal + Non-Metal → (M + NM)
- Covalent Bond: Between a Non-Metal + Non-Metal → (NM + NM)

We need to:
1. Identify if each element in the compound is a metal (M) or non-metal (NM)
2. Determine the bond type based on the combination

---

Let’s go row by row:

---

#### 1. NO₂
- Element 1: N = non-metal ✔ (given)
- Element 2: O = non-metal ✔ (given)
- Bond Type: Covalent (NM + NM)

✔ Already filled correctly.

---

#### 2. PI₃
- Element 1: P (Phosphorus) → non-metal
- Element 2: I (Iodine) → non-metal
- Bond Type: Covalent (NM + NM)

---

#### 3. MgBr₂
- Element 1: Mg (Magnesium) → metal
- Element 2: Br (Bromine) → non-metal
- Bond Type: Ionic (M + NM)

---

#### 4. CaO
- Element 1: Ca (Calcium) → metal
- Element 2: O (Oxygen) → non-metal
- Bond Type: Ionic (M + NM)

---

#### 5. H₂O
- Element 1: H (Hydrogen) → non-metal *(Note: Hydrogen is usually treated as a non-metal in bonding contexts)*
- Element 2: O (Oxygen) → non-metal
- Bond Type: Covalent (NM + NM)

---

#### 6. K₂O
- Element 1: K (Potassium) → metal
- Element 2: O (Oxygen) → non-metal
- Bond Type: Ionic (M + NM)

---

#### 7. AlF₃
- Element 1: Al (Aluminum) → metal
- Element 2: F (Fluorine) → non-metal
- Bond Type: Ionic (M + NM)

*(Note: Aluminum fluoride has significant ionic character, though some covalent character exists — for high school level, it’s considered ionic.)*

---

#### 8. O₂
- Element 1: O → non-metal
- Element 2: O → non-metal
- Bond Type: Covalent (NM + NM) — diatomic molecule

---

#### 9. CuCl₂
- Element 1: Cu (Copper) → metal
- Element 2: Cl (Chlorine) → non-metal
- Bond Type: Ionic (M + NM)

---

#### 10. NO₂ *(Already done above — same as #1)*
Wait — looks like duplicate? But let’s assume it’s intentional.
- N = non-metal
- O = non-metal
- Bond Type: Covalent

---

#### 11. CO₂
- Element 1: C (Carbon) → non-metal
- Element 2: O (Oxygen) → non-metal
- Bond Type: Covalent (NM + NM)

---

#### 12. HF
- Element 1: H (Hydrogen) → non-metal
- Element 2: F (Fluorine) → non-metal
- Bond Type: Covalent (NM + NM) — *though highly polar, still classified as covalent*

---

#### 13. Rb₂S
- Element 1: Rb (Rubidium) → metal
- Element 2: S (Sulfur) → non-metal
- Bond Type: Ionic (M + NM)

---

#### 14. NBr₃
- Element 1: N (Nitrogen) → non-metal
- Element 2: Br (Bromine) → non-metal
- Bond Type: Covalent (NM + NM)

---

#### 15. Fe₂O₃
- Element 1: Fe (Iron) → metal
- Element 2: O (Oxygen) → non-metal
- Bond Type: Ionic (M + NM)

---

#### 16. CCl₄
- Element 1: C (Carbon) → non-metal
- Element 2: Cl (Chlorine) → non-metal
- Bond Type: Covalent (NM + NM)

---

## ✔ FINAL ANSWER TABLE:

| Compound | Element 1 (metal or non-metal?) | Element 2 (metal or non-metal?) | Bond Type |
|----------|----------------------------------|----------------------------------|-------------|
| NO₂ | N = non-metal | O = non-metal | covalent |
| PI₃ | P = non-metal | I = non-metal | covalent |
| MgBr₂ | Mg = metal | Br = non-metal | ionic |
| CaO | Ca = metal | O = non-metal | ionic |
| H₂O | H = non-metal | O = non-metal | covalent |
| K₂O | K = metal | O = non-metal | ionic |
| AlF₃ | Al = metal | F = non-metal | ionic |
| O₂ | O = non-metal | O = non-metal | covalent |
| CuCl₂ | Cu = metal | Cl = non-metal | ionic |
| NO₂ | N = non-metal | O = non-metal | covalent |
| CO₂ | C = non-metal | O = non-metal | covalent |
| HF | H = non-metal | F = non-metal | covalent |
| Rb₂S | Rb = metal | S = non-metal | ionic |
| NBr₃ | N = non-metal | Br = non-metal | covalent |
| Fe₂O₃ | Fe = metal | O = non-metal | ionic |
| CCl₄ | C = non-metal | Cl = non-metal | covalent |

---

## 📝 EXPLANATION SUMMARY:

- Metals are typically found on the left side and middle of the periodic table (Groups 1–2, transition metals).
- Non-metals are on the right side (Groups 13–18, excluding metalloids like B, Si, Ge, As, Sb, Te — but for this level, we treat them as non-metals unless specified).
- Hydrogen is tricky — it’s a non-metal, even though it can sometimes act like a metal under extreme conditions.
- If both elements are non-metals → covalent bond
- If one is metal, one is non-metal → ionic bond

This worksheet helps reinforce the basic rule for predicting bond types based on element categories — a foundational concept in chemistry!

Let me know if you’d like help with Part 2 or any explanations for specific compounds! 😊