Types of Chemical Reactions

1. Types of Chemical Reactions 11.2

2. Do Now – Check homework with neighbor. Compare answers and grade their effort 1-10 • Objective – Types of Chemical Reactions • Homework – Pg 339 # 24 - 27

3. 5 Types of Chemical Reactions Combination Reaction Decomposition Reaction Single-Replacement Reaction Double-Replacement Reaction Combustion Reaction

4. Combination Reaction A + B → AB (notice this is only a skeleton equation) K + Cl2 → KCl Balance it __K + __Cl2 → __KCl

5. Combination Reaction A + B → AB (notice this is only a skeleton equation) K + Cl2 → KCl Balance it 2K + Cl2 → 2KCl

6. Decomposition Reaction AB → A + B (skeleton) Mg0 → Mg + O2 __Mg0 → __Mg + __O2

7. Decomposition Reaction AB → A + B (skeleton) Mg0 → Mg + O2 2Mg0 → 2Mg + O2 * Something is broken apart

8. Single-Replacement Reaction A + BC → AC + B 2K + 2H2O → 2KOH + H2

9. Single-Replacement Reaction Zn + Cu(NO3)2 →

10. Single-Replacement Reaction Zn + Cu(NO3)2 → Compare Zn and Cu for reactivity A more reactive element will replace a less reactive element

11. Single-Replacement Reaction Zn + Cu(NO3)2 → Cu + Zn(NO3)2

12. Write and Balance the Skeleton Equation CaBr2 AgNO3 Calcium Bromide reacts with Silver Nitrate to yield Silver Bromide and Calcium Nitrate.

13. Write and Balance the Skeleton Equation CaBr2 AgNO3 Calcium Bromide reacts with Silver Nitrate to yield Silver Bromide and Calcium Nitrate. CaBr2 + AgNO3 → AgBr + Ca(NO3)2

14. Write and Balance the Skeleton Equation CaBr2 AgNO3 Calcium Bromide reacts with Silver Nitrate to yield Silver Bromide and Calcium Nitrate. CaBr2 + 2AgNO3 → 2AgBr + Ca(NO3)2

15. Double-Replacement reactions A+B- + C+D- → A+D- + C+B-(Cations and Anions) K2CO3 + BaCl2 → 2KCl + BaCO3 *The two anions switch places *A precipitate is often formed

16. Combustion reaction A + 02 →AO 2Mg + 02 → 2MgO Something + O2 → CO2 + H2O 0xygen carbon dioxide water * O2 is always a reactant * CO2 + H2O are often products