1. Chemical Reaction parts are mixed together to make something new

2. Types of Reactions 1.Synthesis reactions 2.Decomposition reactions 3.Single displacement reactions 4.Double displacement reactions You need to be able to identify each type.

3. 1. Synthesis Example C + O 2 OO C +  OO C General: A + B  AB

4. Ex. Synthesis Reaction

5. Synthesis Predict the products. Na (s) + Cl 2(g)  Mg (s) + F 2(g)  Al (s) + F 2(g)  NaCl (s) MgF 2(s) AlF 3(s) 2 2 232 Synthesis = join together

6. 2. Decomposition Example: NaCl General: AB  A + B  Cl Na Cl + Na

7. Ex. Decomposition Reaction

8. Decomposition Predict the products. HgO  2KClO 3  Hg 2 + O 2 2KCl + 3O 2 2 Decomposition = split apart

9. 3. Single Displacement Example: Zn + CuCl 2  Zn Cl Cu + General: AB + C  AC + B Cl Zn Cu +

10. Ex. Single Replacement Reaction

11. Single Replacement Reactions Predict the products. Cl 2 + 2NaBr  2NaCl + Br 2 A AB BC C 2HgO + Cl 2  2HgCl + O 2

12. 4. Double displacement Example: MgO + CaS General:AB + CD  AD + CB S O  Mg Ca + O S Mg Ca +

13. Single Replacement Reactions Predict the products. CuCl 2 + H 2 S  CuS + 2HCl BaCl 2 + Na 2 SO 4  2NaCl + BaSO 4

14. join together A + B  AB split apart AB  A + B trade 1 place AB + C  AC + B trade 2 places AB + CD  AC + BD

15. Which type of reaction? 4 P + 5 O 2  P 4 O 10

16. Which type of reaction? Cl 2 + 2NaBr  2NaCl + O 2

17. Which type of reaction? BaCl 2 + Na 2 SO 4  2NaCl + BaSO 4

18. Which type of reaction? 2 HgO + Cl 2  2HgCl + O 2

19. Which type of reaction? 2 Al 2 O 3  4 Al + 3 O 2

20. Which type of reaction? CuCl 2 + H 2 S  CuS + 2HCl

21. Which type of reaction? 3 H 2 + N 2  2 NH 3

22. Which type of reaction? 2 HgO  2Hg + O 2