Handwritten answers on a chemistry worksheet classifying chemical reactions.

The image you've uploaded contains a worksheet titled "Classifying Chemical Reactions", where 14 chemical reactions are listed, and the task is to classify each as synthesis, decomposition, single replacement, or double replacement. The answers have already been handwritten next to each reaction.

Let’s go through each reaction and verify the classifications with explanations:

---

🔹 1. 2KClO₃ → 2KCl + 3O₂

- Classification: Decomposition ✔
- Explanation: A single compound (KClO₃) breaks down into two simpler substances (KCl and O₂). This is a classic decomposition reaction.

---

🔹 2. HCl + NaOH → NaCl + H₂O

- Classification: Double Replacement ✔
- Explanation: The ions from two compounds (HCl and NaOH) swap partners to form NaCl and H₂O. This is an acid-base neutralization, a type of double replacement.

---

🔹 3. Mg + 2HCl → MgCl₂ + H₂

- Classification: Single Replacement ✔
- Explanation: Magnesium (Mg), a more reactive metal, replaces hydrogen in HCl. One element replaces another in a compound.

---

🔹 4. 2H₂ + O₂ → 2H₂O

- Classification: Synthesis ✔
- Explanation: Two elements combine to form a single compound (water). This is a synthesis (combination) reaction.

---

🔹 5. 2Al + 3NiBr₂ → 2AlBr₃ + 3Ni

- Classification: Single Replacement ✔
- Explanation: Aluminum (Al) replaces nickel (Ni) in NiBr₂ because Al is more reactive. One element displaces another.

---

🔹 6. 4Al + 3O₂ → 2Al₂O₃

- Classification: Synthesis ✔
- Explanation: Aluminum reacts with oxygen to form aluminum oxide. Elements combine to form one compound.

---

🔹 7. 2NaCl → 2Na + Cl₂

- Classification: Decomposition ✔
- Explanation: Sodium chloride breaks down into elemental sodium and chlorine gas. A compound breaks into its elements.

---

🔹 8. CaCl₂ + F₂ → CaF₂ + Cl₂

- Classification: Single Replacement ✔
- Explanation: Fluorine (F₂), being more reactive than chlorine, replaces Cl⁻ in CaCl₂ to form CaF₂ and Cl₂.

---

🔹 9. AgNO₃ + KCl → AgCl + KNO₃

- Classification: Double Replacement ✔
- Explanation: Silver (Ag⁺) pairs with Cl⁻, and K⁺ pairs with NO₃⁻. Ions exchange partners.

---

🔹 10. N₂ + 3H₂ → 2NH₃

- Classification: Synthesis ✔
- Explanation: Nitrogen and hydrogen gases combine to form ammonia. Two elements form one compound.

---

🔹 11. 2H₂O₂ → 2H₂O + O₂

- Classification: Decomposition ✔
- Explanation: Hydrogen peroxide breaks down into water and oxygen gas. A compound decomposes into simpler substances.

---

🔹 12. (NH₄)₂SO₄ + Ba(NO₃)₂ → BaSO₄ + 2NH₄NO₃

- Classification: Double Replacement ✔
- Explanation: Ammonium sulfate and barium nitrate exchange ions: Ba²⁺ pairs with SO₄²⁻, and NH₄⁺ pairs with NO₃⁻.

---

🔹 13. MgI₂ + Br₂ → MgBr₂ + I₂

- Classification: Single Replacement ✔
- Explanation: Bromine (Br₂) replaces iodine in MgI₂ because bromine is more reactive than iodine (in halogen group).

---

🔹 14. SO₃ + H₂O → H₂SO₄

- Classification: Synthesis ✔
- Explanation: Sulfur trioxide reacts with water to form sulfuric acid. Two substances combine into one.

---

✔ Summary of Classifications:

| Reaction | Type |
|--------|------|
| 1 | Decomposition |
| 2 | Double Replacement |
| 3 | Single Replacement |
| 4 | Synthesis |
| 5 | Single Replacement |
| 6 | Synthesis |
| 7 | Decomposition |
| 8 | Single Replacement |
| 9 | Double Replacement |
| 10 | Synthesis |
| 11 | Decomposition |
| 12 | Double Replacement |
| 13 | Single Replacement |
| 14 | Synthesis |

---

🟩 Final Answer:

All the handwritten answers on the worksheet are correct! Each classification matches the reaction type based on the pattern of reactants and products.

✔ You did a great job! All your answers are accurate.