1. Day 4 9-17 Sulfuric acid and sodium hydroxide react to produce sodium sulfate and water. Write the balanced chem. equation

2. Day 4 9-17 1. How do I use an equation to represent a chemical reaction? 2. How do I classify different types of rxns.?

3. Day 3 9-14

4. Types of Chemical EquationsSingle-Replacement Reactions Single-replacement reaction OR displacement reaction – one element replaces a similar element in a compound. A + BX AX + B A, B, X, and Y = eles.; AX, BX, and BY = cmpds. Example: Fe(s) + CuSO 4 (aq) FeSO 4 (aq) + Cu(s) A BX AX B Y + BX BY + X

5. Types of Chemical EquationsSingle-replacement Reactions Examples: - a metal with another metal - H in water with a metal - H in an acid with a metal - Halogens ***

6. Types of Chemical EquationsSingle-replacement Reactions

7. Types of Chemical EquationsDouble-replacement Reactions Double-replacement reactions – the ions of 2 cmpds. exchange places in an aqueous sltn. to form 2 new cmpds. AX + BY AY + BX A, B, X, and Y = ions Example: 2KI(aq) + Pb(NO 3 ) 2 (aq) PbI 2 (s) + 2KNO 3 (aq) AX BY BX AY +-+-+ - + -

8. Types of Chemical EquationsDouble-replacement Reactions In the margin: double reps. can form precipitates most acid-base reactions

9. What type of reaction is: AX + BY → AY + BX compound

10. What type of reaction is: X + BY → Y + BX element compound element compound

11. What type of reaction is: X + BY → BYX element compound

12. What type of reaction is: X + Y → XY element compound

13. What type of reaction is: BY → Y + B compound element

14. H 2(g) + F 2(g)  2HF (g) What type of reaction is:

15. NaBr + Cl 2 NaCl + Br 2 2

16. 2KI + Pb(NO 3 ) 2  PbI 2 + 2KNO 3 What type of reaction is:

17. 2H 2 O(l) 2H 2 (g) + O 2 (g) electricity

18. What type of reaction requires aqueous reactants? What type of reaction requires addition of heat and/or electricity? Describe some examples?

19. Types of Chemical EquationsCombustion Reactions Combustion reactions – a substance combines with oxygen, releasing a large amount of energy (light or heat) Unique equations Examples: Hydrogen gas: 2H 2 (g) + O 2 (g) 2H 2 O(g) Propane: C 3 H 8 (g) + 5O 2 (g) 3CO 2 (g) + 4H 2 O(g)