1. Types of Chemical Reactions
11.2

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

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

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

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