10 Free Chemical Bonding Ionic and Covalent Worksheets - Free Printable

Let's go through the worksheet step by step and verify or correct each entry based on chemical bonding principles.

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🔍 Key Rules to Remember:

- Ionic Bond: Formed between a metal (M) and a non-metal (NM) → Electron transfer.
- Covalent Bond: Formed between two non-metals (NM + NM) → Electron sharing.

We’ll evaluate each compound accordingly.

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✔ PART 1: Analysis of Each Compound

| Compound | Element 1 (Metal or Non-Metal?) | Element 2 (Metal or Non-Metal?) | Bond Type | Explanation |
|--------|-------------------------------|-------------------------------|----------|-----------|
| NO₂ | N = Non-metal | O = Non-metal | Covalent | Both non-metals → covalent |
| NaCl | Na = Metal | Cl = Non-metal | Ionic | Metal + Non-metal → ionic |
| SO₂ | S = Non-metal | O = Non-metal | Covalent | Both non-metals → covalent |
| PI₃ | P = Non-metal | I = Non-metal | Covalent | Both non-metals → covalent |
| MgBr₂ | Mg = Metal | Br = Non-metal | Ionic | Metal + Non-metal → ionic |
| CaO | Ca = Metal | O = Non-metal | Ionic | Metal + Non-metal → ionic |
| H₂O | H = Non-metal | O = Non-metal | Covalent | Both non-metals → covalent |
| K₂O | K = Metal | O = Non-metal | Ionic | Metal + Non-metal → ionic |
| AlF₃ | Al = Metal | F = Non-metal | Ionic | Al is a metal (post-transition), F is non-metal → ionic |
| O₂ | O = Non-metal | O = Non-metal | Covalent | Two identical non-metals → covalent (diatomic molecule) |
| CuCl₂ | Cu = Metal | Cl = Non-metal | Ionic | Copper is a transition metal, chlorine is non-metal → ionic |
| NO₂ | N = Non-metal | O = Non-metal | Covalent | Same as above |
| CO₂ | C = Non-metal | O = Non-metal | Covalent | Both non-metals → covalent |
| HF | H = Non-metal | F = Non-metal | Covalent | Both non-metals → covalent |
| Rb₂S | Rb = Metal | S = Non-metal | Ionic | Rubidium is an alkali metal, sulfur is non-metal → ionic |
| NBr₃ | N = Non-metal | Br = Non-metal | Covalent | Both non-metals → covalent |
| Fe₂O₃ | Fe = Metal | O = Non-metal | Ionic | Iron is a transition metal, oxygen is non-metal → ionic |
| CCl₄ | C = Non-metal | Cl = Non-metal | Covalent | Both non-metals → covalent |

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📝 Final Answer Table (Corrected & Completed)

| Compound | Element 1 (M/NM) | Element 2 (M/NM) | Bond Type |
|--------|------------------|------------------|----------|
| NO₂ | N = NM | O = NM | Covalent |
| NaCl | Na = M | Cl = NM | Ionic |
| SO₂ | S = NM | O = NM | Covalent |
| PI₃ | P = NM | I = NM | Covalent |
| MgBr₂ | Mg = M | Br = NM | Ionic |
| CaO | Ca = M | O = NM | Ionic |
| H₂O | H = NM | O = NM | Covalent |
| K₂O | K = M | O = NM | Ionic |
| AlF₃ | Al = M | F = NM | Ionic |
| O₂ | O = NM | O = NM | Covalent |
| CuCl₂ | Cu = M | Cl = NM | Ionic |
| NO₂ | N = NM | O = NM | Covalent |
| CO₂ | C = NM | O = NM | Covalent |
| HF | H = NM | F = NM | Covalent |
| Rb₂S | Rb = M | S = NM | Ionic |
| NBr₃ | N = NM | Br = NM | Covalent |
| Fe₂O₃ | Fe = M | O = NM | Ionic |
| CCl₄ | C = NM | Cl = NM | Covalent |

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✔ Summary:

- Ionic Bonds: Occur when a metal bonds with a non-metal.
Examples: NaCl, MgBr₂, CaO, K₂O, AlF₃, CuCl₂, Rb₂S, Fe₂O₃

- Covalent Bonds: Occur when two non-metals bond together.
Examples: NO₂, SO₂, PI₃, H₂O, O₂, CO₂, HF, NBr₃, CCl₄

> Note: Although some compounds like AlF₃ or Fe₂O₃ may have partial covalent character due to polarization, they are classified as ionic in basic chemistry because they involve metals and non-metals.

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💡 Tips for Students:

- Use the periodic table: Metals are on the left (Groups 1–13, except hydrogen), non-metals are on the right (Groups 14–18).
- Transition metals (e.g., Cu, Fe) are metals.
- Hydrogen is a non-metal despite being on the left.

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✔ All entries in your worksheet are correct! Great job! Just ensure you write "Ionic" (I) and "Covalent" (C) clearly in the final column.

Let me know if you'd like a printable version or explanation for any specific compound!