1. Warm Up Balance the following reactions: 1.__NaCl + __BeF 2 --> __NaF + __BeCl 2 2. __FeCl 3 + __Be 3 (PO 4 ) 2 --> __BeCl 2 + __FePO 4

2. Warm Up Balance the following reactions: 1._2_NaCl + __BeF 2 --> _2_NaF + __BeCl 2 2. 2_FeCl 3 + _Be 3 (PO 4 ) 2 --> _3BeCl 2 + _2FePO 4

3. Types Of Chemical Reactions 8.2

4. Combination Reactions A + B  AB Examples: S + O 2  SO 2 CaO + H 2 O → Ca(OH) 2

5. Decomposition Reactions AB  A + B Examples 2H 2 O(I) → 2H 2 + O 2 2Cl 2 O 5 (g) → 2Cl 2 (g) + 5O 2 (g)

6. Single Replacement Reaction A + BC → AC + B Example: Cu + 2AgNO 3 → 2Ag + Cu(NO 3 ) 2 Br 2 + 2KI → 2KBr + I 2

7. Double Replacement Reactions AX + BY → BX + AY Example: HCl (aq) + NaOH (aq) → NaCl (aq) + H 2 O (l)

8. Combustion Reaction An element or compound reacts with an oxidizing element, such as oxygen. Probable products are CO 2 and H 2 O Examples: CH 4 + 2 O 2 → CO 2 + 2 H 2 O + energy 2 H 2 + O 2 → 2 H 2 O(g) + heat

9. Rules for Predicting Products R+ S  RS RS  R + S T + RS  TS + R R + S - + T + U -  R + U - + T + S - C x H y + (x+y/4) O 2  x CO 2 + (y/2) H2O

10. Reminders Make sure that you look at what might be formed and consider its state when predicting products Metals - form solids when on their own and in combination with nonmetals you must balance ionic charges Mg compared to MgCl 2 Don’t forget that some non-metals will be anions in combination with metals, but covalent diatomic gasses when they are on their “own” Cl 2 compared to HCl

11. Complete the following equations: Decomposition NCl 3  Single Replacement Al + CuSO 4  Mg + HCl  Double Replacement Ba(NO 3 ) 2 + Na 2 SO 4  *** Hint Nitrogen and Chlorine are diatomic gasses on their own ** *** Hint: Look at the ions you are working with!!!***

12. Complete the following equations: Decomposition NCl 3  N 2 + Cl 2 Single Replacement Al + CuSO 4  Mg + HCl  Double Replacement Ba(NO 3 ) 2 + Na 2 SO 4 

13. Complete the following equations: Decomposition NCl 3  N 2 + Cl 2 Single Replacement Al + CuSO 4  Al 2 (SO 4 ) 3 + Cu Mg + HCl  Double Replacement Ba(NO 3 ) 2 + Na 2 SO 4 

14. Complete the following equations: Decomposition NCl 3  N 2 + Cl 2 Single Replacement Al + CuSO 4  Al 2 (SO 4 ) 3 + Cu Mg + HCl  H 2 + MgCl 2 Double Replacement Ba(NO 3 ) 2 + Na 2 SO 4 

15. Complete the following equations: Decomposition NCl 3  N 2 + Cl 2 Single Replacement Al + CuSO 4  Al 2 (SO 4 ) 3 + Cu Mg + HCl  H 2 + MgCl 2 Double Replacement Ba(NO 3 ) 2 + Na 2 SO 4  BaSO 4 + NaNO 3

16. The End Start Working on HW if time permits