Types of Chemical Reactions - Free Printable

Let’s go through each reaction one by one and figure out what type it is. We’ll use the definitions:

- Synthesis: Two or more things combine to make ONE new thing. (A + B → AB)
- Decomposition: ONE thing breaks apart into two or more things. (AB → A + B)
- Single Displacement: One element kicks another out of a compound. (AB + C → AC + B)
- Double Displacement: Two compounds swap partners. (AB + CD → AD + CB)

Now let’s match each number:

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1. AB + C → AC + B
→ C replaced B in AB → Single displacement

2. AB + CD → AD + CB
→ A paired with D, C paired with B → partners swapped → Double displacement

3. AB → A + B
→ One thing broke into two → Decomposition

4. A + B → AB
→ Two things combined into one → Synthesis

5. 🟠🔵 → 🟠 + 🔵
→ One molecule broke into two atoms → Decomposition

6. 🟠 + 🟢🔴 → 🟠🔴 + 🟢🔵
→ Partners swapped: orange was with blue, now with red; green was with red, now with blue → Double displacement

7. 🟠 + 🟢🔴 → 🟠🔴 +
→ Orange kicked out green from green-red → Single displacement

8. 🟠 + 🟢 → 🟠🟢
→ Two atoms combined → Synthesis

9. CaCO₃ → CaO + CO₂
→ One compound broke into two → Decomposition

10. NaCl + AgNO₃ → NaNO₃ + AgCl
→ Sodium swapped with silver → Double displacement

11. Zn + 2HCl → ZnCl₂ + H₂
→ Zinc kicked hydrogen out of HCl → Single displacement

12. Na(s) + Cl₂(g) → 2NaCl(s)
→ Two elements combined → Synthesis

13. HCl + NaOH → NaCl + H₂O
→ Acid + base → salt + water → classic double displacement → Double displacement

14. 2H₂O → 2H₂ + O₂
→ Water broke into hydrogen and oxygen → Decomposition

15. Zn(s) + CuSO₄(aq) → ZnSO₄(aq) + Cu(s)
→ Zinc kicked copper out → Single displacement

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Final Answer:
1. Single displacement
2. Double displacement
3. Decomposition
4. Synthesis
5. Decomposition
6. Double displacement
7. Single displacement
8. Synthesis
9. Decomposition
10. Double displacement
11. Single displacement
12. Synthesis
13. Double displacement
14. Decomposition
15. Single displacement